1 # Fedi API Block - An aggregator for fetching blocking data from fediverse nodes
2 # Copyright (C) 2023 Free Software Foundation
4 # This program is free software: you can redistribute it and/or modify
5 # it under the terms of the GNU Affero General Public License as published
6 # by the Free Software Foundation, either version 3 of the License, or
7 # (at your option) any later version.
9 # This program is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 # GNU Affero General Public License for more details.
14 # You should have received a copy of the GNU Affero General Public License
15 # along with this program. If not, see <https://www.gnu.org/licenses/>.
21 from fba import database
24 from fba.helpers import config
25 from fba.helpers import domain as domain_helper
26 from fba.helpers import tidyup
28 from fba.http import federation
29 from fba.http import network
31 from fba.models import instances
33 logging.basicConfig(level=logging.INFO)
34 logger = logging.getLogger(__name__)
36 # Language mapping X -> English
39 "Reject": "Suspended servers",
42 def fetch_blocks(domain: str, nodeinfo_url: str) -> list:
43 logger.debug("domain='%s',nodeinfo_url='%s' - CALLED!", domain, nodeinfo_url)
44 domain_helper.raise_on(domain)
46 if not isinstance(nodeinfo_url, str):
47 raise ValueError(f"Parameter nodeinfo_url[]='{type(nodeinfo_url)}' is not 'str'")
48 elif nodeinfo_url == "":
49 raise ValueError("Parameter 'nodeinfo_url' is empty")
54 logger.debug("Fetching nodeinfo: domain='%s',nodeinfo_url='%s'", domain, nodeinfo_url)
55 rows = federation.fetch_nodeinfo(domain, nodeinfo_url)
56 except network.exceptions as exception:
57 logger.warning("Exception '%s' during fetching nodeinfo from domain='%s'", type(exception), domain)
58 instances.set_last_error(domain, exception)
61 logger.warning("Could not fetch nodeinfo from domain='%s'", domain)
63 elif "metadata" not in rows:
64 logger.warning("rows()=%d does not have key 'metadata', domain='%s'", len(rows), domain)
66 elif "federation" not in rows["metadata"]:
67 logger.warning("rows()=%d does not have key 'federation', domain='%s'", len(rows['metadata']), domain)
70 data = rows["metadata"]["federation"]
73 logger.debug("data[]='%s'", type(data))
74 if "mrf_simple" in data:
75 logger.debug("Found mrf_simple in API response from domain='%s'", domain)
77 for block_level, blocklist in (
81 "quarantined_instances": data["quarantined_instances"]
85 logger.debug("block_level='%s', blocklist()=%d", block_level, len(blocklist))
86 block_level = tidyup.domain(block_level)
87 logger.debug("block_level='%s' - AFTER!", block_level)
90 logger.warning("block_level is now empty!")
