def search_post():
"""Handle form submit."""
try:
post_data = flask.request.form['domains']
except KeyError:
app.logger.info(
'Missing "domains" key from POST: {}'.format(flask.request.form)
)
return flask.redirect('/error/2')
if post_data is None or post_data.strip() == '':
app.logger.info(
'No data in "domains" key in POST'
)
return flask.redirect('/error/2')
# We currently don't support Unicode in searches.
try:
post_data.decode('ascii')
except UnicodeEncodeError:
app.logger.info(
'Unicode search requested'
)
return flask.redirect('/error/3')
search_domains = tools.parse_post_data(post_data)
valid_domains = sorted(list(set(filter(None, map(tools.parse_domain, search_domains)))))
if len(valid_domains) == 0:
app.logger.info(
'No valid domains in POST {}'.format(flask.request.form)
)
suggestion = tools.suggest_domain(search_domains)
if suggestion is not None:
encoded_suggestion = binascii.hexlify(suggestion)
return flask.redirect(
'/error/0?suggestion={}'.format(encoded_suggestion)
)
return flask.redirect('/error/0')
# Attempt to create a <= 200 character GET parameter from the domains so
# we can redirect to that (allows bookmarking). As in '/api/analysis/ip'
# we use hex to hide the domains from firewalls that already block some of
# them.
path = ','.join(map(binascii.hexlify, search_domains))
if len(path) <= 200:
return flask.redirect('/search/{}'.format(path))
# If there's a ton of domains, just to the report.
return html_render(search_domains)
def search(search_domains, fmt=None):
"""Handle redirect from form submit."""
# We currently don't support Unicode in searches.
try:
search_domains.decode('ascii')
except UnicodeEncodeError:
app.logger.info(
'Unicode search requested'
)
return flask.redirect('/error/3')
# Try to parse out the list of domains
try:
valid_domains = sorted(list(set(filter(None, map(
tools.parse_domain, search_domains.split(',')
)))))
except:
app.logger.info('Unable to decode valid domains from path')
return flask.redirect('/error/0')
if len(valid_domains) == 0:
app.logger.info(
'No valid domains in GET'
)
suggestion = tools.suggest_domain(search_domains.split(','))
if suggestion is not None:
encoded_suggestion = binascii.hexlify(suggestion)
return flask.redirect(
'/error/0?suggestion={}'.format(encoded_suggestion)
)
return flask.redirect('/error/0')
if fmt is None:
return html_render(valid_domains, search_domains)
elif fmt == 'json':
return json_render(valid_domains)
elif fmt == 'csv':
return csv_render(valid_domains)
else:
flask.abort(400, 'Unknown export format: {}'.format(fmt))
def handle_invalid_domain(search_term_as_hex):
"""Called when no valid domain found in GET param, creates a suggestion
to return to the user.
"""
decoded_search = None
try:
decoded_search = bytes.fromhex(search_term_as_hex).decode('ascii')
except:
pass
if decoded_search is not None:
suggestion = tools.suggest_domain(decoded_search)
if suggestion is not None:
app.logger.info(
'Not a valid domain in GET: {}, suggesting: {}'.format(
search_term_as_hex, suggestion))
return flask.redirect('/error/0?suggestion={}'.format(
Domain(suggestion).to_hex()))
app.logger.info('Not a valid domain in GET: {}'.format(search_term_as_hex))
return flask.redirect('/error/0')