Remove a few leftover lines

This makes it easier to add new features
- Clearer variable names
- Split up large functions into smaller ones for each action
- Help make it easier to add new features

.github/README.md

@@ -1,7 +0,0 @@
-# imgupload
-
-## Moving from GitHub to Gitea
-
-**TL;DR: Please go to my Gitea instance instead of GitHub for anything related to imgupload. [https://git.bbaovanc.com/bbaovanc/imgupload](https://git.bbaovanc.com/bbaovanc/imgupload)**
-
-This repository might not exist on GitHub in the future! Releases will not be released here in the future. Instead, they will be released on the repository on my Gitea instance, which you can find [here](https://git.bbaovanc.com/bbaovanc/imgupload). Issues and pull requests should also be created on Gitea. For now, commits will still be pushed to this repository, but that may change in the future.

.gitignore

@@ -1,8 +1,3 @@
-
-# Created by https://www.toptal.com/developers/gitignore/api/visualstudiocode,python
-# Edit at https://www.toptal.com/developers/gitignore?templates=visualstudiocode,python
-
-### Python ###
 # Byte-compiled / optimized / DLL files
 __pycache__/
 *.py[cod]
@@ -55,7 +50,6 @@ coverage.xml
 *.py,cover
 .hypothesis/
 .pytest_cache/
-pytestdebug.log
 
 # Translations
 *.mo
@@ -76,7 +70,6 @@ instance/
 
 # Sphinx documentation
 docs/_build/
-doc/_build/
 
 # PyBuilder
 target/
@@ -116,7 +109,6 @@ venv/
 ENV/
 env.bak/
 venv.bak/
-pythonenv*
 
 # Spyder project settings
 .spyderproject
@@ -136,28 +128,10 @@ dmypy.json
 # Pyre type checker
 .pyre/
 
-# pytype static type analyzer
-.pytype/
-
-# profiling data
-.prof
-
-### VisualStudioCode ###
-.vscode/*
-!.vscode/tasks.json
-!.vscode/launch.json
-*.code-workspace
-
-### VisualStudioCode Patch ###
-# Ignore all local history of files
-.history
-.ionide
-
-# End of https://www.toptal.com/developers/gitignore/api/visualstudiocode,python
-
 # imgupload custom
 uploadkeys
 savelog.log
 uwsgi.log
 settings.py
 functions.py
+secret.key

README.md

@@ -1,88 +1,26 @@
 # imgupload
+![CodeFactor Grade](https://img.shields.io/codefactor/grade/github/BBaoVanC/imgupload/master?color=purple) ![GitHub repo size](https://img.shields.io/github/repo-size/bbaovanc/imgupload?color=purple) ![GitHub All Releases](https://img.shields.io/github/downloads/bbaovanc/imgupload/total?color=purple) ![GitHub issues](https://img.shields.io/github/issues/bbaovanc/imgupload?color=purple) ![GitHub closed issues](https://img.shields.io/github/issues-closed/bbaovanc/imgupload?color=purple) ![GitHub](https://img.shields.io/github/license/bbaovanc/imgupload?color=purple)
 
-<!---![CodeFactor Grade](https://img.shields.io/codefactor/grade/github/BBaoVanC/imgupload/master?color=purple)
+### What is imgupload?
-![GitHub repo size](https://img.shields.io/github/repo-size/bbaovanc/imgupload?color=purple)
-![GitHub All Releases](https://img.shields.io/github/downloads/bbaovanc/imgupload/total?color=purple)
-![GitHub issues](https://img.shields.io/github/issues/bbaovanc/imgupload?color=purple)
-![GitHub closed issues](https://img.shields.io/github/issues-closed/bbaovanc/imgupload?color=purple)
-![GitHub](https://img.shields.io/github/license/bbaovanc/imgupload?color=purple)-->
-
-## What is imgupload?
-
 imgupload is a Flask + uWSGI application to serve as an all-purpose image/file uploader over POST requests.
 