92 elif block_level == "accept":
93 logger.debug("domain='%s' skipping block_level='accept'", domain)
95 elif block_level == "suspend":
96 logger.debug("domain='%s', mapping 'suspend' to 'suspended'", domain)
97 block_level = "suspended"
98 elif block_level == "silence":
99 logger.debug("domain='%s', mapping 'silence' to 'silenced'", domain)
100 block_level = "silenced"
102 logger.debug("Checking %d entries from domain='%s',block_level='%s' ...", len(blocklist), domain, block_level)
103 if len(blocklist) > 0:
104 for blocked in blocklist:
105 logger.debug("blocked='%s' - BEFORE!", blocked)
106 blocked = tidyup.domain(blocked)
107 logger.debug("blocked='%s' - AFTER!", blocked)
110 logger.warning("blocked is empty after tidyup.domain(): domain='%s',block_level='%s'", domain, block_level)
112 elif blocked.endswith(".arpa"):
113 logger.debug("blocked='%s' is a reverse IP address - SKIPPED!", blocked)
115 elif blocked.endswith(".tld"):
116 logger.debug("blocked='%s' is a fake domain - SKIPPED!", blocked)
118 elif blocked.count("*") > 0:
119 logger.debug("domain='%s' uses obfuscated domains, marking ...", domain)
120 instances.set_has_obfuscation(domain, True)
122 # Obscured domain name with no hash
123 row = instances.deobfuscate("*", blocked)
125 logger.debug("row[]='%s'", type(row))
127 logger.warning("Cannot deobfuscate blocked='%s',domain='%s' - SKIPPED!", blocked, domain)
130 logger.debug("blocked='%s' de-obscured to '%s'", blocked, row[0])
132 elif blocked.count("?") > 0:
133 logger.debug("domain='%s' uses obfuscated domains, marking ...", domain)
134 instances.set_has_obfuscation(domain, True)
136 # Obscured domain name with no hash
137 row = instances.deobfuscate("?", blocked)
139 logger.debug("row[]='%s'", type(row))
141 logger.warning("Cannot deobfuscate blocked='%s',domain='%s' - SKIPPED!", blocked, domain)
144 logger.debug("blocked='%s' de-obscured to '%s'", blocked, row[0])
147 logger.debug("blocked='%s'", blocked)
148 if not utils.is_domain_wanted(blocked):
149 logger.debug("blocked='%s' is not wanted - SKIPPED!", blocked)
152 logger.debug("Appending blocker='%s',blocked='%s',block_level='%s' ...", domain, blocked, block_level)
157 "block_level": block_level,
160 elif "quarantined_instances" in data:
161 logger.debug("Found 'quarantined_instances' in JSON response: domain='%s'", domain)
163 block_level = "quarantined"
165 for blocked in data["quarantined_instances"]:
166 logger.debug("blocked='%s' - BEFORE!", blocked)
167 blocked = tidyup.domain(blocked)
168 logger.debug("blocked='%s' - AFTER!", blocked)
171 logger.warning("blocked is empty after tidyup.domain(): domain='%s',block_level='%s'", domain, block_level)
173 elif blocked.endswith(".arpa"):
174 logger.debug("blocked='%s' is a reverse IP address - SKIPPED!", blocked)
176 elif blocked.endswith(".tld"):
177 logger.debug("blocked='%s' is a fake domain - SKIPPED!", blocked)
179 elif blocked.count("*") > 0:
180 logger.debug("domain='%s' uses obfuscated domains, marking ...", domain)
181 instances.set_has_obfuscation(domain, True)
183 # Obscured domain name with no hash
184 row = instances.deobfuscate("*", blocked)
186 logger.debug("row[]='%s'", type(row))
188 logger.warning("Cannot deobfuscate blocked='%s',domain='%s' - SKIPPED!", blocked, domain)
191 logger.debug("blocked='%s' de-obscured to '%s'", blocked, row[0])
193 elif blocked.count("?") > 0:
194 logger.debug("domain='%s' uses obfuscated domains, marking ...", domain)
195 instances.set_has_obfuscation(domain, True)
197 # Obscured domain name with no hash
198 row = instances.deobfuscate("?", blocked)
200 logger.debug("row[]='%s'", type(row))
202 logger.warning("Cannot deobfuscate blocked='%s',domain='%s' - SKIPPED!", blocked, domain)
205 logger.debug("blocked='%s' de-obscured to '%s'", blocked, row[0])
208 logger.debug("blocked='%s' - DEOBFUSCATED!", blocked)
209 if not utils.is_domain_wanted(blocked):
210 logger.debug("blocked='%s' is not wanted - SKIPPED!", blocked)
213 logger.debug("Appending blocker='%s',blocked='%s',block_level='%s' ...", domain, blocked, block_level)
218 "block_level": block_level,
222 logger.warning("Cannot find 'mrf_simple' or 'quarantined_instances' in JSON reply: domain='%s'", domain)
224 logger.debug("Invoking commit() ...")
