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70 lines
2.6 KiB
Python
70 lines
2.6 KiB
Python
"""
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Recaptcha is a free captcha service offered by Google in order to secure websites and
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forms. At https://www.google.com/recaptcha/admin/create you can create new recaptcha
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keys and see the keys that your have already created.
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* Keep in mind that recaptcha doesn't work with localhost
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When you create a recaptcha key, your will get two separate keys: ClientKey & SecretKey.
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ClientKey should be kept in your site's front end
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SecretKey should be kept in your site's back end
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# An example HTML login form with recaptcha tag is shown below
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<form action="" method="post">
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<h2 class="text-center">Log in</h2>
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{% csrf_token %}
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<div class="form-group">
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<input type="text" name="username" required="required">
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</div>
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<div class="form-group">
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<input type="password" name="password" required="required">
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</div>
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<div class="form-group">
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<button type="submit">Log in</button>
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</div>
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<!-- Below is the recaptcha tag of html -->
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<div class="g-recaptcha" data-sitekey="ClientKey"></div>
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</form>
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<!-- Below is the recaptcha script to be kept inside html tag -->
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<script src="https://www.google.com/recaptcha/api.js" async defer></script>
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Below a Django function for the views.py file contains a login form for demonstrating
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recaptcha verification.
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"""
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import requests
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try:
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from django.contrib.auth import authenticate, login
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from django.shortcuts import redirect, render
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except ImportError:
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authenticate = login = render = redirect = print
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def login_using_recaptcha(request):
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# Enter your recaptcha secret key here
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secret_key = "secretKey" # noqa: S105
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url = "https://www.google.com/recaptcha/api/siteverify"
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# when method is not POST, direct user to login page
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if request.method != "POST":
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return render(request, "login.html")
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# from the frontend, get username, password, and client_key
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username = request.POST.get("username")
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password = request.POST.get("password")
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client_key = request.POST.get("g-recaptcha-response")
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# post recaptcha response to Google's recaptcha api
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response = requests.post(
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url, data={"secret": secret_key, "response": client_key}, timeout=10
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)
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# if the recaptcha api verified our keys
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if response.json().get("success", False):
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# authenticate the user
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user_in_database = authenticate(request, username=username, password=password)
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if user_in_database:
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login(request, user_in_database)
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return redirect("/your-webpage")
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return render(request, "login.html")
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