Slider validation code

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The import module

from selenium import webdriver
from selenium.webdriver import ActionChains
from selenium.webdriver.common.by import By
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.support.wait import WebDriverWait
from PIL import Image
import time

def get_snap(driver):
driver.save_screenshot(‘full_snap.png’)
page_snap_obj = Image.open(‘full_snap.png’)
return page_snap_obj

def get_image(driver):
img = driver.find_element_by_class_name(‘geetest_canvas_img’)
time.sleep(2)
location = img.location
size = img.size
print(size)

left = location['x']
top = location['y']
right = left+size['width']
bottom = top+size['height']

page_snap_obj = get_snap(driver)
image_obj = page_snap_obj.crop((left, top, right, bottom))
# image_obj.show()
return image_obj

def get_distance(image1, image2):
start = 57
threhold = 60

for i in range(start, image1.size[0]):
    for j in range(image1.size[1]):
        rgb1 = image1.load()[i, j]
        rgb2 = image2.load()[i, j]
        res1 = abs(rgb1[0]-rgb2[0])
        res2 = abs(rgb1[1]-rgb2[1])
        res3 = abs(rgb1[2]-rgb2[2])
        # print(res1,res2,res3)
        if not (res1 <threhold and res2 <threhold and res3 < threhold):
            return i - 7
return i - 7

def get_tracks(distance):
distance += 20 # Slide a little bit , And finally slide back
v = 0
t = 0.2
forward_tracks = []

current = 0
mid = distance * 3 / 5
while current < distance:
    if current < mid:
        a = 2
    else:
        a = -3

    s = v * t + 0.5 * a * (t**2)
    v = v + a * t
    current += s
    forward_tracks.append(round(s))

#  Slide backwards to the exact position 
back_tracks = [-1, -1, -1, -2, -3, -2, -2, -2, -2, -1, -1, -1]  #  The total is equal to  -20

return {'forward_tracks':forward_tracks, 'back_tracks':back_tracks}

def crack(driver): # Crack sliding authentication
# 1. Click button , Get a picture with no gaps
button = driver.find_element_by_class_name(‘geetest_radar_tip’)
button.click()

# 2. Get pictures without gaps 
image1 = get_image(driver)

# 3. Click the slide button , Get a picture with a gap 
button = driver.find_element_by_class_name('geetest_slider_button')
button.click()

# 4. Get pictures with gaps 
image2 = get_image(driver)

# 5. Compare the pixels of the two pictures , Find the displacement 
distance = get_distance(image1, image2)

# 6. Simulate people's behavior habits , The behavior trace obtained from the total displacement 
tracks = get_tracks(distance)
print(tracks)

# 7. First slide forward according to the human action track , Rear reverse slide 
button = driver.find_element_by_class_name('geetest_slider_button')
ActionChains(driver).click_and_hold(button).perform()

#  Normal humans always start sliding forward with confidence , The expression of self-confidence is crazy acceleration 
for track in tracks['forward_tracks']:
    ActionChains(driver).move_by_offset(xoffset=track, yoffset=0).perform()

#  It turned out to be stupid , A normal human pauses , Come to your senses and find , Oh my god , It slipped , Then start sliding in the opposite direction 
time.sleep(0.3)
for back_track in tracks['back_tracks']:
    ActionChains(driver).move_by_offset(xoffset=back_track, yoffset=0).perform()

#  A small shock ,  Further confuse the background of the extreme experience ,  This step can greatly improve the success rate 
time.sleep(0.1)
ActionChains(driver).move_by_offset(xoffset=-3, yoffset=0).perform()
ActionChains(driver).move_by_offset(xoffset=3, yoffset=0).perform()

#  After success , People like to enjoy the results of their puzzles in silence , Then reluctantly release the dirty hand 
time.sleep(0.5)
ActionChains(driver).release().perform()

def login_cnblogs(username,password):
driver = webdriver.Chrome()
try:
# 1、 Enter the account and password and press enter
driver.implicitly_wait(3)
driver.get(‘https://passport.cnblogs.com/user/signin’)

    input_username = driver.find_element_by_id('input1')
    input_pwd = driver.find_element_by_id('input2')
    signin = driver.find_element_by_id('signin')

    input_username.send_keys(username)
    input_pwd.send_keys(password)
    signin.click()

    # 2、 Crack sliding authentication 
    crack(driver)

    time.sleep(10)  #  Sleep longer , Confirm that the login is successful 
finally:
    driver.close()

if name == ‘main’:
login_cnblogs(username=‘aaaaa’,password=‘aaaaa’)