104 lines
4.3 KiB
Python
104 lines
4.3 KiB
Python
#!/usr/bin/env python3
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"""
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imgupload.py
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Flask application for processing images uploaded through POST requests.
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"""
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from flask import Flask, request, jsonify, abort, Response
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from cryptography.fernet import Fernet
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from flask_api import status
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from pathlib import Path
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import random
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import os
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import datetime
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import settings # app settings (such as allowed extensions)
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import functions # custom functions
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app = Flask(__name__) # app is the app
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def allowed_extension(testext):
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if testext in settings.ALLOWED_EXTENSIONS:
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return True
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else:
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return False
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def log_savelog(key, ip, savedname):
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if settings.SAVELOG_KEYPREFIX > 0:
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with open(settings.SAVELOG, "a+") as slogf:
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slogf.write("[{0}] {1}: {2} - {3}\n".format(datetime.datetime.now(), key[:settings.SAVELOG_KEYPREFIX], ip, savedname))
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os.chmod(settings.SAVELOG, settings.SAVELOG_CHMOD)
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else:
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with open(settings.SAVELOG, "a+") as slogf:
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slogf.write("[{0}] {1} - {2}\n".format(datetime.datetime.now(), ip, savedname))
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os.chmod(settings.SAVELOG, settings.SAVELOG_CHMOD)
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@app.route("/upload", methods = ["POST"])
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def upload():
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if request.method == "POST": # sanity check: make sure it's a POST request
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print("Request method was POST!")
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with open("uploadkeys", "r") as keyfile: # load valid keys
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validkeys = keyfile.readlines()
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validkeys = [x.strip("\n") for x in validkeys]
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while "" in validkeys:
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validkeys.remove("")
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print("Loaded validkeys")
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if "uploadKey" in request.form: # if an uploadKey was provided
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if request.form["uploadKey"] in validkeys: # check if uploadKey is valid
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print("Key is valid!")
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if "imageUpload" in request.files: # check if image to upload was provided
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f = request.files["imageUpload"] # f is the image to upload
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else:
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print("No image upload was found!")
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return jsonify({'status': 'error', 'error': 'NO_IMAGE_UPLOADED'}), status.HTTP_400_BAD_REQUEST
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if f.filename == "": # make sure the filename isn't blank
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print("Filename is blank")
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return jsonify({'status': 'error', 'error': 'FILENAME_BLANK'}), status.HTTP_400_BAD_REQUEST
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fext = Path(f.filename).suffix # get the uploaded extension
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if allowed_extension(fext): # if the extension is allowed
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print("Generating file with extension {0}".format(fext))
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fname = functions.generate_name() + fext # generate file name
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print("Generated name: {0}".format(fname))
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if f: # if the uploaded image exists
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print("Uploaded image exists")
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f.save(os.path.join(settings.UPLOAD_FOLDER, fname)) # save the image
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print("Saved to {0}".format(fname))
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url = settings.ROOTURL + fname # construct the url to the image
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if settings.SAVELOG != "/dev/null":
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print("Saving to savelog")
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log_savelog(request.form["uploadKey"], request.remote_addr, fname)
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print("Returning json response")
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return jsonify({'status': 'success', 'url': url, 'name': fname, 'uploadedName': f.filename}), status.HTTP_201_CREATED
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else: # this shouldn't happen
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print("Um... uploaded image... is nonexistent? Please report this error!")
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return jsonify({'status': 'error', 'error': 'UPLOADED_IMAGE_FAILED_SANITY_CHECK_1'}), status.HTTP_400_BAD_REQUEST
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else: # if the extension was invalid
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print("Uploaded extension is invalid!")
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abort(415)
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else: # if the key was not valid
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print("Key is invalid!")
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print("Request key: {0}".format(request.form["uploadKey"]))
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abort(401)
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else: # if uploadKey was not found in request body
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print("No uploadKey found in request!")
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abort(401)
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else: # if the request method wasn't post
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print("Request method was not POST!")
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abort(405)
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if __name__ == "__main__":
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print("Run with `flask` or a WSGI server!")
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