----
+### Installation
-
+1. Clone the repository: `git clone https://github.com/BBaoVanC/imgupload.git`
-## FAQ
+2. Enter the imgupload directory: `cd imgupload`
-
+3. Create a virtualenv: `python3 -m venv env`
-**Where can I send bug reports and feature requests?**
+4. Enter the virtualenv: `source env/bin/activate`
-
+5. Install dependencies: `python3 -m pip install -r requirements.txt`
-You can create an issue [here](https://git.bbaovanc.com/bbaovanc/imgupload/issues).
+6. Run the Flask app
-
-**How do I use this program?**
-
-See [Installation](#installation)
-
-**I want to make a pull request. Where should I do that?**
-
-First, fork [this repository](https://git.bbaovanc.com/bbaovanc/imgupload). If you don't have an account on my Gitea site yet, you can either create one, or sign in using your GitHub account. Commit your changes to your fork, and then create a pull request.
-
----
-
-## Installation
 
+## Running the Flask app
 ### Using uWSGI
+[https://uwsgi-docs.readthedocs.io/en/latest/Configuration.html](https://uwsgi-docs.readthedocs.io/en/latest/Configuration.html)
 
-Note: replace `www-data` with whatever user your webserver runs as.
+Instructions specific to imgupload are coming soon
-
-1. Go to /srv: `cd /srv`
-2. Clone the repository: `git clone https://git.bbaovanc.com/bbaovanc/imgupload.git`
-3. Change ownership of /srv/imgupload: `sudo chown www-data:www-data /srv/imgupload`
-4. Enter www-data user: `sudo su www-data`
-5. Change directories to /srv/imgupload: `cd /srv/imgupload`
-6. Checkout the version you want (replace [version] with desired version tag: `git checkout [version]`
-7. Enter the imgupload directory: `cd imgupload`
-8. Create a virtualenv: `python3 -m venv env`
-9. Enter the virtualenv: `source env/bin/activate`
-10. Install dependencies: `python3 -m pip install -r requirements.txt`
-11. Leave the www-data user: `exit`
-12. Copy the default uWSGI configuration: `sudo cp /srv/imgupload/uwsgi.ini.default /etc/uwsgi/apps-available/imgupload.ini`
-13. Modify `/etc/uwsgi/apps-available/imgupload.ini` to your preferences
-14. Enable imgupload: `sudo ln -s /etc/uwsgi/apps-available/imgupload.ini /etc/uwsgi/apps-enabled/`
-15. Restart uWSGI: `sudo systemctl restart uwsgi`
-16. Set up your webserver to proxy the uwsgi.sock
-
-Example NGINX location block:
-
-```nginx
-location /upload {
-    include uwsgi_params;
-    uwsgi_pass unix:/srv/imgupload/uwsgi.sock;
-    client_max_body_size 25M;
-}
-```
 
 ### Using Flask development server
-
-#### Setup
-
 ```shell
-git clone https://git.bbaovanc.com/bbaovanc/imgupload.git
+$ source env/bin/activate  # if you haven't already entered the virtualenv
-cd imgupload
+$ export FLASK_APP=imgupload.py
-python3 -m venv env
+$ flask run
-source env/bin/activate
-pip3 install -r requirements.txt
 ```
-
-#### Run
-
-```shell
-export FLASK_APP=imgupload.py
-flask run
-```
-
----
-
-## License
-
-_imgupload_ is licensed under the GPLv3 license. For more information, please refer to [`LICENSE`](https://git.bbaovanc.com/bbaovanc/imgupload/src/branch/master/LICENSE)

configtest.py

@@ -1,10 +1,3 @@
-#!/usr/bin/env python3
-"""
-configtest.py
-
-Tests the validity of your configuration in settings.py.
-"""
-
 import os
 import settings as settings
 
