support misskey blocks

src/fediblockhole/__init__.py

@@ -5,6 +5,7 @@ import argparse
 import toml
 import csv
 import requests
+import re
 import json
 import time
 import os.path
@@ -148,7 +149,7 @@ def fetch_from_urls(url_sources: dict,
             blocklists.append(bl)
             if save_intermediate:
                 save_intermediate_blocklist(bl, savedir, export_fields)
-    
+
     return blocklists
 
 def fetch_from_instances(sources: dict,
@@ -245,7 +246,7 @@ def merge_blocklists(blocklists: list[Blocklist], mergeplan: str='max',
         if save_block_audit_file:
             blockdata:BlockAudit = {
                 'domain': domain,
-                'count': domain_matches_count, 
+                'count': domain_matches_count,
                 'percent': domain_matches_percent,
             }
             audit.blocks[domain] = blockdata
@@ -258,7 +259,7 @@ def merge_blocklists(blocklists: list[Blocklist], mergeplan: str='max',
 
 def apply_mergeplan(oldblock: DomainBlock, newblock: DomainBlock, mergeplan: str='max') -> dict:
     """Use a mergeplan to decide how to merge two overlapping block definitions
-    
+
     @param oldblock: The existing block definition.
     @param newblock: The new block definition we want to merge in.
     @param mergeplan: How to merge. Choices are 'max', the default, and 'min'.
@@ -276,7 +277,7 @@ def apply_mergeplan(oldblock: DomainBlock, newblock: DomainBlock, mergeplan: str
         except KeyError:
             log.debug(f"Key '{key}' missing from block definition so cannot compare. Continuing...")
             continue
-    
+
     # How do we override an earlier block definition?
     if mergeplan in ['max', None]:
         # Use the highest block level found (the default)
@@ -285,7 +286,7 @@ def apply_mergeplan(oldblock: DomainBlock, newblock: DomainBlock, mergeplan: str
         if newblock.severity > oldblock.severity:
             # log.debug(f"New block severity is higher. Using that.")
             blockdata['severity'] = newblock.severity
-        
+
         # For 'reject_media', 'reject_reports', and 'obfuscate' if
         # the value is set and is True for the domain in
         # any blocklist then the value is set to True.
@@ -345,7 +346,7 @@ def merge_comments(oldcomment:str, newcomment:str) -> str:
     # "boring, lack of moderation, nazis, scrapers"
     old_tokens = oldcomment.split(', ')
     new_tokens = newcomment.split(', ')
-    
+
     # Remove any empty string tokens that we get
     while '' in old_tokens:
         old_tokens.remove('')
@@ -374,7 +375,141 @@ def requests_headers(token: str=None):
 
