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path: root/facebook_scraping/client/tasks.py
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from xvfbwrapper import Xvfb
from selenium import webdriver
from selenium.common.exceptions import ElementNotVisibleException,\
    NoSuchElementException, StaleElementReferenceException, WebDriverException
from time import sleep
from bs4 import BeautifulSoup, NavigableString
from celery import Celery, Task
from urllib2 import urlopen
import socket

app = Celery('tasks', broker='amqp://guest@horel.org//')
app.conf.CELERY_RESULT_BACKEND = 'rpc'
app.conf.CELERY_ENABLE_UTC = True
app.conf.CELERY_ACKS_LATE = True
drivers = [None]
ip = socket.gethostbyname(socket.gethostname())


def strip(url):
    if url.endswith("/friends"):
        return url[:-8]
    else:
        return url.split("&")[0]


def normalize(url):
    if "profile.php" in url:
        basename = url.split("&")[0]
        fname = basename.split("=")[-1]
        getname = basename + "&sk=friends"
    else:
        basename = url.split("?")[0]
        fname = basename.split("/")[-1]
        getname = basename + "/friends"
    return basename, fname, getname


class ListFollowers(Task):

    @property
    def driver(self):
        if drivers[0] is None:
            uname, passwd = urlopen("http://horel.org:8080/").readline().strip().split()
            vdisplay = Xvfb()
            vdisplay.start()
            driver = webdriver.Chrome()
            driver.get("https://facebook.com")
            driver.find_element_by_id("email").send_keys(uname)
            elem = driver.find_element_by_id("pass")
            elem.send_keys(passwd)
            elem.submit()
            drivers[0] = driver
        return drivers[0]

    def run(self, url):
        try:
            self.driver.get(url)
        except WebDriverException:
            return {"friends": [], "for": url, "orig": ip}

        while True:
            for _ in xrange(5):
                try:
                    footer = self.driver.find_element_by_class_name("_359")
                except (NoSuchElementException, ElementNotVisibleException):
                    sleep(0.1)
                else:
                    break
            else:
                break

            try:
                self.driver.execute_script("window.scrollTo(0, document.body.scrollHeight);")
                footer.click()
            except StaleElementReferenceException:
                sleep(0.1)
            except WebDriverException:
                for _ in xrange(5):
                    try:
                        footer.click()
                    except (WebDriverException, StaleElementReferenceException):
                        sleep(0.1)
                    else:
                        break
                else:
                    break

        for _ in xrange(5):
            try:
                div = self.driver.find_element_by_class_name("_30f")
            except NoSuchElementException:
                sleep(0.1)
            else:
                break
        else:
            try:
                self.driver.find_element_by_id("loginbutton")
            except NoSuchElementException:
                return {"friends": [], "for": url, "orig": ip}
            else:
                return {"friends": None, "for": url, "orig": ip}

        soup = BeautifulSoup(div.get_attribute("outerHTML"))
        return {"friends": [li.a["href"]
                            for li in soup.findAll("li", class_="_698")],
                "for": url,
                "orig": ip}


class NumFollowers(Task):

    @property
    def driver(self):
        if drivers[0] is None:
            uname, passwd = urlopen("http://horel.org:8080/").readline().strip().split()
            vdisplay = Xvfb()
            vdisplay.start()
            driver = webdriver.Chrome()
            driver.get("https://facebook.com")
            driver.find_element_by_id("email").send_keys(uname)
            elem = driver.find_element_by_id("pass")
            elem.send_keys(passwd)
            elem.submit()
            drivers[0] = driver
        return drivers[0]

    def run(self, url):
        try:
            self.driver.get(url)
        except WebDriverException:
            return {"nfriends": 0, "for": url, "orig": ip}

        for i in xrange(20):
            try:
                box = self.driver.find_element_by_class_name("_1f8g")
            except (NoSuchElementException, ElementNotVisibleException):
                sleep(0.1)
            else:
                break
        else:
            try:
                self.driver.find_element_by_id("loginbutton")
            except NoSuchElementException:
                return {"nfriends": 0, "for": url, "orig": ip}
            else:
                return {"nfriends": None, "for": url, "orig": ip}

        soup = BeautifulSoup(box.get_attribute("outerHTML"))
        a = soup.find("a", class_="uiLinkSubtle")
        try:
            n_friends = int(a.string.replace(",", "").replace(".", "").replace(" ", "").encode("ascii", "ignore"))
        except ValueError:
            n_friends = a.string
            print n_friends
        return {"nfriends": n_friends,
                "for": url,
                "orig": ip}


class Likes(Task):

    @property
    def driver(self):
        if drivers[0] is None:
            uname, passwd = urlopen("http://horel.org:8080/").readline().strip().split()
            vdisplay = Xvfb()
            vdisplay.start()
            driver = webdriver.Chrome()
            driver.get("https://facebook.com")
            driver.find_element_by_id("email").send_keys(uname)
            elem = driver.find_element_by_id("pass")
            elem.send_keys(passwd)
            elem.submit()
            drivers[0] = driver
        return drivers[0]

    def run(self, url):
        try:
            self.driver.get(url)
        except WebDriverException:
            return {"likes": [], "for": url, "orig": ip}

        while True:
            for _ in xrange(5):
                try:
                    footer = self.driver.find_element_by_class_name("_359")
                except (NoSuchElementException, ElementNotVisibleException):
                    sleep(0.1)
                else:
                    break
            else:
                break

            try:
                self.driver.execute_script("window.scrollTo(0, document.body.scrollHeight);")
                footer.click()
            except StaleElementReferenceException:
                sleep(0.1)
            except WebDriverException:
                for _ in xrange(5):
                    try:
                        footer.click()
                    except (WebDriverException, StaleElementReferenceException):
                        sleep(0.1)
                    else:
                        break
                else:
                    break

        for _ in xrange(5):
            try:
                div = self.driver.find_element_by_class_name("_30f")
            except NoSuchElementException:
                sleep(0.1)
            else:
                break
        else:
            try:
                self.driver.find_element_by_id("loginbutton")
            except NoSuchElementException:
                return {"likes": "", "for": url, "orig": ip}
            else:
                return {"likes": None, "for": url, "orig": ip}

        def clean(a):
            for child in a.children:
                if type(child) == NavigableString:
                    return child
            else:
                return ""
            return ""

        soup = BeautifulSoup(div.get_attribute("outerHTML"))
        likes = [clean(li.find("a", class_="_gx7"))
                 for li in soup.findAll("li", class_="_5rz")]
        return {"likes": u"\t".join(likes).encode("utf8"),
                "for": url,
                "orig": ip}

if __name__ == "__main__":
    nf = Likes()
    with open("toto.txt", "w") as f:
        f.write( u"\t".join(nf.run("https://www.facebook.com/grvgaba29" +  "/video_tv_show_favorite")["likes"]).encode("utf8") + "\n")