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404 lines
13 KiB
404 lines
13 KiB
#!/usr/bin/env python
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# -*- coding: UTF-8 -*-
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import base64
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import binascii
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import errno
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import imghdr
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import random
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import os
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import select
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import socket
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import sys
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import threading
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import time
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try:
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from json import read as json_decode, write as json_encode
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except ImportError:
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try:
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from json import loads as json_decode, dumps as json_encode
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except ImportError:
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from simplejson import loads as json_decode, dumps as json_encode
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try:
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from urllib2 import build_opener, HTTPRedirectHandler, Request, HTTPError
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from urllib import urlencode, urlopen
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except ImportError:
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from urllib.request import build_opener, HTTPRedirectHandler, Request, urlopen
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from urllib.error import HTTPError
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from urllib.parse import urlencode
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# API version and unique software ID
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API_VERSION = 'DBC/Python v4.0.11'
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SOFTWARE_VENDOR_ID = 0
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# Default CAPTCHA timeout and decode() polling interval
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DEFAULT_TIMEOUT = 60
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POLLS_INTERVAL = 5
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# Base HTTP API url
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HTTP_BASE_URL = 'http://api.deathbycaptcha.com/api'
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# Preferred HTTP API server's response content type, do not change
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HTTP_RESPONSE_TYPE = 'application/json'
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# Socket API server's host & ports range
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SOCKET_HOST = 'api.deathbycaptcha.com'
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SOCKET_PORTS = range(8123, 8131)
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class AccessDeniedException(Exception):
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pass
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class Client(object):
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"""Death by Captcha API Client"""
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def __init__(self, username, password):
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self.is_verbose = False
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self.userpwd = {'username': username,
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'password': password}
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def _load_file(self, captcha):
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if hasattr(captcha, 'read'):
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raw_captcha = captcha.read()
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elif isinstance(captcha, bytearray):
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raw_captcha = captcha
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elif os.path.isfile(captcha):
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raw_captcha = ''
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try:
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f = open(captcha, 'rb')
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except Exception as e:
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raise e
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else:
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raw_captcha = f.read()
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f.close()
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else:
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f_stream = urlopen(captcha)
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raw_captcha = f_stream.read()
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if not len(raw_captcha):
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raise ValueError('CAPTCHA image is empty')
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elif imghdr.what(None, raw_captcha) is None:
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raise TypeError('Unknown CAPTCHA image type')
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else:
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return raw_captcha
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def _log(self, cmd, msg=''):
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if self.is_verbose:
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print('%d %s %s' % (time.time(), cmd, msg.rstrip()))
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return self
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def close(self):
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pass
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def connect(self):
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pass
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def get_user(self):
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"""Fetch the user's details dict -- balance, rate and banned status."""
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raise NotImplemented()
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def get_balance(self):
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"""Fetch the user's balance (in US cents)."""
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return self.get_user().get('balance')
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def get_captcha(self, cid):
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"""Fetch a CAPTCHA details dict -- its ID, text and correctness."""
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raise NotImplemented()
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def get_text(self, cid):
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"""Fetch a CAPTCHA text."""
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return self.get_captcha(cid).get('text') or None
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def report(self, cid):
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"""Report a CAPTCHA as incorrectly solved."""
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raise NotImplemented()
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def remove(self, cid):
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"""Remove an unsolved CAPTCHA."""
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raise NotImplemented()
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def upload(self, captcha):
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"""Upload a CAPTCHA.
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Accepts file names and file-like objects. Returns CAPTCHA details
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dict on success.
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"""
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raise NotImplemented()
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def decode(self, captcha, timeout=DEFAULT_TIMEOUT):
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"""Try to solve a CAPTCHA.
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See Client.upload() for arguments details.
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Uploads a CAPTCHA, polls for its status periodically with arbitrary
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timeout (in seconds), returns CAPTCHA details if (correctly) solved.