     return headers
 
+def get_nodeinfo(server, token: str=None, host_meta_fallback = False):
+    headers = requests_headers(token)
+    url = f'https://{server}/.well-known/nodeinfo'
+    try:
+        resp = requests.get(url, headers=headers, timeout=REQUEST_TIMEOUT)
+    except Exception as ex:
+        log.error(f"Error getting host node info for {server}. Exception: {ex}")
+        return None
+
+    # if well-known nodeinfo isn't found, try to check host-meta for a webfinger URL
+    # needed on servers where the display domain is different than the web domain
+    if resp.status_code != 200 and not host_meta_fallback:
+        # not found, try to check host-meta as a fallback
+        log.warning(f'nodeinfo for {server} not found, checking host-meta')
+        new_server = get_server_from_host_meta(server)
+        if new_server is not None:
+            if new_server == server:
+                log.debug(f'host-meta for {server} did not get a new server.')
+                return None
+            else:
+                return get_nodeinfo(new_server, True)
+        else:
+            return None
+
+    if resp.status_code == 200:
+        nodeLoc = None
+        try:
+            nodeInfo = resp.json()
+            for link in nodeInfo['links']:
+                if link['rel'] in [
+                    'http://nodeinfo.diaspora.software/ns/schema/2.0',
+                    'http://nodeinfo.diaspora.software/ns/schema/2.1',
+                ]:
+                    nodeLoc = link['href']
+                    break
+        except Exception as ex:
+            log.error(f'error getting server {server} info from well-known node info. Exception: {ex}')
+            return None
+    else:
+        log.error(f'Error getting well-known host node info for {server}. Status Code: {resp.status_code}')
+        return None
+
+    if nodeLoc is None:
+        log.warning(f'could not find link to node info in well-known nodeinfo of {server}')
+        return None
+
+    # regrab server from nodeLoc, again in the case of different display and web domains
+    match = re.match(
+        r"https://(?P<server>[^/]+)/", nodeLoc
+    )
+    if match is None:
+        log.error(f"Error getting web server name from {server}.")
+        return None
+
+    server = match.group('server')
+
+    try:
+        resp = requests.get(nodeLoc, headers=headers, timeout=REQUEST_TIMEOUT)
+    except Exception as ex:
+        log.error(f"Error getting host node info for {server}. Exception: {ex}")
+        return None
+
+    if resp.status_code == 200:
+        try:
+            nodeInfo = resp.json()
+            if 'activitypub' not in nodeInfo['protocols']:
+                log.warning(f'server {server} does not support activitypub, skipping')
+                return None
+            return {
+                'webserver': server,
+                'software': nodeInfo['software']['name'],
+                'version': nodeInfo['software']['version'],
+                'rawnodeinfo': nodeInfo,
+            }
+        except Exception as ex:
+            log.error(f'error getting server {server} info from nodeinfo. Exception: {ex}')
+            return None
+    else:
+        log.error(f'Error getting host node info for {server}. Status Code: {resp.status_code}')
+        return None
+
+def set_server_apis(server):
+    # support for new server software should be added here
+    software_apis = {
+        'mastodonApiSupport': ['mastodon', 'pleroma', 'akkoma', 'pixelfed', 'hometown', 'iceshrimp'],
+        'misskeyApiSupport': ['misskey', 'calckey', 'firefish', 'foundkey', 'sharkey'],
+        'lemmyApiSupport': ['lemmy']
+    }
+
+    for api, softwareList in software_apis.items():
+        server[api] = server['software'] in softwareList
+
+    # search `features` list in metadata if available
+    if 'metadata' in server['rawnodeinfo'] and 'features' in server['rawnodeinfo']['metadata'] and type(server['rawnodeinfo']['metadata']['features']) is list:
+        features = server['rawnodeinfo']['metadata']['features']
+        if 'mastodon_api' in features:
+            server['mastodonApiSupport'] = True
+
+def fetch_server_info(server, token: str=None):
+    nodeinfo = get_nodeinfo(server, token=token)
+    if nodeinfo is None:
+        return None
+    else:
+        set_server_apis(nodeinfo)
+        return nodeinfo
+
+def fetch_api_type(host: str, token: str=None) -> str:
+    server_info = fetch_server_info(host, token)
+    # Many Misskey supports also support Mastodon API to varying
+    # extents, so we should check Misskey API support before checking
+    # Mastodon API support.
+    if server_info['misskeyApiSupport']:
+        return "misskey"
+    elif server_info['mastodonApiSupport']:
+        return "mastodon"
+    else:
+        sys.exit(f"Unknown API type for {host}")
+
+
 def fetch_instance_blocklist(host: str, token: str=None, admin: bool=False,
+    import_fields: list=['domain', 'severity'],
+    scheme: str='https') -> list[DomainBlock]:
+    """
+    Fetch existing block from server (Misskey or Mastodon)
+    """
+    api_type = fetch_api_type(host)
+
+    if api_type == 'mastodon':
+        return fetch_instance_blocklist_mastodon(host, token, admin, import_fields, scheme)
+    elif api_type == 'misskey':
+        return fetch_instance_blocklist_misskey(host, token, admin, import_fields, scheme)
+    else:
+        sys.exit(f"Unknown API type for server {host}")
+
+def fetch_instance_blocklist_mastodon(host: str, token: str=None, admin: bool=False,
     import_fields: list=['domain', 'severity'],
     scheme: str='https') -> list[DomainBlock]:
     """Fetch existing block list from server
@@ -385,7 +520,7 @@ def fetch_instance_blocklist(host: str, token: str=None, admin: bool=False,
     @param import_fields: A list of fields to import from the remote instance.
     @returns: A list of the domain blocks from the instance.
     """
-    log.info(f"Fetching instance blocklist from {host} ...")
+    log.info(f"Fetching instance blocklist (Mastodon) from {host} ...")
 