@@ -17,6 +10,7 @@ defaults = {
     "SAVELOG": "savelog.log",
     "SAVELOG_CHMOD": "0o644",
     "SAVELOG_KEYPREFIX": 4,
+    "ENCKEY_PATH": "secret.key"
 }
 
 deftypes = {
@@ -26,6 +20,7 @@ deftypes = {
     "SAVELOG": str,
     "SAVELOG_CHMOD": int,
     "SAVELOG_KEYPREFIX": int,
+    "ENCKEY_PATH": str,
 }
 
 
@@ -35,7 +30,7 @@ unset_settings = [i for i in defaults.keys() if i not in dir(settings)]
 if len(unset_settings) > 0:
     for unset in unset_settings:
         checksettings.remove(unset)
-        print(f"[!] {unset} is unset. The default value is type {deftypes[unset].__name__} with value {defaults[unset]}")
+        print("[!] {0} is unset. The default value is type {1} with value {2}".format(unset, deftypes[unset].__name__, defaults[unset]))
 else:
     print("[" + u"\u2713" + "] Found all required settings!")
 
@@ -45,7 +40,7 @@ typesgood = True
 typeswrong = []
 for testtype in checksettings:
     if type(getattr(settings, testtype)) is not deftypes[testtype]:
-        print(f"[!] {testtype} requires {deftypes[testtype].__name__}, but is {type(getattr(settings, testtype)).__name__}")
+        print("[!] {0} requires {1}, but is {2}".format(testtype, deftypes[testtype].__name__, type(getattr(settings, testtype)).__name__))
         typeswrong.append(testtype)
         typesgood = False
 
@@ -63,7 +58,7 @@ if "ALLOWED_EXTENSIONS" in checksettings:
     if len(invalid_exts) > 0:
         print("[!] The following extensions listed in ALLOWED_EXTENSIONS are invalid:")
         for e in invalid_exts:
-            print(f"    {e} is listed in ALLOWED_EXTENSIONS, but doesn't start with a .")
+            print("    {0} is listed in ALLOWED_EXTENSIONS, but doesn't start with a .".format(e))
     else:
         print("[" + u"\u2713" + "] ALLOWED_EXTENSIONS is good!")
 
@@ -73,7 +68,7 @@ uploadfolder_exists = True
 if "UPLOAD_FOLDER" in checksettings:
     if not os.path.isdir(settings.UPLOAD_FOLDER):
         uploadfolder_exists = False
-        print(f"[!] The directory set in UPLOAD_FOLDER ('{settings.UPLOAD_FOLDER}') doesn't exist!")
+        print("[!] The directory set in UPLOAD_FOLDER ('{0}') doesn't exist!".format(settings.UPLOAD_FOLDER))
     else:
         print("[" + u"\u2713" + "] UPLOAD_FOLDER exists!")
 
@@ -85,6 +80,8 @@ if "ROOTURL" in checksettings:
         pass
     else:
         rooturl_good = False
+        print(settings.ROOTURL)
+        print(settings.ROOTURL.startswith("https://"))
         print("[!] ROOTURL does not start with `http://` or `https://`! This may cause issues!")
     if not settings.ROOTURL.endswith("/"):
         rooturl_good = False
@@ -92,14 +89,24 @@ if "ROOTURL" in checksettings:
 
     if not rooturl_good:
         print("    With your current settings, this is what a generated url would look like:")
-        print(f"    {settings.ROOTURL}example.png")
+        print("    {0}example.png".format(settings.ROOTURL))
     else:
         print("[" + u"\u2713" + "] ROOTURL is good!")
 
 
+# Check if ENCKEY_PATH exists
+enckey_exists = True
+if "ENCKEY_PATH" in checksettings:
+    if not os.path.isfile(settings.ENCKEY_PATH):
+        enckey_exists = False
+        print("[!] The path set in ENCKEY_PATH ('{0}') doesn't exist!".format(settings.ENCKEY_PATH))
+    else:
+        print("[" + u"\u2713" + "] ENCKEY_PATH exists!")
+
+
 # Ask the user if SAVELOG is the intended filename
 if "SAVELOG" in checksettings:
-    print(f"[*] SAVELOG was interpreted to be {settings.SAVELOG}")
+    print("[*] SAVELOG was interpreted to be {0}".format(settings.SAVELOG))
     print("[*] If this is not the intended filename, please fix it.")
 