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"""
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deadline = time.time() + (max(0, timeout) or DEFAULT_TIMEOUT)
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c = self.upload(captcha)
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if c:
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while deadline > time.time() and not c.get('text'):
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time.sleep(POLLS_INTERVAL)
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c = self.get_captcha(c['captcha'])
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if c.get('text') and c.get('is_correct'):
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return c
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class HttpClient(Client):
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"""Death by Captcha HTTP API client."""
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def __init__(self, *args):
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Client.__init__(self, *args)
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self.opener = build_opener(HTTPRedirectHandler())
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def _call(self, cmd, payload=None, headers=None):
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if headers is None:
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headers = {}
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headers['Accept'] = HTTP_RESPONSE_TYPE
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headers['User-Agent'] = API_VERSION
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if hasattr(payload, 'items'):
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payload = urlencode(payload)
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self._log('SEND', '%s %d %s' % (cmd, len(payload), payload))
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if payload is not None:
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headers['Content-Length'] = len(payload)
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try:
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response = self.opener.open(Request(
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HTTP_BASE_URL + '/' + cmd.strip('/'),
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data=payload,
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headers=headers
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)).read()
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except HTTPError as e:
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if 403 == e.code:
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raise AccessDeniedException(
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'Access denied, please check your credentials and/or balance')
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elif 400 == e.code or 413 == e.code:
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raise ValueError("CAPTCHA was rejected by the service, check if it's a valid image")
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else:
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self._log('RECV', '%d %s' % (len(response), response))
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try:
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return json_decode(response)
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except Exception:
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raise RuntimeError('Invalid API response')
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return {}
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def get_user(self):
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return self._call('user', self.userpwd.copy()) or {'user': 0}
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def get_captcha(self, cid):
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return self._call('captcha/%d' % cid) or {'captcha': 0}
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def report(self, cid):
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return not self._call('captcha/%d/report' % cid,
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self.userpwd.copy()).get('is_correct')
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def remove(self, cid):
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return not self._call('captcha/%d/remove' % cid,
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self.userpwd.copy()).get('captcha')
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def upload(self, captcha):
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boundary = binascii.hexlify(os.urandom(16))
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data = self.userpwd.copy()
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data['swid'] = SOFTWARE_VENDOR_ID
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body = '\r\n'.join(('\r\n'.join(('--%s' % boundary,
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'Content-Disposition: form-data; name="%s"' % k,
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'Content-Type: text/plain',
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'Content-Length: %d' % len(str(v)),
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'',
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str(v))))
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for k, v in data.items())
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captcha = self._load_file(captcha)
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body += '\r\n'.join(('',
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'--%s' % boundary,
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'Content-Disposition: form-data; name="captchafile"; filename="captcha"',
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'Content-Type: application/octet-stream',
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'Content-Length: %d' % len(captcha),
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'',
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captcha,
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'--%s--' % boundary,
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''))
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response = self._call('captcha', body, {
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'Content-Type': 'multipart/form-data; boundary="%s"' % boundary
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}) or {}
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if response.get('captcha'):
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return response
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class SocketClient(Client):
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"""Death by Captcha socket API client."""