225 database.connection.commit()
228 if "mrf_simple_info" in data:
229 logger.debug("Found mrf_simple_info in API response: domain='%s'", domain)
231 for block_level, info in (
233 **data["mrf_simple_info"],
234 **(data["quarantined_instances_info"] if "quarantined_instances_info" in data else {})
237 logger.debug("block_level='%s', info.items()=%d", block_level, len(info.items()))
238 block_level = tidyup.domain(block_level)
239 logger.debug("block_level='%s' - AFTER!", block_level)
241 if block_level == "":
242 logger.warning("block_level is now empty!")
244 elif block_level == "accept":
245 logger.debug("domain='%s' skipping block_level='accept'", domain)
247 elif block_level == "suspend":
248 logger.debug("domain='%s', mapping 'suspend' to 'suspended'", domain)
249 block_level = "suspended"
250 elif block_level == "silence":
251 logger.debug("domain='%s', mapping 'silence' to 'silenced'", domain)
252 block_level = "silenced"
254 logger.debug("Checking %d entries from domain='%s',block_level='%s' ...", len(info.items()), domain, block_level)
255 for blocked, reason in info.items():
256 logger.debug("blocked='%s',reason[%s]='%s' - BEFORE!", blocked, type(reason), reason)
257 blocked = tidyup.domain(blocked)
258 logger.debug("blocked='%s' - AFTER!", blocked)
260 if isinstance(reason, str):
261 logger.debug("reason[] is a string")
262 reason = tidyup.reason(reason)
263 elif isinstance(reason, dict) and "reason" in reason:
264 logger.debug("reason[] is a dict")
265 reason = tidyup.reason(reason["reason"])
266 elif reason is not None:
267 raise ValueError(f"Cannot handle reason[]='{type(reason)}'")
269 logger.debug("blocked='%s',reason='%s' - AFTER!", blocked, reason)
272 logger.warning("blocked is empty after tidyup.domain(): domain='%s',block_level='%s'", domain, block_level)
274 elif blocked.count("*") > 0:
275 logger.debug("domain='%s' uses obfuscated domains, marking ...", domain)
276 instances.set_has_obfuscation(domain, True)
278 # Obscured domain name with no hash
279 row = instances.deobfuscate("*", blocked)
281 logger.debug("row[]='%s'", type(row))
283 logger.warning("Cannot deobfuscate blocked='%s',domain='%s' - SKIPPED!", blocked, domain)
286 logger.debug("blocked='%s' de-obscured to '%s'", blocked, row[0])
288 elif blocked.count("?") > 0:
289 logger.debug("domain='%s' uses obfuscated domains, marking ...", domain)
290 instances.set_has_obfuscation(domain, True)
292 # Obscured domain name with no hash
293 row = instances.deobfuscate("?", blocked)
295 logger.debug("row[]='%s'", type(row))
297 logger.warning("Cannot deobfuscate blocked='%s',domain='%s' - SKIPPED!", blocked, domain)
300 logger.debug("blocked='%s' de-obscured to '%s'", blocked, row[0])
303 logger.debug("blocked='%s' - DEOBFUSCATED!", blocked)
304 if not utils.is_domain_wanted(blocked):
305 logger.debug("blocked='%s' is not wanted - SKIPPED!", blocked)
308 logger.debug("Checking %d blockdict records ...", len(blockdict))
309 for block in blockdict:
310 logger.debug("block[blocked]='%s',blocked='%s'", block['blocked'], blocked)
311 if block['blocked'] == blocked:
312 logger.debug("Updating reason='%s' for blocker='%s'", reason, block['blocked'])
313 block['reason'] = reason
315 elif "quarantined_instances_info" in data and "quarantined_instances" in data["quarantined_instances_info"]:
316 logger.debug("Found 'quarantined_instances_info' in JSON response: domain='%s'", domain)
318 block_level = "quarantined"