 
@@ -111,32 +118,36 @@ if len(unset_settings) > 0:
     summarygood = False
     print("Unset settings:")
     for unset in unset_settings:
-        print(f"    {unset}")
+        print("    {0}".format(unset))
 
 if len(typeswrong) > 0:
     summarygood = False
     print("Incorrect types:")
     for wtype in typeswrong:
-        print(f"    {wtype}")
+        print("    {0}".format(wtype))
 
 if len(invalid_exts) > 0:
     summarygood = False
     print("Invalid extensions:")
     for wext in invalid_exts:
-        print(f"    '{wext}'")
+        print("    '{0}'".format(wext))
 
 if not uploadfolder_exists:
     summarygood = False
-    print(f"UPLOAD_FOLDER ({settings.UPLOAD_FOLDER}) does not exist!")
+    print("UPLOAD_FOLDER ({0}) does not exist!".format(settings.UPLOAD_FOLDER))
+
+if not enckey_exists:
+    summarygood = False
+    print("ENCKEY_PATH ({0}) does not exist!".format(settings.ENCKEY_PATH))
 
 if not rooturl_good:
     summarygood = False
     print("ROOTURL may cause issues!")
     print("With current settings, this is what a generated URL would look like:")
-    print(f"{settings.ROOTURL}example.png")
+    print("{0}example.png".format(settings.ROOTURL))
 
 if "SAVELOG" in checksettings:
-    print(f"[*] SAVELOG is {settings.SAVELOG}")
+    print("[*] SAVELOG is {0}".format(settings.SAVELOG))
 
 if summarygood:
     print("[" + u"\u2713" + "] This configuration passes all tests!")

functions.py.default

@@ -1,10 +1,3 @@
-#!/usr/bin/env python3
-"""
-functions.py
-
-Functions used by imgupload which can be easily customized.
-"""
-
 import string
 import random
 

imgupload.py

@@ -1,16 +1,10 @@
-#!/usr/bin/env python3
+from flask import Flask, request, jsonify, abort, Response
-"""
+from cryptography.fernet import Fernet
-imgupload.py
-
-Flask application for processing images uploaded through POST requests.
-"""
-
-from flask import Flask, request, jsonify
 from flask_api import status
 from pathlib import Path
+import random
 import os
 import datetime
-from PIL import Image
 
 import settings  # app settings (such as allowed extensions)
 import functions  # custom functions
@@ -19,7 +13,7 @@ app = Flask(__name__)  # app is the app
 
 
 def allowed_extension(testext):
-    if testext.lower() in settings.ALLOWED_EXTENSIONS:
+    if testext in settings.ALLOWED_EXTENSIONS:
         return True
     else:
         return False
@@ -28,11 +22,11 @@ def allowed_extension(testext):
 def log_savelog(key, ip, savedname):
     if settings.SAVELOG_KEYPREFIX > 0:
         with open(settings.SAVELOG, "a+") as slogf:
-            slogf.write(f"[{datetime.datetime.now()}] {key[:settings.SAVELOG_KEYPREFIX]}: {ip} - {savedname}\n")
+            slogf.write("[{0}] {1}: {2} - {3}\n".format(datetime.datetime.now(), key[:settings.SAVELOG_KEYPREFIX], ip, savedname))
         os.chmod(settings.SAVELOG, settings.SAVELOG_CHMOD)
     else:
         with open(settings.SAVELOG, "a+") as slogf:
-            slogf.write(f"[{datetime.datetime.now()}] {ip} - {savedname}\n")
+            slogf.write("[{0}] {1} - {2}\n".format(datetime.datetime.now(), ip, savedname))
         os.chmod(settings.SAVELOG, settings.SAVELOG_CHMOD)
 
 @app.route("/upload", methods = ["POST"])
@@ -40,22 +34,24 @@ def upload():
     if request.method == "POST":  # sanity check: make sure it's a POST request
         print("Request method was POST!")
 
