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/>.
23 from fba import database
26 from fba.helpers import blacklist
27 from fba.helpers import config
28 from fba.helpers import domain as domain_helper
29 from fba.helpers import tidyup
31 from fba.http import network
33 from fba.models import blocks
34 from fba.models import instances
36 logging.basicConfig(level=logging.INFO)
37 logger = logging.getLogger(__name__)
39 # Language mapping X -> English
42 "Silenced instances" : "Silenced servers",
43 "Suspended instances" : "Suspended servers",
44 "Limited instances" : "Limited servers",
45 "Filtered media" : "Filtered media",
46 # Mappuing German -> English
47 "Gesperrte Server" : "Suspended servers",
48 "Gefilterte Medien" : "Filtered media",
49 "Stummgeschaltete Server" : "Silenced servers",
51 "停止済みのサーバー" : "Suspended servers",
52 "制限中のサーバー" : "Limited servers",
53 "メディアを拒否しているサーバー": "Filtered media",
54 "サイレンス済みのサーバー" : "Silenced servers",
56 "שרתים מושעים" : "Suspended servers",
57 "מדיה מסוננת" : "Filtered media",
58 "שרתים מוגבלים" : "Silenced servers",
60 "Serveurs suspendus" : "Suspended servers",
61 "Médias filtrés" : "Filtered media",
62 "Serveurs limités" : "Limited servers",
63 "Serveurs modérés" : "Limited servers",
66 def fetch_blocks_from_about(domain: str) -> dict:
67 logger.debug("domain(%d)='%s' - CALLED!", len(domain), domain)
68 domain_helper.raise_on(domain)
70 logger.debug("Fetching mastodon blocks from domain='%s'", domain)
72 for path in ["/about/more", "/about"]:
74 logger.debug(f"Fetching path='{path}' from domain='{domain}' ...")
75 doc = bs4.BeautifulSoup(
76 network.fetch_response(
80 (config.get("connection_timeout"), config.get("read_timeout"))
85 if len(doc.find_all("h3")) > 0:
86 logger.debug(f"path='{path}' had some headlines - BREAK!")
89 except network.exceptions as exception:
90 logger.warning("Cannot fetch from domain='%s',exception='%s'", domain, type(exception))
91 instances.set_last_error(domain, exception)
95 "Suspended servers": [],
96 "Filtered media" : [],
97 "Limited servers" : [],
98 "Silenced servers" : [],
101 logger.debug("doc[]='%s'", type(doc))
103 logger.warning("Cannot fetch any /about pages for domain='%s' - EXIT!", domain)
106 for header in doc.find_all("h3"):
107 header_text = tidyup.reason(header.text)
109 logger.debug("header_text='%s'", header_text)
110 if header_text in language_mapping:
111 logger.debug("Translating header_text='%s' ...", header_text)
112 header_text = language_mapping[header_text]
114 logger.warning("header_text='%s' not found in language mapping table", header_text)
116 if header_text in blocklist or header_text.lower() in blocklist:
117 # replaced find_next_siblings with find_all_next to account for instances that e.g. hide lists in dropdown menu
118 for line in header.find_all_next("table")[0].find_all("tr")[1:]:
119 blocklist[header_text].append({
120 "domain": tidyup.domain(line.find("span").text),
121 "hash" : tidyup.domain(line.find("span")["title"][9:]),
122 "reason": tidyup.reason(line.find_all("td")[1].text),
125 logger.warning("header_text='%s' not found in blocklist()=%d", header_text, len(blocklist))
127 logger.debug("Returning blocklist for domain='%s' - EXIT!", domain)
129 "reject" : blocklist["Suspended servers"],
130 "media_removal" : blocklist["Filtered media"],
131 "followers_only": blocklist["Limited servers"] + blocklist["Silenced servers"],
134 def fetch_blocks(domain: str, nodeinfo_url: str) -> list:
135 logger.debug("domain='%s',nodeinfo_url='%s' - CALLED!", domain, nodeinfo_url)
136 domain_helper.raise_on(domain)
138 if not isinstance(nodeinfo_url, str):
139 raise ValueError(f"Parameter nodeinfo_url[]='{type(nodeinfo_url)}' is not 'str'")
140 elif nodeinfo_url == "":
141 raise ValueError("Parameter 'nodeinfo_url' is empty")
146 # No CSRF by default, you don't have to add network.api_headers by yourself here
150 logger.debug("Checking CSRF for domain='%s'", domain)
151 headers = csrf.determine(domain, dict())
152 except network.exceptions as exception:
153 logger.warning("Exception '%s' during checking CSRF (fetch_blocks,%s) - EXIT!", type(exception), __name__)
154 instances.set_last_error(domain, exception)
158 # json endpoint for newer mastodongs
159 logger.debug("Querying API domain_blocks: domain='%s'", domain)
160 data = network.get_json_api(
162 "/api/v1/instance/domain_blocks",
164 (config.get("connection_timeout"), config.get("read_timeout"))
167 logger.debug("data[]='%s'", type(data))
168 if "error_message" in data:
169 logger.debug("Was not able to fetch domain_blocks from domain='%s': status_code='%d',error_message='%s'", domain, data['status_code'], data['error_message'])
170 instances.set_last_error(domain, data)
172 elif "json" in data and "error" in data["json"]:
173 logger.warning("JSON API returned error message: '%s'", data['json']['error'])
174 instances.set_last_error(domain, data)
181 logger.debug("domain='%s' has returned zero rows, trying /about/more page ...", domain)
182 rows = fetch_blocks_from_about(domain)
185 logger.info("Checking %d entries from domain='%s' ...", len(rows), domain)
188 logger.debug("block[]='%s'", type(block))
189 if not isinstance(block, dict):
190 logger.debug(f"block[]='{type(block)}' is of type 'dict' - SKIPPED!")
193 reason = tidyup.reason(block["comment"]) if "comment" in block else None
195 logger.debug("Appending blocker='%s',blocked='%s',reason='%s',block_level='%s'", domain, block['domain'], reason, block['severity'])
198 "blocked" : block["domain"],
199 "hash" : block["digest"],
201 "block_level": block["severity"]
204 logger.debug("domain='%s' has no block list")
206 logger.info("Checking %d entries from domain='%s' ...", len(blocklist), domain)
207 for block in blocklist:
208 logger.debug("blocker='%s',blocked='%s',reason='%s',block_level='%s'", block['blocker'], block['blocked'], block['reason'], block['block_level'])
209 block['blocked'] = tidyup.domain(block['blocked'])
210 block['reason'] = tidyup.reason(block['reason'])
211 logger.debug("blocked='%s',reason='%s' - AFTER!", block['blocked'], block['reason'])
213 except network.exceptions as exception:
214 logger.warning("domain='%s',exception[%s]='%s'", domain, type(exception), str(exception))
215 instances.set_last_error(domain, exception)
217 logger.debug("blocklist()=%d - EXIT!", len(blocklist))