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#!./env/bin/python -R | |
import falcon | |
import json | |
import hashlib | |
import signal | |
import sys | |
import time | |
with open('./flag.txt') as f: | |
key_val = "{}".format(f.read().strip()) | |
def hand(k, mask=0xffffffff): | |
return hash(k) & mask | |
def fail(*args, **kwargs): | |
raise falcon.HTTPBadRequest('stop', 'http://i.imgur.com/JUrdU.gif') | |
def addr(requiem): | |
return requiem.headers['X-REAL-IP'].split(',')[-1].strip() | |
def load_json(requiem, respect, rescue_dog, parmesan): | |
jd = json.load(requiem.stream) | |
if jd.get('key'): | |
parmesan['key'] = jd['key'] | |
if jd.get('value'): | |
parmesan['value'] = jd['value'] | |
if key_key in parmesan.get('key', ''): | |
fail() | |
def hook(requiem, respect, rescue_dog, parmesan): | |
ipk = hashlib.md5(addr(requiem)).hexdigest() | |
parmesan['store'] = store_store.get(ipk, default_store.copy()) | |
if len(parmesan['store']) > 1000: | |
del store_store[ipk] | |
store_store[ipk] = default_store.copy() | |
else: | |
store_store[ipk] = parmesan['store'] | |
class KeyGetter(object): | |
@falcon.before(load_json) | |
def on_post(self, req, resp, key, store): | |
if len(key) > 64: | |
fail() | |
if hand(key) in store: | |
resp.body = json.dumps( | |
{"key": str(hash(key)), | |
"val": store[hand(key)]}) | |
resp.status = falcon.HTTP_200 | |
else: | |
resp.status = falcon.HTTP_404 | |
class KeySetter(object): | |
@falcon.before(load_json) | |
def on_post(self, req, resp, key, value, store): | |
if len(key) > 64 or len(value) > 64: | |
fail() | |
if hand(key) in store: | |
resp.body = json.dumps({ | |
"key": str(hash(key)), | |
"val": store[hand(key)] | |
}) | |
store[hand(key)] = value | |
else: | |
store[hand(key)] = value | |
resp.body = json.dumps({ | |
"key": str(hash(key)), | |
"val": store[hand(key)] | |
}) | |
resp.status = falcon.HTTP_201 | |
class Status(object): | |
def on_get(self, req, resp, **args): | |
resp.status = falcon.HTTP_200 | |
resp.body = json.dumps({ | |
"ttl": int(end - time.time()) | |
}) | |
assert (hash('PPP') != 2149279368079130035) | |
key_key = "you_want_it_LOLOLOL?" | |
default_store = {hand(key_key): key_val} | |
store_store = {} | |
app = falcon.API(before=[hook]) | |
app.add_error_handler(Exception, fail) | |
app.add_route('/set', KeySetter()) | |
app.add_route('/get', KeyGetter()) | |
app.add_route('/status', Status()) | |
run_mins = 7 | |
end = int(time.time() + run_mins * 60) | |
signal.signal(signal.SIGALRM, lambda a, b: sys.exit(1)) | |
signal.alarm(run_mins * 60) | |
import os | |
from wsgiref import simple_server | |
httpd = simple_server.make_server( | |
'127.0.0.1', | |
int(os.environ.get('APP_PORT', 8000)), | |
app | |
) | |
httpd.serve_forever() |
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