-        with open("uploadkeys", "r") as keyfile:  # load valid keys
+        with open(settings.ENCKEY_PATH,"rb") as enckey: # load encryption key
-            validkeys = keyfile.readlines()
+            key = enckey.read()
-        validkeys = [x.strip("\n") for x in validkeys]
+        f = Fernet(key)
+
+        with open("uploadkeys", "rb") as keyfile:
+            encrypted_data = keyfile.read()
+        decrypted_data = str(f.decrypt(encrypted_data).decode('utf-8'))
+        decrypted_data = decrypted_data.splitlines()
+
+        validkeys = [x.strip("\n") for x in decrypted_data]
         while "" in validkeys:
             validkeys.remove("")
+            print("Removed blank key(s)")
         print("Loaded validkeys")
-
         if "uploadKey" in request.form:  # if an uploadKey was provided
             if request.form["uploadKey"] in validkeys:  # check if uploadKey is valid
                 print("Key is valid!")
 
-                if "verify" in request.form.keys():
-                    if request.form["verify"] == "true":
-                        print("Request is asking if key is valid (it is)")
-                        return jsonify({'status': 'key_valid'})
-
                 if "imageUpload" in request.files:  # check if image to upload was provided
                     f = request.files["imageUpload"]  # f is the image to upload
                 else:
@@ -68,36 +64,14 @@ def upload():
 
                 fext = Path(f.filename).suffix  # get the uploaded extension
                 if allowed_extension(fext):  # if the extension is allowed
-                    if not "imageName" in request.form.keys():
+                    print("Generating file with extension {0}".format(fext))
-                        print(f"Generating file with extension {fext}")
                     fname = functions.generate_name() + fext  # generate file name
-                        print(f"Generated name: {fname}")
+                    print("Generated name: {0}".format(fname))
-                    else:
-                        fname = request.form["imageName"]
-                        if len(fname) > 0:
-                            print(f"Request imageName: {fname}")
-                            if not fname.lower().endswith(fext.lower()):  # if requested name doesn't have the correct extension
-                                fname += fext  # add the extension
-                                print(f"Added extension; new filename: {fname}")
-                        else:
-                            print("Requested filename is blank!")
-                            fname = functions.generate_name() + fext  # generate a valid filename
-                            print(f"Generated name: {fname}")
 
                     if f:  # if the uploaded image exists
                         print("Uploaded image exists")
-                        if Path(os.path.join(settings.UPLOAD_FOLDER, fname)).is_file():
+                        f.save(os.path.join(settings.UPLOAD_FOLDER, fname))  # save the image
-                            print("Requested filename already exists!")
+                        print("Saved to {0}".format(fname))
-                            return jsonify({'status': 'error', 'error': 'FILENAME_TAKEN'}), status.HTTP_409_CONFLICT
-
-                        f.save(f"/tmp/{fname}")  # save the image temporarily (before removing EXIF)
-                        image = Image.open(f"/tmp/{fname}")
-                        data = list(image.getdata())
-                        stripped = Image.new(image.mode, image.size)
-                        stripped.putdata(data)
-                        stripped.save(os.path.join(settings.UPLOAD_FOLDER, fname))  # save the image without EXIF
-
-                        print(f"Saved to {fname}")
                         url = settings.ROOTURL + fname  # construct the url to the image
                         if settings.SAVELOG != "/dev/null":
                             print("Saving to savelog")
@@ -110,16 +84,21 @@ def upload():
 
                 else:  # if the extension was invalid
                     print("Uploaded extension is invalid!")
-                    return jsonify({'status': 'error', 'error': 'INVALID_EXTENSION'}), status.HTTP_415_UNSUPPORTED_MEDIA_TYPE
+                    abort(415)
 
