debug-tools/server.py

from functools import cache
import json
from flask import (
    Flask,
    make_response,
    redirect,
    request,
    jsonify,
    render_template,
    send_from_directory,
    send_file,
)
import os
import json
import requests
from datetime import datetime
import dotenv
import re
import tools
import urllib.parse

dotenv.load_dotenv()

app = Flask(__name__)


BLOCKED_PATHS = ["https.js"]

def find(name, path):
    for root, dirs, files in os.walk(path):
        if name in files:
            return os.path.join(root, name)

# Assets routes
@app.route("/assets/<path:path>")
def send_assets(path):
    if path.endswith(".json"):
        return send_from_directory(
            "templates/assets", path, mimetype="application/json"
        )

    if os.path.isfile("templates/assets/" + path):
        return send_from_directory("templates/assets", path)

    # Try looking in one of the directories
    filename: str = path.split("/")[-1]
    if (
        filename.endswith(".png")
        or filename.endswith(".jpg")
        or filename.endswith(".jpeg")
        or filename.endswith(".svg")
    ):
        if os.path.isfile("templates/assets/img/" + filename):
            return send_from_directory("templates/assets/img", filename)
        if os.path.isfile("templates/assets/img/favicon/" + filename):
            return send_from_directory("templates/assets/img/favicon", filename)

    return render_template("404.html"), 404


# region Special routes
@app.route("/favicon.png")
def faviconPNG():
    return send_from_directory("templates/assets/img", "favicon.png")


@app.route("/.well-known/<path:path>")
def wellknown(path):
    # Try to proxy to https://nathan.woodburn.au/.well-known/
    req = requests.get(f"https://nathan.woodburn.au/.well-known/{path}")
    return make_response(
        req.content, 200, {"Content-Type": req.headers["Content-Type"]}
    )


# endregion


# region Main routes
@app.route("/")
def index():
    return render_template("index.html")

@app.route("/proxy/<path:url>")
def proxy(url: str):
    # Decode the URL
    url = urllib.parse.unquote(url)
    # Get last path segment
    path = url.split("/")[-1]
    if path in BLOCKED_PATHS:
        return render_template("404.html"), 403



    content: requests.Response = tools.proxy(url)
    if not content.status_code < 500:
        print(content.text)
        return render_template("500.html"), 500   
    
    # Get the content type
    contentType = content.headers.get("Content-Type")
    if "text/html" in contentType:
        response = make_response(tools.cleanProxyContent(content.text,url,request.host_url))
        response.headers["Content-Type"] = contentType
        return response, content.status_code
    
    # Clean JS
    if "text/javascript" in contentType or 'application/javascript' in contentType:
        response = make_response(tools.proxyCleanJS(content.text,url,request.host_url))
        response.headers["Content-Type"] = contentType
        return response, content.status_code

    response = make_response(content.content)
    response.headers["Content-Type"] = contentType
    return response, content.status_code


@app.route("/<path:path>")
def catch_all(path: str):
    if os.path.isfile("templates/" + path):
        return render_template(path)

    # Try with .html
    if os.path.isfile("templates/" + path + ".html"):
        return render_template(path + ".html")

    if os.path.isfile("templates/" + path.strip("/") + ".html"):
        return render_template(path.strip("/") + ".html")

    # Try to find a file matching
    if path.count("/") < 1:
        # Try to find a file matching
        filename = find(path, "templates")
        if filename:
            return send_file(filename)

    return render_template("404.html"), 404


# endregion

#region API routes
@app.route("/api/v1/ssl/<domain>")
def api_ssl(domain: str):
    regexmatch = re.match(r"^([a-z0-9]+(-[a-z0-9]+)*\.)*([a-z0-9]+([-a-z0-9])*)$", domain)
    if not regexmatch:
        return api_error("Please provide a valid domain to check")
    result = tools.check_ssl(domain)
    return jsonify(result)
    
@app.route("/api/v1/curl/<path:url>")
def api_curl(url: str):
    # Decode the URL
    url = urllib.parse.unquote(url)

    result = tools.curl(url)
    return jsonify(result)

# endregion

# region Error Catching
# 404 catch all
@app.errorhandler(404)
def not_found(e):
    return render_template("404.html"), 404

def api_error(e):
    return jsonify({"success": False, "message": str(e)})

# endregion
if __name__ == "__main__":
    app.run(debug=True, port=5000, host="0.0.0.0")