added recaptcha verification (#79)

CDC_Backend/APIs/companyViews.py

@@ -16,14 +16,15 @@ logger = logging.getLogger('db')
            IS_COMPENSATION_DETAILS_PDF,
            ALLOWED_BRANCH, SELECTION_PROCEDURE_ROUNDS, SELECTION_PROCEDURE_DETAILS, IS_SELECTION_PROCEDURE_DETAILS_PDF,
            TENTATIVE_DATE_OF_JOINING,
-           TENTATIVE_NO_OF_OFFERS, OTHER_REQUIREMENTS
+           TENTATIVE_NO_OF_OFFERS, OTHER_REQUIREMENTS, RECAPTCHA_VALUE 
            ])
 def addPlacement(request):
     try:
         data = request.data
         files = request.FILES
         opening = Placement()
-
+        if not verify_recaptcha(data[RECAPTCHA_VALUE]):
+            raise Exception("Recaptcha Failed")
         opening.id = generateRandomString()
         # Add a company details in the opening
         opening.company_name = data[COMPANY_NAME]

CDC_Backend/APIs/constants.py

@@ -117,6 +117,7 @@ OTHER_REQUIREMENTS = 'other_requirements'
 DEADLINE_DATETIME = 'deadline_datetime'
 OFFER_ACCEPTED = 'offer_accepted'
 EMAIL_VERIFIED = 'email_verified'
+RECAPTCHA_VALUE = 'recaptchakey'
 
 STUDENT_LIST = "student_list"
 STUDENT_ID = "student_id"

CDC_Backend/APIs/utils.py

@@ -19,6 +19,7 @@ from google.auth.transport import requests
 from google.oauth2 import id_token
 from rest_framework import status
 from rest_framework.response import Response
+import requests as rq
 
 from .constants import *
 from .models import User, PrePlacementOffer, PlacementApplication
@@ -233,3 +234,18 @@ def generateOneTimeVerificationLink(email, opening_id, opening_type):
         print(sys.exc_info())
         logger.warning("Utils - generateOneTimeVerificationLink: " + str(sys.exc_info()))
         return False, "_"
+
+def verify_recaptcha(request):
+    try:
+        data = {
+            'secret': settings.RECAPTCHA_SECRET_KEY,
+            'response': request
+        }
+        r = rq.post('https://www.google.com/recaptcha/api/siteverify', data=data)
+        result = r.json()
+        # logger.info("Recaptcha Response: " + str(result)+"request: "+str(data))
+        return result['success']
+    except:
+        print(sys.exc_info())
+        logger.warning("Utils - verify_recaptcha: " + str(sys.exc_info()))
+        return False, "_"

CDC_Backend/CDC_Backend/settings.py

@@ -161,6 +161,8 @@ EMAIL_PORT = 587
 EMAIL_HOST_USER = os.environ.get("EMAIL")  # 'email here'
 EMAIL_HOST_PASSWORD = os.environ.get("EMAIL_PASSWORD")  # 'password here'
 
+RECAPTCHA_SECRET_KEY = os.environ.get("RECAPTCHA_SECRET_KEY")
+
 LOGGING = {
     'version': 1,
     'disable_existing_loggers': False,