             else:  # if the key was not valid
                 print("Key is invalid!")
-                print(f"Request key: {request.form['uploadKey']}")
+                print("Request key: {0}".format(request.form["uploadKey"]))
-                return jsonify({'status': 'error', 'error': 'UNAUTHORIZED'}), status.HTTP_401_UNAUTHORIZED
+                abort(401)
 
         else:  # if uploadKey was not found in request body
             print("No uploadKey found in request!")
-            return jsonify({'status': 'error', 'error': 'UNAUTHORIZED'}), status.HTTP_401_UNAUTHORIZED
+            abort(401)
+
+
+    else:  # if the request method wasn't post
+        print("Request method was not POST!")
+        abort(405)
 
 if __name__ == "__main__":
     print("Run with `flask` or a WSGI server!")

keyctl.py

@@ -1,180 +0,0 @@
-#!/usr/bin/env python3
-"""
-keyctl.py
-
-Command-line utility for easy management of the uploadkeys file.
-"""
-
-from pathlib import Path
-import argparse
-import logging
-import secrets
-import string
-
-
-def read_keyfile():
-    with open("uploadkeys", "r") as keyfile:  # open uploadkeys
-        keys = keyfile.readlines()  # read all the keys
-        logging.debug("Read uploadkeys")
-    keys = [x.strip("\n") for x in keys]  # strip newlines from keys
-    logging.debug("Stripped newlines from keys")
-    return keys
-
-
-def genkey(length):
-    key = ''.join(secrets.choice(string.ascii_letters + string.digits) for x in range(length))
-    return key
-
-
-def savekey(key):
-    if not Path("uploadkeys").is_file():  # if uploadkeys doesn't exist, log an info message
-        logging.info("uploadkeys file doesn't exist, it will be created.")
-    with open("uploadkeys", "a+") as keyfile:
-        keyfile.write(str(key) + "\n")  # add the key
-    logging.debug(f"Saved a key to uploadkeys: {key}")
-
-
-def rmkey(delkey):
-    removedkey = False
-    allkeys = read_keyfile()
-    if delkey in allkeys:  # if the key to remove exists
-        allkeys.remove(delkey)  # remove the first instance of the key
-        removedkey = True
-        logging.debug("Removed one instance of the key")
-
-    with open("uploadkeys", "w") as keyfile:
-        for k in allkeys:
-            keyfile.write(k + "\n")  # write the remaining keys
-
-    if removedkey:
-        return True
-    else:
-        return False
-
-
-def find_duplicates():
-    allkeys = read_keyfile()
-
-    seen = set()
-    ukeys = []
-    dupkeys = []
-    for x in allkeys:
-        if x not in seen:
-            ukeys.append(x)
-            seen.add(x)
-        else:
-            dupkeys.append(x)
-    return dupkeys
-
-
-def get_keys():
-    validkeys = read_keyfile()
-    while "" in validkeys:
-        validkeys.remove("")
-    logging.debug("Removed blank keys")
-    return validkeys
-
-
-
-def cmd_list(args):
-    validkeys = get_keys()
-
-    print("List of upload keys:")
-    for i in range(len(validkeys)):
-        showkey = validkeys[i][:6]
-        if len(validkeys[i]) > 6:
-            showkey += "..."  # add ellipses since the key was shortened in list
-