     if admin:
         api_path = "/api/v1/admin/domain_blocks"
@@ -424,7 +559,7 @@ def fetch_instance_blocklist(host: str, token: str=None, admin: bool=False,
         else:
             next = pagination[0]
             # prev = pagination[1]
-        
+
             urlstring, rel = next.split('; ')
             url = urlstring.strip('<').rstrip('>')
 
@@ -432,6 +567,54 @@ def fetch_instance_blocklist(host: str, token: str=None, admin: bool=False,
 
     return blocklist
 
+def fetch_instance_blocklist_misskey(host: str, token: str=None, admin: bool=False,
+    import_fields: list=['domain', 'severity'],
+    scheme: str='https') -> list[DomainBlock]:
+    """Fetch existing block list from server
+
+    @param host: The remote host to connect to.
+    @param token: The (required) OAuth Bearer token to authenticate with.
+    @param admin: Boolean flag to use the admin API if True.
+    @param import_fields: A list of fields to import from the remote instance.
+    @returns: A list of the domain blocks from the instance.
+    """
+    log.info(f"Fetching instance blocklist (Misskey) from {host} ...")
+
+    if admin:
+        api_path = "/api/admin/meta"
+        parse_format = 'json'
+    else:
+        sys.exit("Must be an admin to use the meta API")
+
+    headers = requests_headers(token)
+
+    url = f"{scheme}://{host}{api_path}"
+
+    blockdata = []
+
+    response = requests.post(url, headers=headers, timeout=REQUEST_TIMEOUT, json={})
+    if response.status_code != 200:
+        log.error(f"{response.status_code} Cannot fetch remote blocklist: {response.content}")
+        raise ValueError("Unable to fetch domain block list: %s", response)
+
+    # Convert the Misskey block (which are just domains) into
+    # something similar to Mastodon response that Fediblockhole
+    # can understand.
+    def map_block(domain, severity):
+        return { "domain": domain, "digest": "", "severity": severity, "comment": "" }
+
+    meta = json.loads(response.content.decode('utf-8'))
+
+    blocked_hosts = [ map_block(domain, "suspend") for domain in meta['blockedHosts'] ]
+    silenced_hosts = [ map_block(domain, "silence") for domain in meta['silencedHosts'] ]
+
+    blockdata.extend(blocked_hosts)
+    blockdata.extend(silenced_hosts)
+
+    blocklist = parse_blocklist(blockdata, url, parse_format, import_fields)
+
+    return blocklist
+
 def delete_block(token: str, host: str, id: int, scheme: str='https'):
     """Remove a domain block"""
     log.debug(f"Removing domain block {id} at {host}...")
@@ -552,9 +735,9 @@ def add_block(token: str, host: str, blockdata: DomainBlock, scheme: str='https'
         log.warning(err['error'])
 
     elif response.status_code != 200:
-            
+
         raise ValueError(f"Something went wrong: {response.status_code}: {response.content}")
-           
+
 def push_blocklist(token: str, host: str, blocklist: list[DomainBlock],
                     dryrun: bool=False,
                     import_fields: list=['domain', 'severity'],
@@ -563,7 +746,7 @@ def push_blocklist(token: str, host: str, blocklist: list[DomainBlock],
                     override_private_comment: str=None
                     ):
     """Push a blocklist to a remote instance.
-    
+
     Updates existing entries if they exist, creates new blocks if they don't.
 
     @param token: The Bearer token for OAUTH API authentication
@@ -579,11 +762,10 @@ def push_blocklist(token: str, host: str, blocklist: list[DomainBlock],
     serverblocks = fetch_instance_blocklist(host, token, True, import_fields, scheme)
 
     # # Convert serverblocks to a dictionary keyed by domain name
-    # knownblocks = {row.domain: row for row in serverblocks}
-
     for newblock in blocklist.values():
-
         log.debug(f"Processing block: {newblock}")
+
+        # Already existing block
         if newblock.domain in serverblocks:
             log.debug(f"Block already exists for {newblock.domain}, checking for differences...")
 