320 #print(data["quarantined_instances_info"])
321 rows = data["quarantined_instances_info"]["quarantined_instances"]
323 logger.debug("blocked='%s' - BEFORE!", blocked)
324 blocked = tidyup.domain(blocked)
325 logger.debug("blocked='%s' - AFTER!", blocked)
327 if blocked not in rows or "reason" not in rows[blocked]:
328 logger.warning("Cannot find blocked='%s' in rows()=%d,domain='%s' - BREAK!", blocked, len(rows), domain)
331 reason = rows[blocked]["reason"]
332 logger.debug("reason='%s'", reason)
335 logger.warning("blocked is empty after tidyup.domain(): domain='%s',block_level='%s'", domain, block_level)
337 elif blocked.count("*") > 0:
338 logger.debug("domain='%s' uses obfuscated domains, marking ...", domain)
339 instances.set_has_obfuscation(domain, True)
341 # Obscured domain name with no hash
342 row = instances.deobfuscate("*", blocked)
344 logger.debug("row[]='%s'", type(row))
346 logger.warning("Cannot deobfuscate blocked='%s',domain='%s' - SKIPPED!", blocked, domain)
349 logger.debug("blocked='%s' de-obscured to '%s'", blocked, row[0])
351 elif blocked.count("?") > 0:
352 logger.debug("domain='%s' uses obfuscated domains, marking ...", domain)
353 instances.set_has_obfuscation(domain, True)
355 # Obscured domain name with no hash
356 row = instances.deobfuscate("?", blocked)
358 logger.debug("row[]='%s'", type(row))
360 logger.warning("Cannot deobfuscate blocked='%s',domain='%s' - SKIPPED!", blocked, domain)
363 logger.debug("blocked='%s' de-obscured to '%s'", blocked, row[0])
366 logger.debug("blocked='%s'", blocked)
367 if not utils.is_domain_wanted(blocked):
368 logger.debug("blocked='%s' is not wanted - SKIPPED!", blocked)
371 logger.debug("Checking %d blockdict records ...", len(blockdict))
372 for block in blockdict:
373 logger.debug("block[blocked]='%s',blocked='%s'", block['blocked'], blocked)
374 if block['blocked'] == blocked:
375 logger.debug("Updating reason='%s' for blocker='%s'", reason, block['blocked'])
376 block['reason'] = reason
378 logger.warning("Cannot find 'mrf_simple_info' or 'quarantined_instances_info' in JSON reply: domain='%s'", domain)
381 logger.debug("Did not find any useable JSON elements, domain='%s', continuing with /about page ...", domain)
382 blocklist = fetch_blocks_from_about(domain)
384 logger.debug("blocklist()=%d", len(blocklist))
385 if len(blocklist) > 0:
386 logger.info("Checking %d record(s) ...", len(blocklist))
387 for block_level in blocklist:
388 logger.debug("block_level='%s'", block_level)
390 rows = blocklist[block_level]
391 logger.debug("rows[%s]()=%d'", type(rows), len(rows))
393 logger.debug("record[]='%s'", type(record))
394 blocked = tidyup.domain(record["blocked"])
395 reason = tidyup.reason(record["reason"])
396 logger.debug("blocked='%s',reason='%s' - AFTER!", blocked, reason)
399 logger.warning("blocked is empty after tidyup.domain(): domain='%s',block_level='%s'", domain, block_level)
401 elif blocked.count("*") > 0:
402 logger.debug("domain='%s' uses obfuscated domains, marking ...", domain)
403 instances.set_has_obfuscation(domain, True)
405 # Obscured domain name with no hash
406 row = instances.deobfuscate("*", blocked)
408 logger.debug("row[]='%s'", type(row))
410 logger.warning("Cannot deobfuscate blocked='%s',domain='%s' - SKIPPED!", blocked, domain)
413 logger.debug("blocked='%s' de-obscured to '%s'", blocked, row[0])
415 elif blocked.count("?") > 0:
416 logger.debug("domain='%s' uses obfuscated domains, marking ...", domain)
