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| author | B. Stack <bgstack15@gmail.com> | 2022-11-29 16:09:22 -0500 |
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| committer | B. Stack <bgstack15@gmail.com> | 2022-11-29 16:09:22 -0500 |
| commit | 4a8ce7e2862b338a7f8e34d016a3119290239b0b (patch) | |
| tree | 951ad8a52ddf31e489e4fab7c0d0c96947d6b0f4 /outbound.py | |
| download | outbound-master.tar.gz outbound-master.tar.bz2 outbound-master.zip | |
Diffstat (limited to 'outbound.py')
| -rw-r--r-- | outbound.py | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/outbound.py b/outbound.py new file mode 100644 index 0000000..34f114e --- /dev/null +++ b/outbound.py @@ -0,0 +1,104 @@ +#!/usr/bin/env python3 +# File: outbound.py +# Location: https://bgstack15.ddns.net/cgit/outbound/ +# Author: bgstack15 +# Startdate: 2022-11-28-2 16:34 +# SPDX-License-Identifier: GPL-3.0 +# Title: Outbound flask web app +# Project: outbound +# Purpose: allow web server to log outbound links, by using a link underneath this webapp entry point +# History: +# Usage: See README +# References: +# fuss.py, coupons.py +# https://werkzeug.palletsprojects.com/en/2.2.x/serving/#werkzeug.serving.run_simple +# Improve: +# ensure it works under an arbitrary top-level path like "/outbound/" +# add domain and port globbing in WHITELIST +# Dependencies: +# python3-flask +# Documentation: See README + +from flask import Flask, request, redirect, abort +from urllib.parse import urlparse +import sys, os, re +# Load app from same directory as this file.py +#sys.path.append(os.path.dirname(os.path.abspath(__file__))) +from urllib import parse + +app = Flask(__name__) +try: + app.config.from_pyfile(os.environ["OUTBOUND_CONF"], silent=False) +except: + try: + app.config.from_pyfile("/etc/outbound.conf") + except: + try: + # from working directory + app.config.from_pyfile("outbound.conf") + except: + try: + # from same directory + app.config.from_pyfile(os.path.join(os.path.dirname(os.path.realpath(__file__)),"outbound.conf")) + except: + # defaults + print(f"WARNING: Using default configs because could not find OUTBOUND_CONF, or /etc/outbound.conf, or ./outbound.conf!") + app.config.update( + WHITELIST = ["localhost"], + DEBUG = False, + ALLOW_DEBUG = False + ) +if "WSGI_LOGGING" in app.config: + dictConfig(app.config["WSGI_LOGGING"]) + +# satisfies mod_wsgi: +application = app + +@app.route("/<path:url>", methods=["GET"]) +def root(url = ""): + referer = None + allow_debug = app.config["ALLOW_DEBUG"] + _debug = app.config["DEBUG"] + try: + #print(dict(request.headers)) + for item in dict(request.headers): + #print(f"Item: {item}, {request.headers.get('item')}") + #print(f"Evaluating item {item}") + if item.lower() in ["debug"]: + #print(f"DEBUG header: {request.headers.get(item).lower()}") + if request.headers.get(item).lower() in ["true","yes","on","1"]: + #print(f"{item}: {request.headers.get(item)}") + if allow_debug: + _debug = True + except: + pass + bad_referer = False + try: + referer = request.referrer + domain = urlparse(referer).netloc + if _debug: + print(f"Referer: {referer}, domain {domain}") + # TODO: allow wildcard/globbing + if domain in app.config["WHITELIST"]: + # Main logic to redirect to/print url. + # need to fix the webserver->flask collapse of the parameter string http:// down to http:/ + new_url = re.sub("(((ht|f)tps?|gemini):)\/+","\\1//",url) + if _debug and allow_debug: + return f"redirect to {new_url}\n",307 + else: + return redirect(new_url, 307) + else: + #print("Bad referer 1") + bad_referer = True + except: + #print("Bad referer 2") + bad_referer = True + if bad_referer: + if _debug and allow_debug: + return f"<html>Invalid referer: {referer}</html>\n",404 + else: + abort(404) + return "OK", 200 + +if __name__ == "__main__": + app.run() |