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import requests
from BeautifulSoup import BeautifulSoup
import getpass
import time
import random
import re
import urllib
import traceback
class CsdnCommenter():
"""Csdn operator"""
def __init__(self):
self.sess = requests.Session()
def login(self):
"""login and keep session"""
username = raw_input('username: ')
password = getpass.getpass('password: ')
url = 'https://passport.csdn.net/account/login'
html = self.getUrlContent(self.sess, url)
if html is None:
return False
soup = BeautifulSoup(html)
lt = self.getElementValue(soup, 'name', 'lt')
execution = self.getElementValue(soup, 'name', 'execution')
_eventId = self.getElementValue(soup, 'name', '_eventId')
data = {
'username' : username,
'password' : password,
'lt' : lt,
'execution' : execution,
'_eventId' : _eventId
}
response = None
try:
response = self.sess.post(url, data)
except:
pass
return self.isLoginSuccess(response)
def autoComment(self):
"""main handler"""
if self.getSourceItems() is False:
print('No source can comment!')
return
print('Total %d source(s) wait for comment.' % len(self.sourceitems))
nhandled = 0
for sourceid in self.sourceitems.keys():
left = len(self.sourceitems) - nhandled
sec = random.randrange(61,71)
print('Wait %d seconds for start. %s source(s) left.' % (sec, left))
time.sleep(sec)
self.comment(sourceid)
nhandled += 1
print('Finished!')
def getSourceItems(self):
"""get (sourceid,username) couples wait for comment"""
self.sourceitems = dict()
pagecount = self.getPageCount()
if pagecount == 0:
return False
print('Pagecount is %d.' % pagecount)
pattern = re.compile(r'/detail/([^/]+)/(\d+)#comment')
for n in range(1, pagecount + 1):
if n == 1:
self.waitUncommentableSourceIfNecessary()
url = 'http://download.csdn.net/my/downloads/%d' % n
html = self.getUrlContent(self.sess, url)
if html is None:
continue
soup = BeautifulSoup(html)
sourcelist = soup.findAll('a', attrs={'class' : 'btn-comment'})
if sourcelist is None or len(sourcelist) == 0:
continue
for source in sourcelist:
href = source.get('href', None)
if href is not None:
rematch = pattern.match(href)
if rematch is not None:
self.sourceitems[rematch.group(2)] = rematch.group(1)
return len(self.sourceitems) > 0
def waitUncommentableSourceIfNecessary(self):
"""souce cannot comment within 10 minutes after download"""
url = 'http://download.csdn.net/my/downloads/1'
maxMinutes = 11
for i in range(0, maxMinutes):
html = self.getUrlContent(self.sess, url)
if html is None:
break
soup = BeautifulSoup(html)
sourcelist = soup.findAll('span', attrs={'class' : 'btn-comment'})
if sourcelist is None or len(sourcelist) == 0:
print('None uncommentable source now!')
break
print('Waiting for uncommentable source count down %d minutes.' % (maxMinutes-i))
time.sleep(60)
def getPageCount(self):
"""get downloaded resources page count"""
url = 'http://download.csdn.net/my/downloads'
html = self.getUrlContent(self.sess, url)
if html is None:
print('Get pagecount failed')
return 0
soup = BeautifulSoup(html)
pagelist = soup.findAll('a', attrs={'class' : 'pageliststy'})
if pagelist is None or len(pagelist) == 0:
return 0
lasthref = pagelist[len(pagelist) - 1].get('href', None)
if lasthref is None:
return 0
return int(filter(str.isdigit, str(lasthref)))
def comment(self, sourceid):
"""comment per source"""
print('sourceid %s commenting...' % sourceid)
contents = [
'It just soso, but thank you all the same.',
'Neither good nor bad.',
'It is a nice resource, thanks for share.',
'It is useful for me, thanks.',
'I have looking this for long, thanks.'
]
rating = self.getSourceRating(sourceid)
print('current rating is %d.' % rating)
if rating == 0:
rating = 3
content = contents[rating - 1]
t = '%d' % (time.time() * 1000)
paramsmap = {
'sourceid' : sourceid,
'content' : content,
'rating' : rating,
't' : t
}
params = urllib.urlencode(paramsmap)
url = 'http://download.csdn.net/index.php/comment/post_comment?%s' % params
html = self.getUrlContent(self.sess, url)
if html is None or html.find('({"succ":1})') == -1:
print('sourceid %s comment failed! response is %s.' % (sourceid, html))
else:
print('sourceid %s comment succeed!' % sourceid)
def getSourceRating(self, sourceid):
"""get current source rating"""
rating = 3
url = 'http://download.csdn.net/detail/%s/%s' % (self.sourceitems[sourceid], sourceid)
html = self.getUrlContent(self.sess, url)
if html is None:
return rating
soup = BeautifulSoup(html)
ratingspan = soup.findAll('span', attrs={'class': 'star-yellow'})
if ratingspan is None or len(ratingspan) == 0:
return rating
ratingstyle = ratingspan[0].get('style', None)
if ratingstyle is None:
return rating
rating = int(filter(str.isdigit, str(ratingstyle))) / 15
return rating
@staticmethod
def getElementValue(soup, element_name, element_value):
element = soup.find(attrs={element_name : element_value})
if element is None:
return None
return element.get('value', None)
@staticmethod
def isLoginSuccess(response):
if response is None or response.status_code != 200:
return False
return -1 != response.content.find('lastLoginIP')
@staticmethod
def getUrlContent(session, url):
html = None
try:
response = session.get(url)
if response is not None:
html = response.text
except requests.exceptions.ConnectionError as e:
pass
return html
def main():
csdn = CsdnCommenter()
while csdn.login() is False:
print('Login failed! Please try again.')
print('Login succeed!')
csdn.autoComment()
if __name__ == '__main__':
main()
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