417 instances.set_has_obfuscation(domain, True)
419 # Obscured domain name with no hash
420 row = instances.deobfuscate("?", blocked)
422 logger.debug("row[]='%s'", type(row))
424 logger.warning("Cannot deobfuscate blocked='%s',domain='%s' - SKIPPED!", blocked, domain)
427 logger.debug("blocked='%s' de-obscured to '%s'", blocked, row[0])
430 logger.debug("blocked='%s' - DEOBFUSCATED!", blocked)
431 if not utils.is_domain_wanted(blocked):
432 logger.warning("blocked='%s' is not wanted - SKIPPED!", blocked)
435 logger.debug("Appending blocker='%s',blocked='%s',reason='%s',block_level='%s' ...",domain, blocked, reason, block_level)
440 "block_level": block_level,
443 logger.debug("blockdict()=%d - EXIT!", len(blockdict))
446 def fetch_blocks_from_about(domain: str) -> dict:
447 logger.debug("domain='%s' - CALLED!", domain)
448 domain_helper.raise_on(domain)
450 logger.debug("Fetching mastodon blocks from domain='%s'", domain)
452 for path in ["/instance/about/index.html"]:
457 logger.debug("Fetching path='%s' from domain='%s' ...", path, domain)
458 response = network.fetch_response(
462 (config.get("connection_timeout"), config.get("read_timeout"))
465 logger.debug("response.ok='%s',response.status_code='%d',response.text()=%d", response.ok, response.status_code, len(response.text))
466 if not response.ok or response.text.strip() == "":
467 logger.warning("path='%s' does not exist on domain='%s' - SKIPPED!", path, domain)
470 logger.debug("Parsing response.text()=%d Bytes ...", len(response.text))
471 doc = bs4.BeautifulSoup(
476 logger.debug("doc[]='%s'", type(doc))
477 if doc.find("h2") is not None:
478 logger.debug("Found 'h2' header in path='%s' - BREAK!", path)
481 except network.exceptions as exception:
482 logger.warning("Cannot fetch from domain='%s',exception[%s]='%s'", domain, type(exception), str(exception))
483 instances.set_last_error(domain, exception)
487 "Suspended servers": [],
488 "Filtered media" : [],
489 "Limited servers" : [],
490 "Silenced servers" : [],
493 logger.debug("doc[]='%s'", type(doc))
495 logger.warning("Cannot fetch any /about pages for domain='%s' - EXIT!", domain)
498 for header in doc.find_all("h2"):
499 header_text = tidyup.reason(header.text)
501 logger.debug("header_text='%s' - BEFORE!", header_text)
502 if header_text in language_mapping:
503 logger.debug("header_text='%s' - FOUND!", header_text)
504 header_text = language_mapping[header_text]
506 logger.warning("header_text='%s' not found in language mapping table", header_text)
508 logger.debug("header_text='%s - AFTER!'", header_text)
509 if header_text in blocklist or header_text.lower() in blocklist:
510 # replaced find_next_siblings with find_all_next to account for instances that e.g. hide lists in dropdown menu
511 logger.debug("Found header_text='%s', importing domain blocks ...", header_text)
512 for line in header.find_next("table").find_all("tr")[1:]:
513 logger.debug("line[]='%s'", type(line))
514 blocklist[header_text].append({
515 "blocked": tidyup.domain(line.find_all("td")[0].text),
516 "reason" : tidyup.reason(line.find_all("td")[1].text),
519 logger.warning("header_text='%s' not found in blocklist()=%d", header_text, len(blocklist))
521 logger.debug("Returning blocklist for domain='%s' - EXIT!", domain)
523 "reject" : blocklist["Suspended servers"],
524 "media_removal" : blocklist["Filtered media"],
525 "followers_only": blocklist["Limited servers"] + blocklist["Silenced servers"],