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TERMINATOR = '\r\n'
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def __init__(self, *args):
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Client.__init__(self, *args)
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self.socket_lock = threading.Lock()
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self.socket = None
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def close(self):
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if self.socket:
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self._log('CLOSE')
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try:
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self.socket.shutdown(socket.SHUT_RDWR)
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except socket.error:
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pass
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finally:
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self.socket.close()
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self.socket = None
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def connect(self):
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if not self.socket:
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self._log('CONN')
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host = (socket.gethostbyname(SOCKET_HOST),
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random.choice(SOCKET_PORTS))
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self.socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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self.socket.settimeout(0)
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try:
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self.socket.connect(host)
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except socket.error as e:
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if errno.EINPROGRESS == e[0]:
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pass
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else:
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self.close()
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raise e
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return self.socket
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def __del__(self):
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self.close()
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def _sendrecv(self, sock, buf):
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self._log('SEND', buf)
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fds = [sock]
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buf += self.TERMINATOR
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response = ''
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while True:
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rd, wr, ex = select.select((not buf and fds) or [],
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(buf and fds) or [],
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fds,
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POLLS_INTERVAL)
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if ex:
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raise IOError('select() failed')
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try:
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if wr:
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while buf:
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buf = buf[wr[0].send(buf):]
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elif rd:
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while True:
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s = rd[0].recv(256)
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if not s:
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raise IOError('recv(): connection lost')
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else:
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response += s
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except socket.error as e:
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if e[0] not in (errno.EAGAIN, errno.EINPROGRESS):
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raise e
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if response.endswith(self.TERMINATOR):
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self._log('RECV', response)
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return response.rstrip(self.TERMINATOR)
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raise IOError('send/recv timed out')
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def _call(self, cmd, data=None):
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if data is None:
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data = {}
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data['cmd'] = cmd
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data['version'] = API_VERSION
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request = json_encode(data)
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response = None
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for i in range(2):
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self.socket_lock.acquire()
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try:
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sock = self.connect()
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response = self._sendrecv(sock, request)
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except IOError as e:
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sys.stderr.write(str(e) + "\n")
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self.close()
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except socket.error as e:
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sys.stderr.write(str(e) + "\n")
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self.close()
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raise IOError('Connection refused')
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else:
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break
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finally:
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self.socket_lock.release()
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try:
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if response is None:
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raise IOError('Connection lost timed out during API request')
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try:
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response = json_decode(response)
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except Exception:
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raise RuntimeError('Invalid API response')
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if 'error' in response:
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error = response['error']
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if 'not-logged-in' == error:
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raise AccessDeniedException('Access denied, check your credentials')
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elif 'banned' == error:
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raise AccessDeniedException('Access denied, account is suspended')
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elif 'insufficient-funds' == error:
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raise AccessDeniedException('CAPTCHA was rejected due to low balance')
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elif 'invalid-captcha' == error:
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raise ValueError('CAPTCHA is not a valid image')
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elif 'service-overload' == error:
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raise ValueError(
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'CAPTCHA was rejected due to service overload, try again later')
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else:
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raise RuntimeError('API server error occured: %s' % error)
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except Exception as e:
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self.socket_lock.acquire()
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self.close()
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self.socket_lock.release()
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raise e
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else:
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return response
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def get_user(self):
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return self._call('user', self.userpwd.copy()) or {'user': 0}
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def get_captcha(self, cid):
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return self._call('captcha', {'captcha': cid}) or {'captcha': 0}
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def upload(self, captcha):
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data = self.userpwd.copy()
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data['captcha'] = base64.b64encode(self._load_file(captcha))
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response = self._call('upload', data)
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if response.get('captcha'):
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return dict((k, response.get(k)) for k in ('captcha', 'text', 'is_correct'))
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def report(self, cid):
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data = self.userpwd.copy()
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data['captcha'] = cid
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return not self._call('report', data).get('is_correct')
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def remove(self, cid):
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data = self.userpwd.copy()
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data['captcha'] = cid
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return not self._call('remove', data).get('captcha')
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if '__main__' == __name__:
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import sys
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# Put your DBC username & password here:
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#client = HttpClient(sys.argv[1], sys.argv[2])
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client = SocketClient(sys.argv[1], sys.argv[2])
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client.is_verbose = True
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print('Your balance is %s US cents' % client.get_balance())
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for fn in sys.argv[3:]:
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try:
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# Put your CAPTCHA image file name or file-like object, and optional
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# solving timeout (in seconds) here:
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captcha = client.decode(fn, DEFAULT_TIMEOUT)
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except Exception as e:
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sys.stderr.write('Failed uploading CAPTCHA: %s\n' % (e, ))
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captcha = None
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if captcha:
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print('CAPTCHA %d solved: %s' % (captcha['captcha'], captcha['text']))
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# Report as incorrectly solved if needed. Make sure the CAPTCHA was
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# in fact incorrectly solved!
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try:
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client.report(captcha['captcha'])
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except Exception as e:
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sys.stderr.write('Failed reporting CAPTCHA: %s\n' % (e, ))
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