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124 lines
5.0 KiB
124 lines
5.0 KiB
import time
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import requests
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import hashlib
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import os
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import re
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from inscriptis import get_text
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# Doesn't feel right having 'datastore' as a var here, perhaps this class can inherit from datastore/abstract
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# but on the other hand, I dont want a new instantiation of the that datastore object every time, due to it reading the
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# JSON store, setting vars, writing etc.
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class perform_site_check():
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def __init__(self, *args, uuid=False, datastore, **kwargs):
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super().__init__(*args, **kwargs)
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self.timestamp = int(time.time()) # used for storage etc too
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self.uuid = uuid
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self.datastore = datastore
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self.url = datastore.get_val(uuid, 'url')
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self.current_md5 = datastore.get_val(uuid, 'previous_md5')
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self.output_path = "/datastore/{}".format(self.uuid)
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self.ensure_output_path()
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self.run()
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def save_firefox_screenshot(self, uuid, output):
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# @todo call selenium or whatever
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return
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def ensure_output_path(self):
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try:
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os.stat(self.output_path)
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except:
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os.mkdir(self.output_path)
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def save_response_html_output(self, output):
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# @todo maybe record a history.json, [timestamp, md5, filename]
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with open("{}/{}.txt".format(self.output_path, self.timestamp), 'w') as f:
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f.write(output)
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f.close()
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def save_response_stripped_output(self, output):
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fname = "{}/{}.stripped.txt".format(self.output_path, self.timestamp)
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with open(fname, 'w') as f:
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f.write(output)
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f.close()
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return fname
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def run(self):
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extra_headers = self.datastore.get_val(self.uuid, 'headers')
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# Tweak the base config with the per-watch ones
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request_headers = self.datastore.data['settings']['headers'].copy()
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request_headers.update(extra_headers)
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# https://github.com/psf/requests/issues/4525
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# Requests doesnt yet support brotli encoding, so don't put 'br' here, be totally sure that the user cannot
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# do this by accident.
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if 'Accept-Encoding' in request_headers and "br" in request_headers['Accept-Encoding']:
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request_headers['Accept-Encoding'] = request_headers['Accept-Encoding'].replace(', br', '')
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print("Checking", self.url)
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try:
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timeout = self.datastore.data['settings']['requests']['timeout']
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except KeyError:
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# @todo yeah this should go back to the default value in store.py, but this whole object should abstract off it
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timeout = 15
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try:
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r = requests.get(self.url,
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headers=request_headers,
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timeout=timeout,
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verify=False)
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stripped_text_from_html = get_text(r.text)
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# Usually from networkIO/requests level
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except (requests.exceptions.ConnectionError, requests.exceptions.ReadTimeout) as e:
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self.datastore.update_watch(self.uuid, 'last_error', str(e))
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print(str(e))
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except requests.exceptions.MissingSchema:
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print("Skipping {} due to missing schema/bad url".format(self.uuid))
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# Usually from html2text level
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except UnicodeDecodeError as e:
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self.datastore.update_watch(self.uuid, 'last_error', str(e))
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print(str(e))
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# figure out how to deal with this cleaner..
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# 'utf-8' codec can't decode byte 0xe9 in position 480: invalid continuation byte
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else:
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# We rely on the actual text in the html output.. many sites have random script vars etc
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self.datastore.update_watch(self.uuid, 'last_error', False)
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self.datastore.update_watch(self.uuid, 'last_check_status', r.status_code)
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fetched_md5 = hashlib.md5(stripped_text_from_html.encode('utf-8')).hexdigest()
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if self.current_md5 != fetched_md5:
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# Dont confuse people by putting last-changed, when it actually just changed from nothing..
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if self.datastore.get_val(self.uuid, 'previous_md5') is not None:
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self.datastore.update_watch(self.uuid, 'last_changed', self.timestamp)
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self.datastore.update_watch(self.uuid, 'previous_md5', fetched_md5)
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self.save_response_html_output(r.text)
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output_filepath = self.save_response_stripped_output(stripped_text_from_html)
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# Update history with the stripped text for future reference, this will also mean we save the first
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# attempt because 'self.current_md5 != fetched_md5' (current_md5 will be None when not run)
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# need to learn more about attr/setters/getters
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history = self.datastore.get_val(self.uuid, 'history')
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history.update(dict([(str(self.timestamp), output_filepath)]))
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self.datastore.update_watch(self.uuid, 'history', history)
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self.datastore.update_watch(self.uuid, 'last_checked', int(time.time()))
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pass
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