fetch_blocks.py

   1 from requests import get
   2 from hashlib import sha256
   3 import sqlite3
   4 from bs4 import BeautifulSoup
   5
   6 headers = {
   7     "user-agent": "Mozilla/5.0 (Windows NT 10.0; rv:91.0) Gecko/20100101 Firefox/91.0"
   8 }
   9
  10
  11 def get_mastodon_blocks(domain: str) -> dict:
  12     blocks = {
  13         "Suspended servers": [],
  14         "Filtered media": [],
  15         "Limited servers": [],
  16         "Silenced servers": [],
  17     }
  18
  19     translations = {
  20         "Gesperrte Server": "Suspended servers",
  21         "Gefilterte Medien": "Filtered media",
  22         "Stummgeschaltete Server": "Silenced servers",
  23         "停止済みのサーバー": "Suspended servers",
  24         "メディアを拒否しているサーバー": "Filtered media",
  25         "サイレンス済みのサーバー": "Silenced servers",
  26         "Serveurs suspendus": "Suspended servers",
  27         "Médias filtrés": "Filtered media",
  28         "Serveurs limités": "Silenced servers",
  29     }
  30
  31     try:
  32         doc = BeautifulSoup(
  33             get(f"https://{domain}/about/more", headers=headers, timeout=5).text,
  34             "html.parser",
  35         )
  36     except:
  37         return {}
  38
  39     for header in doc.find_all("h3"):
  40         for line in header.find_next_siblings("table")[0].find_all("tr")[1:]:
  41             header_text = header.text
  42             if header_text in translations:
  43                     header_text = translations[header_text]
  44             if header_text in blocks:
  45                 blocks[header_text].append(
  46                     {
  47                         "domain": line.find("span").text,
  48                         "hash": line.find("span")["title"][9:],
  49                         "reason": line.find_all("td")[1].text.strip(),
  50                     }
  51                 )
  52     return {
  53         "reject": blocks["Suspended servers"],
  54         "media_removal": blocks["Filtered media"],
  55         "federated_timeline_removal": blocks["Limited servers"]
  56         + blocks["Silenced servers"],
  57     }
  58
  59
  60 def get_hash(domain: str) -> str:
  61     return sha256(domain.encode("utf-8")).hexdigest()
  62
  63
  64 def get_type(domain: str) -> str:
  65     try:
  66         res = get(f"https://{domain}/nodeinfo/2.1.json", headers=headers, timeout=5)
  67         if res.status_code == 404:
  68             res = get(f"https://{domain}/nodeinfo/2.0.json", headers=headers, timeout=5)
  69         if res.ok and "text/html" in res.headers["content-type"]:
  70             res = get(f"https://{domain}/nodeinfo/2.1", headers=headers, timeout=5)
  71         if res.ok:
  72             return res.json()["software"]["name"]
  73         elif res.status_code == 404:
  74             res = get(f"https://{domain}/api/v1/instance", headers=headers, timeout=5)
  75         if res.ok:
  76             return "mastodon"
  77     except:
  78         return None
  79
  80
  81 conn = sqlite3.connect("blocks.db")
  82 c = conn.cursor()
  83
  84 c.execute(
  85     "select domain, software from instances where software in ('pleroma', 'mastodon')"
  86 )
  87
  88 for blocker, software in c.fetchall():
  89     if software == "pleroma":
  90         print(blocker)
  91         try:
  92             # Blocks
  93             federation = get(
  94                 f"https://{blocker}/nodeinfo/2.1.json", headers=headers, timeout=5
  95             ).json()["metadata"]["federation"]
  96             if "mrf_simple" in federation:
  97                 for block_level, blocks in (
  98                     {**federation["mrf_simple"],
  99                     **{"quarantined_instances": federation["quarantined_instances"]}}
 100                 ).items():
 101                     for blocked in blocks:
 102                         if blocked == "":
 103                             continue
 104                         c.execute(
 105                             "select domain from instances where domain = ?", (blocked,)
 106                         )
 107                         if c.fetchone() == None:
 108                             c.execute(
 109                                 "insert into instances select ?, ?, ?",
 110                                 (blocked, get_hash(blocked), get_type(blocked)),
 111                             )
 112                         c.execute(
 113                             "select * from blocks where blocker = ? and blocked = ? and block_level = ?",
 114                             (blocker, blocked, block_level),
 115                         )
 116                         if c.fetchone() == None:
 117                             c.execute(
 118                                 "insert into blocks select ?, ?, '', ?",
 119                                 (blocker, blocked, block_level),
 120                             )
 121             conn.commit()
 122             # Reasons
 123             if "mrf_simple_info" in federation:
 124                 for block_level, info in (
 125                     {**federation["mrf_simple_info"],
 126                     **(federation["quarantined_instances_info"]
 127                     if "quarantined_instances_info" in federation
 128                     else {})}
 129                 ).items():
 130                     for blocked, reason in info.items():
 131                         c.execute(
 132                             "update blocks set reason = ? where blocker = ? and blocked = ? and block_level = ?",
 133                             (reason["reason"], blocker, blocked, block_level),
 134                         )
 135             conn.commit()
 136         except Exception as e:
 137             print("error:", e, blocker)
 138     elif software == "mastodon":
 139         print(blocker)
 140         try:
 141             json = get_mastodon_blocks(blocker)
 142             for block_level, blocks in json.items():
 143                 for instance in blocks:
 144                     blocked, blocked_hash, reason = instance.values()
 145                     if blocked.count("*") <= 1:
 146                         c.execute(
 147                             "select hash from instances where hash = ?", (blocked_hash,)
 148                         )
 149                         if c.fetchone() == None:
 150                             c.execute(
 151                                 "insert into instances select ?, ?, ?",
 152                                 (blocked, get_hash(blocked), get_type(blocked)),
 153                             )
 154                     c.execute(
 155                         "select * from blocks where blocker = ? and blocked = ? and block_level = ?",
 156                         (blocker, blocked, block_level),
 157                     )
 158                     if c.fetchone() == None:
 159                         c.execute(
 160                             "insert into blocks select ?, ?, ?, ?",
 161                             (
 162                                 blocker,
 163                                 blocked if blocked.count("*") <= 1 else blocked_hash,
 164                                 reason,
 165                                 block_level,
 166                             ),
 167                         )
 168             conn.commit()
 169         except Exception as e:
 170             print("error:", e, blocker)
 171 conn.close()