FireWalletPlugins/signature-checker.py

import json
import account
import requests

# Plugin Data
info = {
    "name": "Check signatures",
    "description": "Validate signatures",
    "version": "1.0",
    "author": "Nathan.Woodburn/"
}

# Functions
functions = {
    "validate":{
        "name": "Validate signature",
        "type": "default",
        "description": "Validate that a message was signed by a specific domain",
        "params": {
            "domain": {
                "name": "Signing domain",
                "type": "text",
            },
            "message": {
                "name": "Message",
                "type": "text",
            },
            "signature": {
                "name": "Signature",
                "type": "text",
            }
        },
        "returns": {
            "status": 
            {
                "name": "Validity of the signature",
                "type": "text"
            }
        }
    },
    "advancedValidate":{
        "name": "Validate signature from json",
        "type": "default",
        "description": "Validate that a message was signed by a specific domain using json format",
        "params": {
            "json": {
                "name": "JSON signature object",
                "type": "longText",
            }
        },
        "returns": {
            "status": 
            {
                "name": "Validity of the signature",
                "type": "text"
            }
        }
    }
}

def validate(params, authentication):
    domain = params["domain"]
    message = params["message"]
    signature = params["signature"]
    
    if account.verifyMessageWithName(domain, signature,message):
        return {"status": "Valid"}
    return {"status": "Invalid signature"}

def advancedValidate(params, authentication):
    data = params["json"]

    try:
        data = json.loads(data)
    except:
        return {"status": "Invalid JSON"}

    if "domain" in data and "message" in data and "signature" in data:
        domain = data["domain"]
        message = data["message"]
        signature = data["signature"]
        
        if account.verifyMessageWithName(domain, signature,message):
            return {"status": "Valid"}
        return {"status": "Invalid signature"}
    return {"status": "Invalid JSON"}