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# Copyright (c) 2018, George Tokmaji
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
import sys
import os, re, json, math
import requests, hashlib
from bottle import route, run, Bottle, request, static_file, response, hook, HTTPResponse, JSONPlugin, install
import threading
os.chdir(os.path.dirname(__file__))
from .database import *
BLOCKSIZE = 1024 ** 2
locks = {
"io" : threading.Lock()
}
def with_lock(k):
def wrapper(f):
def func(*args, **kwargs):
with locks[k]:
return f(*args, **kwargs)
return func
return wrapper
def calculateHashForResource(resource : requests.Response) -> object:
hashobj = hashlib.sha1()
calculateHashForFile(resource.raw, hashobj)
assert(resource.raw.tell())
if "content-length" not in resource.headers:
resource.headers["Content-Length"] = resource.raw.tell()
return hashobj
def calculateHashForFile(file, hashobj : object = None) -> object:
if hashobj is None:
hashobj = hashlib.sha1()
while True:
block = file.read(BLOCKSIZE)
if not block:
break
hashobj.update(block)
return hashobj
def notAllowed():
raise HTTPResponse(f"Cannot {request.method} {request.path}")
@hook('after_request')
def enable_cors():
response.headers["Access-Control-Allow-Origin"] = "*"
# Auth
def calculateUserHash(username : str, password : str) -> object:
return hashlib.sha512(hashlib.sha512(username.encode("utf-8")).digest() + hashlib.sha512(password.encode("utf-8")).digest())
def auth_basic(f):
def checkAuth(*args, **kwargs):
session = DBSession()
try:
User.query.filter_by(name=requests.forms["username"], hash=calculateUserHash(request.forms["username"], request.forms["password"]).hexdigest()).first()
except db.orm.exc.NoResultFound:
return HTTPResponse(status=401)
del request.forms["password"]
return f(*args, **kwargs)
return checkAuth
class ParryEncoder(json.JSONEncoder):
_default = json.JSONEncoder.default
def default(self, obj):
if isinstance(obj, ObjectId):
return str(obj)
return self._default(obj)
install(JSONPlugin(json_dumps=lambda s: json.dumps(s, cls=ParryEncoder)))
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