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Filename :
VEpycurl.py
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""" Copyright (C) 2009, Kenneth East Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. """ # # module for VEpycurl - the Very Easy interface to pycurl # from StringIO import StringIO import urllib import pycurl import sys import os class VEpycurl() : """ A VERY EASY interface to pycurl, v1.0 Tested on 22Feb09 with python 2.5.1, py25-curl 7.19.0, libcurl/7.19.2, OS-X 10.5.6 """ def __init__(self, userAgent = 'Mozilla/4.0 (compatible; MSIE 8.0)', followLocation = 1, # follow redirects? autoReferer = 1, # allow 'referer' to be set normally? verifySSL = 0, # tell SSL to verify IDs? useCookies = True, # will hold all pycurl cookies useSOCKS = False, # use SOCKS5 proxy? proxy = 'localhost', # SOCKS host proxyPort = 8080, # SOCKS port proxyType = 5, # SOCKS protocol verbose = False, debug = False, ) : self.followLocation = followLocation self.autoReferer = autoReferer self.verifySSL = verifySSL self.useCookies = useCookies self.useSOCKS = useSOCKS self.proxy = proxy self.proxyPort = proxyPort self.proxyType = proxyType self.pco = pycurl.Curl() self.pco.setopt(pycurl.USERAGENT, userAgent) self.pco.setopt(pycurl.FOLLOWLOCATION, followLocation) self.pco.setopt(pycurl.MAXREDIRS, 20) self.pco.setopt(pycurl.CONNECTTIMEOUT, 30) self.pco.setopt(pycurl.AUTOREFERER, autoReferer) # SSL verification (True/False) self.pco.setopt(pycurl.SSL_VERIFYPEER, verifySSL) self.pco.setopt(pycurl.SSL_VERIFYHOST, verifySSL) if useCookies == True : cjf = os.tmpfile() # potential security risk here; see python documentation self.pco.setopt(pycurl.COOKIEFILE, cjf.name) self.pco.setopt(pycurl.COOKIEJAR, cjf.name) if useSOCKS : # if you wish to use SOCKS, it is configured through these parms self.pco.setopt(pycurl.PROXY, proxy) self.pco.setopt(pycurl.PROXYPORT, proxyPort) self.pco.setopt(pycurl.PROXYTYPE, proxyType) if verbose : self.pco.setopt(pycurl.VERBOSE, 1) if debug : print('PyCurl version info:') print(pycurl.version_info()) print() self.pco.setopt(pycurl.DEBUGFUNCTION, self.debug) return def perform(self, url, fields=None, headers=None) : if fields : # This is a POST and we have fields to handle fields = urllib.urlencode(fields) self.pco.setopt(pycurl.POST, 1) self.pco.setopt(pycurl.POSTFIELDS, fields) else : # This is a GET, and we do nothing with fields pass pageContents = StringIO() self.pco.setopt(pycurl.WRITEFUNCTION, pageContents.write) self.pco.setopt(pycurl.URL, url) if headers : self.pco.setopt(pycurl.HTTPHEADER, headers) self.pco.perform() self.pco.close() self.pc = pageContents return def results(self) : # return the page contents that were received in the most recent perform() # self.pc is a StringIO object self.pc.seek(0) return self.pc def debug(self, debug_type, debug_msg) : print('debug(%d): %s' % (debug_type, debug_msg)) return try: # only call this once in a process. see libcurl docs for more info. pycurl.global_init(pycurl.GLOBAL_ALL) except: print('Fatal error: call to pycurl.global_init() failed for some reason') sys.exit(1)