-        print(f"    [{i+1}] {showkey}")
-
-
-def cmd_generate(args):
-    k = genkey(args.length)
-    logging.debug(f"Generated a new key: {k}")
-    savekey(k)
-    print(f"Your new key is: {k}")
-
-
-def cmd_add(args):
-    print("Please type/paste the key you would like to add.")
-    akr = input("> ")
-    ak = akr.strip()
-    print()
-    logging.debug("Ran strip() on key")
-    print(ak)
-    if input("Is the above key correct? [y/N] ").lower() == "y":
-        logging.debug("Interpreted as yes")
-        savekey(ak)
-        logging.info("Added.")
-    else:
-        logging.debug("Interpreted as no")
-        print("No key has been saved.")
-
-
-def cmd_remove(args):
-    if rmkey(args.key):
-        logging.debug("Successfully removed the requested key")
-    else:
-        logging.info("No key was removed.")
-
-def cmd_dedupe(args):
-    dupes = find_duplicates()
-    if len(dupes) > 0:
-        for d in dupes:
-            r = rmkey(d)
-            logging.debug(r)
-            logging.info(f"Removed duplicate key: {d}")
-    else:
-        logging.info("[" + u"\u2713" + "] No duplicate keys found!")
-
-def cmd_show(args):
-    for k in get_keys():
-        if k[:6] == args.prefix:
-            print(f"Key: {k}")
-            break
-
-
-parser = argparse.ArgumentParser()  # create instance of argument parser class
-
-parlog = parser.add_mutually_exclusive_group()
-parlog.add_argument("-v", "--verbose", help="show debugging messages", action="store_true")
-parlog.add_argument("-q", "--quiet", help="show only warning messages and up", action="store_true")
-
-subparsers = parser.add_subparsers(help="sub-commands")
-parser_list = subparsers.add_parser("list", help="list the beginning of each key")
-parser_list.set_defaults(func=cmd_list)
-
-parser_gen = subparsers.add_parser("generate", help="generate a key and save it to uploadkeys")
-parser_gen.add_argument("length", help="length of key to generate", default=64, type=int, nargs="?")
-parser_gen.set_defaults(func=cmd_generate)
-
-parser_add = subparsers.add_parser("add", help="prompts for a key to add to uploadkeys")
-parser_add.set_defaults(func=cmd_add)
-
-parser_remove = subparsers.add_parser("remove", help="remove (one instance of) a key from uploadkeys")
-parser_remove.add_argument("key", help="key to remove")
-parser_remove.set_defaults(func=cmd_remove)
-
-parser_dedupe = subparsers.add_parser("dedupe", help="remove duplicate keys")
-parser_dedupe.set_defaults(func=cmd_dedupe)
-
-parser_show = subparsers.add_parser("show", help="show the full key based on the first 6 characters")
-parser_show.add_argument("prefix", help="first 6 characters of key (shown by `python3 keyctl.py list`)")
-parser_show.set_defaults(func=cmd_show)
-
-
-args = parser.parse_args()  # parse the arguments
-
-if args.verbose:
-    loglevel = logging.DEBUG
-elif args.quiet:
-    loglevel = logging.WARNING
-else:
-    loglevel = logging.INFO
-logging.basicConfig(level=loglevel, format="%(levelname)s: %(message)s")
-
-try:
-    args.func(args)
-except AttributeError:
-    logging.error("AttributeError")
-    parser.print_help()

