mirror of
https://github.com/janeczku/calibre-web
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29 lines
801 B
Python
29 lines
801 B
Python
# http://flask.pocoo.org/snippets/62/
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try:
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from urllib.parse import urlparse, urljoin
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except ImportError:
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from urlparse import urlparse, urljoin
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from flask import request, url_for, redirect
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def is_safe_url(target):
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ref_url = urlparse(request.host_url)
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test_url = urlparse(urljoin(request.host_url, target))
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return test_url.scheme in ('http', 'https') and ref_url.netloc == test_url.netloc
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def get_redirect_target():
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for target in request.values.get('next'), request.referrer:
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if not target:
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continue
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if is_safe_url(target):
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return target
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def redirect_back(endpoint, **values):
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target = request.form['next']
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if not target or not is_safe_url(target):
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target = url_for(endpoint, **values)
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return redirect(target)
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