@@ -612,19 +794,12 @@ def push_blocklist(token: str, host: str, blocklist: list[DomainBlock],
                 blockdata = oldblock.copy()
                 blockdata.update(newblock)
                 log.debug(f"Block as dict: {blockdata._asdict()}")
-
-                if not dryrun:
-                    update_known_block(token, host, blockdata, scheme)
-                    # add a pause here so we don't melt the instance
-                    time.sleep(API_CALL_DELAY)
-                else:
-                    log.info("Dry run selected. Not applying changes.")
-
             else:
                 log.debug("No differences detected. Not updating.")
                 pass
 
         else:
+            # New block
             # stamp this record with a private comment, since we're the ones adding it
             if override_private_comment:
                 newblock.private_comment = override_private_comment
@@ -636,16 +811,56 @@ def push_blocklist(token: str, host: str, blocklist: list[DomainBlock],
 
             # Make sure the new block doesn't clobber a domain with followers
             newblock.severity = check_followed_severity(host, token, newblock.domain, newblock.severity, max_followed_severity, scheme)
-            if not dryrun:
+
-                add_block(token, host, newblock, scheme)
+    # Append existing blocks to the new blocks (needed because Misskey
-                # add a pause here so we don't melt the instance
+    # is all at once update operation)
-                time.sleep(API_CALL_DELAY)
+    for existing_block in serverblocks.values():
-            else:
+        if existing_block.domain not in blocklist:
-                log.info("Dry run selected. Not adding block.")
+            blocklist.blocks[existing_block.domain] = existing_block
+
+    apply_blocks_misskey(blocklist, host, scheme, token)
+
+def apply_blocks_misskey(blocklist: Blocklist, host:str, scheme: str="https", token: str=None):
+    # instead of being cool and trying to update everything, split
+    # into lists of suspends and silences, then call update meta with
+    # these new lists.
+    suspended_hosts = []
+    silenced_hosts = []
+
+    suspend_level = BlockSeverity("suspend")
+    silence_level = BlockSeverity("silence")
+
+    for block in blocklist.values():
+        if block.severity == suspend_level:
+            suspended_hosts.append(block.domain)
+        elif block.severity == silence_level:
+            silenced_hosts.append(block.domain)
+
+    # Make one big call to update-meta with new blocks and suspends
+    api_path = "/api/admin/update-meta"
+    parse_format = 'json'
+
+    headers = requests_headers(token)
+
+    url = f"{scheme}://{host}{api_path}"
+
+    update_data = {
+        "blockedHosts": suspended_hosts,
+        "silencedHosts": silenced_hosts
+    }
+
+    response = requests.post(url, headers=headers, timeout=REQUEST_TIMEOUT, json=update_data)
+    if response.status_code != 200 and response.status_code != 204:
+        log.error(f"{response.status_code} Unable to apply blocklist: {response.content}")
+        raise ValueError("Unable to apply block list: %s", response)
+
+    log.info(f"Updated meta with {len(suspended_hosts)} blocks and {len(silenced_hosts)} silences")
+    return True
+
 
 def load_config(configfile: str):
     """Augment commandline arguments with config file parameters
-    
+
     Config file is expected to be in TOML format
     """
     conf = toml.load(configfile)
@@ -723,7 +938,7 @@ def save_domain_block_audit_to_file(
 
 def augment_args(args, tomldata: str=None):
     """Augment commandline arguments with config file parameters
-    
+
     If tomldata is provided, uses that data instead of loading
     from a config file.
     """
@@ -749,7 +964,7 @@ def augment_args(args, tomldata: str=None):
 
     if not args.override_private_comment:
         args.override_private_comment = conf.get('override_private_comment', None)
-    
+
     if not args.savedir:
         args.savedir = conf.get('savedir', '/tmp')