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fetcher.py
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fetcher.py
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#coding=utf-8
import time
import urllib2
import urllib
import cookielib
import re
import json
import hashlib
import base64
import os
import lxml.html as HTML
from log import logger
from settings import (
account,
pwd,
)
cookie_file = os.path.join(os.path.abspath(os.path.dirname(__file__)), 'cookies.txt')
def create_cookie_file():
if not os.path.exists(cookie_file):
f = open(cookie_file, 'w')
try:
return True
finally:
f.close()
return False
def urldecode(link):
decodes = {}
if '?' in link:
params = link.split('?')[1]
for param in params.split('&'):
k, v = tuple(param.split('='))
decodes[k] = urllib.unquote(v)
return decodes
class Fetcher(object):
def __init__(self):
self.create = create_cookie_file()
self.cj = cookielib.LWPCookieJar()
if not self.create:
self.cj.load(cookie_file)
self.cookie_processor = urllib2.HTTPCookieProcessor(self.cj)
self.opener = urllib2.build_opener(self.cookie_processor, urllib2.HTTPHandler)
urllib2.install_opener(self.opener)
self.username = account
self.pwd = pwd
def get_servertime(self):
url = 'http://login.sina.com.cn/sso/prelogin.php?entry=weibo&callback=sinaSSOController.preloginCallBack&su=dW5kZWZpbmVk&client=ssologin.js(v1.3.18)&_=1329806375939'
data = urllib2.urlopen(url).read()
regex = re.compile('\((.*)\)')
try:
json_data = regex.search(data).group(1)
data = json.loads(json_data)
servertime = str(data['servertime'])
nonce = data['nonce']
return servertime, nonce
except:
print 'Get servertime error!'
def get_pwd(self, pwd, servertime, nonce):
sha1 = lambda pwd: hashlib.sha1(pwd).hexdigest()
for _ in range(2):
pwd = sha1(pwd)
pwd = pwd + servertime + nonce
return sha1(pwd)
def get_user(self, username):
username = urllib.quote(username)
return base64.encodestring(username)[:-1]
def login(self):
assert self.username is not None and self.pwd is not None
url = 'http://login.sina.com.cn/sso/login.php?client=ssologin.js(v1.3.18)'
try:
servertime, nonce = self.get_servertime()
except:
return
postdata = {
'entry': 'weibo',
'gateway': '1',
'from': '',
'savestate': '7',
'userticket': '1',
'ssosimplelogin': '1',
'vsnf': '1',
'vsnval': '',
'su': self.get_user(self.username),
'service': 'miniblog',
'servertime': servertime,
'nonce': nonce,
'pwencode': 'wsse',
'sp': self.get_pwd(self.pwd, servertime, nonce),
'encoding': 'UTF-8',
'url': 'http://weibo.com/ajaxlogin.php?framelogin=1&callback=parent.sinaSSOController.feedBackUrlCallBack',
'returntype': 'META'
}
postdata = urllib.urlencode(postdata)
headers = {'User-Agent':'Mozilla/5.0 (X11; Linux i686; rv:8.0) Gecko/20100101 Firefox/8.0'}
req = urllib2.Request(url, postdata, headers)
text = urllib2.urlopen(req).read()
regex = re.compile('location\.replace\(\'(.*?)\'\)')
try:
login_url = regex.search(text).group(1)
logger.info(login_url)
urllib2.urlopen(login_url)
logger.info("login succeed!")
except:
logger.info("login failed!")
def fetch(self, url):
return urllib2.urlopen(url).read()
class CnFetcher(Fetcher):
def __init__(self):
super(CnFetcher, self).__init__()
self.headers = {'User-Agent':'Mozilla/5.0 (Windows NT 6.1; rv:14.0) Gecko/20100101 Firefox/14.0.1',
'Referer':'','Content-Type':'application/x-www-form-urlencoded'}
def _get_rand(self, url):
headers = {'User-Agent':'Mozilla/5.0 (Windows;U;Windows NT 5.1;zh-CN;rv:1.9.2.9)Gecko/20100824 Firefox/3.6.9',
'Referer':''}
req = urllib2.Request(url ,urllib.urlencode({}), headers)
resp = urllib2.urlopen(req)
login_page = resp.read()
rand = HTML.fromstring(login_page).xpath("//form/@action")[0]
passwd = HTML.fromstring(login_page).xpath("//input[@type='password']/@name")[0]
vk = HTML.fromstring(login_page).xpath("//input[@name='vk']/@value")[0]
return rand, passwd, vk
def get_rand(self, url):
error = None
for i in range(3):
try:
return self._get_rand(url)
except urllib2.httplib.BadStatusLine, e:
error = e
time.sleep((i + 1) * 10)
continue
if error is not None:
raise error
def login(self):
assert self.username is not None and self.pwd is not None
def _urlopen(req):
for i in range(3):
try:
return urllib2.urlopen(req)
except urllib2.httplib.BadStatusLine, e:
if i < 2:
time.sleep((i + 1) * 10)
continue
else:
raise e
url = 'http://3g.sina.com.cn/prog/wapsite/sso/login.php?ns=1&revalid=2&backURL=http%3A%2F%2Fweibo.cn%2F&backTitle=%D0%C2%C0%CB%CE%A2%B2%A9&vt='
rand, passwd, vk = self.get_rand(url)
data = urllib.urlencode({'mobile': self.username,
passwd: self.pwd,
'remember': 'on',
'backURL': 'http://weibo.cn/',
'backTitle': '新浪微博',
'vk': vk,
'submit': '登录',
'encoding': 'utf-8'})
url = 'http://3g.sina.com.cn/prog/wapsite/sso/' + rand
req = urllib2.Request(url, data, self.headers)
# resp = urllib2.urlopen(req)
resp = _urlopen(req)
page = resp.read()
link = HTML.fromstring(page).xpath("//a/@href")[0]
# decodes = urldecode(link)
# link = decodes['u']
if not link.startswith('http://'): link = 'http://weibo.cn/%s' % link
req = urllib2.Request(link, headers=self.headers)
# urllib2.urlopen(req)
_urlopen(req)
link = urldecode(link)
self.fetch_params = urldecode(link['u'])
if self.create:
self.cj.save(filename=cookie_file)
elif self.cj.filename is not None:
self.cj.save()
logger.info('login succeed!')
def fetch(self, url):
logger.info('fetch url: %s', url)
if not hasattr(self, 'fetch_params'):
self.login()
params = urldecode(url)
params.update(self.fetch_params)
url = '%s?%s' % (url.split('?', 1)[0], urllib.urlencode(params))
req = urllib2.Request(url, headers=self.headers)
return urllib2.urlopen(req).read()