keygen.py

@@ -0,0 +1,108 @@
+from cryptography.fernet import Fernet
+from cryptography.fernet import InvalidToken
+from pathlib import Path
+import settings
+import string
+import secrets
+import sys
+import os
+
+
+# Load secret
+def load_secret():
+    with open(settings.ENCKEY_PATH, "rb") as sf:
+        secret = sf.read()
+    return secret
+
+
+# Encrypting and storing of key
+def append_uploadkey(akey):
+    with open('uploadkeys', 'a+') as uploadkeysf:
+        print(str(akey), file=uploadkeysf)
+
+
+def decrypt_uploadkeys():
+    with open("uploadkeys", "rb") as uploadkeysf:
+        uploadkeys_data = uploadkeysf.read()
+
+    try:
+        secret = load_secret()
+        secretf = Fernet(secret)
+        decrypted_data = secretf.decrypt(uploadkeys_data)  # decrypt data
+        with open("uploadkeys", "wb") as ukf:
+            ukf.write(decrypted_data)  # write the original file
+        print("Done decrypting")  # debug
+        return True
+    except InvalidToken:
+        print("InvalidToken")  # debug
+        print("The encrypted key data is invalid and cannot be read.")
+        print("It may be necessary to clear the file entirely, which will invalidate all tokens.")
+        proceed = ask_yn("Do you wish to proceed to clearing the uploadkeys file? [y/n] ")
+
+        if proceed:
+            os.remove("uploadkeys")
+            print("Removed uploadkeys file.")
+            proceed2 = ask_yn("Would you like to continue and generate a new key? [y/n] ")
+            if not proceed2:
+                return False
+            else:
+                return True
+        else:
+            return False
+
+
+def encrypt_uploadkeys():
+    with open("uploadkeys", "rb") as uploadkeysf:
+        uploadkeys_data = uploadkeysf.read()
+
+    secret = load_secret()
+    secretf = Fernet(secret)
+    encrypted_data = secretf.encrypt(uploadkeys_data)
+
+    with open("uploadkeys", "wb") as uploadkeysf:
+        uploadkeysf.write(encrypted_data)
+
+
+def ask_yn(msg):
+    resps = {"y": True, "n": False}
+    ask = True
+    while ask:
+        proceedraw = input(msg)
+        if proceedraw.lower() in resps.keys():
+            proceed = resps[proceedraw]
+            ask = False
+        else:
+            print("Invalid response.")
+    return proceed
+
+
+# Check if encryption secret already exists
+if Path(settings.ENCKEY_PATH).is_file():
+    print("Encryption secret found.")
+else:
+    print("Encryption secret not found.")
+    print("Generating secret...")
+    newsecret = Fernet.generate_key()
+    with open(settings.ENCKEY_PATH, "wb") as secret_file:
+        secret_file.write(newsecret)
+    print("Encryption secret generated and stored in {0}".format(settings.ENCKEY_PATH))
+
+
+if __name__ == "__main__":
+    start = ask_yn("Have you run this program as the correct user (for example, nginx uses www-data)? [y/n] ")
+    if not start:
+        print("Please run this as the correct user with: sudo su [user] -s /bin/sh -c 'python3 keygen.py'")
+
+    else:
+        uploadkeysp = Path("uploadkeys")
+        if not uploadkeysp.is_file():
+            uploadkeysp.touch()
+
+        if decrypt_uploadkeys():  # Decrypt the file
+            N = 64  # Size of key
+            key = ''.join(secrets.choice(string.ascii_letters + string.digits) for i in range(N))
+            print("Your new key is: " + str(key))  # Print key
+            append_uploadkey(key)  # Save the new key to file unencrypted
+            encrypt_uploadkeys()  # Encrypt the uploadkeys file
+        else:
+            print("Exiting.")

requirements.txt

@@ -1,3 +1,3 @@
 Flask_API==2.0
+cryptography==3.1
 Flask==1.1.2
-Pillow==8.0.1

settings.py.default

@@ -1,13 +1,7 @@
-#!/usr/bin/env python3
-"""
-settings.py
-
-User-defined settings used by imgupload.py.
-"""
-
 UPLOAD_FOLDER = "/path/to/images"
 ALLOWED_EXTENSIONS = [".png", ".jpg", ".jpeg", ".svg", ".bmp", ".gif", ".ico",  ".webp"]
 ROOTURL = "https://example.com/"
 SAVELOG = "savelog.log"
 SAVELOG_CHMOD = 0o644
 SAVELOG_KEYPREFIX = 4
+ENCKEY_PATH = "secret.key"

uwsgi.ini.default

@@ -1,12 +0,0 @@
-[uwsgi]
-socket = /srv/imgupload/uwsgi.sock
-chmod-socket = 755
-chdir = /srv/imgupload
-venv = /srv/imgupload/env
-master = true
-module = imgupload:app
-processes = 10
-threads = 1
-uid = www-data
-gid = www-data
-plugins = python3,logfile