Initial YakPanel commit
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Niranjan
196
class_v2/fastcgi_client_v2.py
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196
class_v2/fastcgi_client_v2.py
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#!/usr/bin/python
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# coding:utf-8
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import socket
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import random
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import re
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import sys
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class fastcgi_client:
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__FCGI_VERSION = 1
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__FCGI_ROLE_RESPONDER = 1
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__FCGI_ROLE_AUTHORIZER = 2
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__FCGI_ROLE_FILTER = 3
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__FCGI_TYPE_BEGIN = 1
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__FCGI_TYPE_ABORT = 2
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__FCGI_TYPE_END = 3
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__FCGI_TYPE_PARAMS = 4
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__FCGI_TYPE_STDIN = 5
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__FCGI_TYPE_STDOUT = 6
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__FCGI_TYPE_STDERR = 7
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__FCGI_TYPE_DATA = 8
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__FCGI_TYPE_GETVALUES = 9
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__FCGI_TYPE_GETVALUES_RESULT = 10
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__FCGI_TYPE_UNKOWNTYPE = 11
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__FCGI_HEADER_SIZE = 8
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FCGI_STATE_SEND = 1
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FCGI_STATE_ERROR = 2
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FCGI_STATE_SUCCESS = 3
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def __init__(self, host, port, timeout, keepalive):
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self.host = host
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self.port = port
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self.timeout = timeout
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if keepalive:
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self.keepalive = 1
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else:
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self.keepalive = 0
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self.sock = None
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self.requests = dict()
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def __connect(self):
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if self.port == None:
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self.sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
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else:
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self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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self.sock.settimeout(self.timeout)
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self.sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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try:
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if self.port != None:
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self.sock.connect((self.host, int(self.port)))
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else:
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self.sock.connect(self.host)
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except socket.error as msg:
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self.sock.close()
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self.sock = None
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print(repr(msg))
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return False
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return True
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def _chr(self,num):
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if sys.version_info[0] == 3:
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return chr(num).encode('latin1')
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return chr(num)
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def _ord(self,sbody):
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if sys.version_info[0] == 3:
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return sbody
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return ord(sbody)
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def __encodeFastCGIRecord(self, fcgi_type, content, requestid):
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if type(content) == str: content = content.encode()
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length = len(content)
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return self._chr(self.__FCGI_VERSION) \
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+ self._chr(fcgi_type) \
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+ self._chr((requestid >> 8) & 0xFF) \
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+ self._chr(requestid & 0xFF) \
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+ self._chr((length >> 8) & 0xFF) \
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+ self._chr(length & 0xFF) \
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+ self._chr(0) \
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+ self._chr(0) \
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+ content
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def __encodeNameValueParams(self, name, value):
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nLen = len(str(name))
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vLen = len(str(value))
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record = b''
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if nLen < 128:
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record += self._chr(nLen)
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else:
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record += self._chr((nLen >> 24) | 0x80) \
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+ self._chr((nLen >> 16) & 0xFF) \
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+ self._chr((nLen >> 8) & 0xFF) \
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+ self._chr(nLen & 0xFF)
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if vLen < 128:
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record += self._chr(vLen)
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else:
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record += self._chr((vLen >> 24) | 0x80) \
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+ self._chr((vLen >> 16) & 0xFF) \
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+ self._chr((vLen >> 8) & 0xFF) \
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+ self._chr(vLen & 0xFF)
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return record + str(name).encode() + str(value).encode()
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def __decodeFastCGIHeader(self, stream):
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header = dict()
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header['version'] = self._ord(stream[0])
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header['type'] = self._ord(stream[1])
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header['requestId'] = (self._ord(stream[2]) << 8) + self._ord(stream[3])
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header['contentLength'] = (self._ord(stream[4]) << 8) + self._ord(stream[5])
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header['paddingLength'] = self._ord(stream[6])
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header['reserved'] = self._ord(stream[7])
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return header
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def __decodeFastCGIRecord(self):
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header = self.sock.recv(int(self.__FCGI_HEADER_SIZE))
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if not header:
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return False
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else:
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record = self.__decodeFastCGIHeader(header)
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record['content'] = b''
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if 'contentLength' in record.keys():
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contentLength = int(record['contentLength'])
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buffer = self.sock.recv(contentLength)
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while contentLength and buffer:
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contentLength -= len(buffer)
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record['content'] += buffer
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if 'paddingLength' in record.keys():
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skiped = self.sock.recv(int(record['paddingLength']))
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return record
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def request(self, nameValuePairs={}, post=''):
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if not self.__connect():
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raise Exception('Connection service failed, please check if the specified service is started!')
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return
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requestId = random.randint(1, (1 << 16) - 1)
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self.requests[requestId] = dict()
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request = b""
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beginFCGIRecordContent = self._chr(0) \
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+ self._chr(self.__FCGI_ROLE_RESPONDER) \
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+ self._chr(self.keepalive) \
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+ self._chr(0) * 5
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request += self.__encodeFastCGIRecord(self.__FCGI_TYPE_BEGIN,
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beginFCGIRecordContent, requestId)
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paramsRecord = b''
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if nameValuePairs:
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v_items = sorted(nameValuePairs.items())
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for (name, value) in v_items:
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paramsRecord += self.__encodeNameValueParams(name, value)
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if paramsRecord:
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request += self.__encodeFastCGIRecord(self.__FCGI_TYPE_PARAMS, paramsRecord, requestId)
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request += self.__encodeFastCGIRecord(self.__FCGI_TYPE_PARAMS, b'', requestId)
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if post:
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request += self.__encodeFastCGIRecord(self.__FCGI_TYPE_STDIN, post, requestId)
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request += self.__encodeFastCGIRecord(self.__FCGI_TYPE_STDIN, b'', requestId)
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self.sock.send(request)
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self.requests[requestId]['state'] = self.FCGI_STATE_SEND
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self.requests[requestId]['response'] = b''
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return self.__waitForResponse(requestId)
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def __waitForResponse(self, requestId):
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while True:
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response = self.__decodeFastCGIRecord()
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if not response:
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break
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if response['type'] == self.__FCGI_TYPE_STDOUT \
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or response['type'] == self.__FCGI_TYPE_STDERR:
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if response['type'] == self.__FCGI_TYPE_STDERR:
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self.requests['state'] = self.FCGI_STATE_ERROR
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if requestId == int(response['requestId']):
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self.requests[requestId]['response'] += response['content']
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if response['type'] == self.FCGI_STATE_SUCCESS:
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self.requests[requestId]
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if self.requests[requestId]['response'].find(b'\r\n\r\n') != -1:
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tmp = b""
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tmp2 = self.requests[requestId]['response'].split(b'\r\n\r\n')
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for i in range(len(tmp2)):
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if i == 0: continue
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tmp += tmp2[i] + b'\r\n\r\n'
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self.requests[requestId]['response'] = tmp.strip()
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return self.requests[requestId]['response']
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def __repr__(self):
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return "fastcgi connect host:{} port:{}".format(self.host, self.port)
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