113 lines
3.3 KiB
Python
113 lines
3.3 KiB
Python
import socket
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import cPickle
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import cStringIO
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DNS_CACHE = {}
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_ALLOWED_MODULES = {'datetime': ['datetime']}
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def checkfunction(module, klass):
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if module in _ALLOWED_MODULES and klass in _ALLOWED_MODULES[module]:
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mod = __import__(module, {}, {}, ['__all__'])
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_class = getattr(mod, klass)
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return _class
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raise ValueError('Not supported: %s/%s' % (module, klass))
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class PySocketException(Exception):
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def __init__(self, code, string):
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Exception.__init__(self)
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self.faultCode = code
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self.faultString = string
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self.args = (code, string)
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class PySocket:
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def __init__(self, sock=None):
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self.sock = sock
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self.host = None
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self.port = None
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def connect(self, host, port=False):
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if not port:
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buf = host.split('//')[1]
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host, port = buf.split(':')
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if host in DNS_CACHE:
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host = DNS_CACHE[host]
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if not self.sock:
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familly = socket.AF_INET
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if socket.has_ipv6:
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try:
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socket.getaddrinfo(host, int(port), socket.AF_INET6)
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familly = socket.AF_INET6
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except:
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pass
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self.sock = socket.socket(familly, socket.SOCK_STREAM)
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self.sock.settimeout(120)
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self.sock.connect((host, int(port)))
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DNS_CACHE[host], port = self.sock.getpeername()[:2]
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self.host = host
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self.port = port
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def disconnect(self):
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try:
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self.sock.shutdown(socket.SHUT_RDWR)
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except:
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pass
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try:
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self.sock.close()
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except:
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pass
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def reconnect(self):
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if self.host and self.port:
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self.disconnect()
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familly = socket.AF_INET
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if socket.has_ipv6:
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familly = socket.AF_INET6
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self.sock = socket.socket(
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familly, socket.SOCK_STREAM)
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self.sock.settimeout(120)
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self.sock.connect((self.host, int(self.port)))
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def send(self, msg, exception=False, traceback=None):
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msg = cPickle.dumps([msg, traceback])
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size = len(msg)
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self.sock.send('%8d' % size)
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self.sock.send(exception and "1" or "0")
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totalsent = 0
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while totalsent < size:
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sent = self.sock.send(msg[totalsent:])
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if sent == 0:
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raise RuntimeError, "socket connection broken"
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totalsent = totalsent + sent
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def receive(self):
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buf = ''
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while len(buf) < 8:
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chunk = self.sock.recv(8 - len(buf))
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if chunk == '':
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raise RuntimeError, "socket connection broken"
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buf += chunk
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size = int(buf)
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buf = self.sock.recv(1)
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if buf != "0":
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exception = buf
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else:
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exception = False
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msg = ''
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while len(msg) < size:
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chunk = self.sock.recv(size-len(msg))
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if chunk == '':
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raise RuntimeError, "socket connection broken"
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msg = msg + chunk
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msgio = cStringIO.StringIO(msg)
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unpickler = cPickle.Unpickler(msgio)
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unpickler.find_global = checkfunction
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res = unpickler.load()
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if exception:
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raise PySocketException(str(res[0]), str(res[1]))
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else:
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return res[0]
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