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#--require-config tls-certificate
import urllib.parse
from src import ModuleManager, utils
HOSTMETA = "https://%s/.well-known/host-meta"
WEBFINGER_DEFAULT = "https://%s/.well-known/webfinger?resource={uri}"
WEBFINGER_HEADERS = {"Accept": "application/jrd+json"}
ACTIVITY_TYPE = "application/activity+json"
ACTIVITY_HEADERS = {"Accept": ("application/ld+json; "
'profile="https://www.w3.org/ns/activitystreams"')}
def _parse_username(s):
username, _, instance = s.rpartition("@")
if username.startswith("@"):
username = username[1:]
if username and instance:
return username, instance
return None, None
def _format_username(username, instance):
return "@%s@%s" % (username, instance)
def _setting_parse(s):
username, instance = _parse_username(s)
if username and instance:
return _format_username(username, instance)
return None
@utils.export("set", utils.FunctionSetting(_setting_parse, "fediverse",
help="Set your fediverse account", example="@gargron@mastodon.social"))
class Module(ModuleManager.BaseModule):
_name = "Fedi"
@utils.hook("received.command.fediverse")
@utils.hook("received.command.fedi", alias_of="fediverse")
@utils.kwarg("help", "Get someone's latest toot")
@utils.kwarg("usage", "@<user>@<instance>")
def fedi(self, event):
account = None
if not event["args"]:
account = event["user"].get_setting("fediverse", None)
elif not "@" in event["args"]:
target = event["args_split"][0]
if event["server"].has_user_id(target):
target_user = event["server"].get_user(target)
account = target_user.get_setting("fediverse", None)
else:
account = event["args_split"][0]
username = None
instance = None
if account:
username, instance = _parse_username(account)
if not username or not instance:
raise utils.EventError("Please provide @<user>@<instance>")
hostmeta = utils.http.request(HOSTMETA % instance,
soup=True, check_content_type=False)
webfinger_url = None
for item in hostmeta.data.find_all("link"):
if item["rel"] and item["rel"][0] == "lrdd":
webfinger_url = item["template"]
break
if webfinger_url == None:
self.log.debug("host-meta lookup failed for %s" % instance)
webfinger_url = WEBFINGER_DEFAULT % instance
webfinger_url = webfinger_url.replace("{uri}",
"acct:%s@%s" % (username, instance))
webfinger = utils.http.request(webfinger_url,
headers=WEBFINGER_HEADERS, json=True)
activity_url = None
for link in webfinger.data["links"]:
if link["type"] == ACTIVITY_TYPE:
activity_url = link["href"]
break
if not activity_url:
raise utils.EventError("Failed to find user activity feed")
activity = utils.http.request(activity_url,
headers=ACTIVITY_HEADERS, json=True)
preferred_username = activity.data["preferredUsername"]
outbox_url = activity.data["outbox"]
outbox = utils.http.request(outbox_url, headers=ACTIVITY_HEADERS,
json=True)
items = None
if "first" in outbox.data:
if type(outbox.data["first"]) == dict:
# pleroma
items = outbox.data["first"]["orderedItems"]
else:
# mastodon
first = utils.http.request(outbox.data["first"],
headers=ACTIVITY_HEADERS, json=True)
items = first.data["orderedItems"]
else:
items = outbox.data["orderedItems"]
if not items:
raise utils.EventError("No toots found")
first_item = items[0]
if first_item["type"] == "Announce":
retoot_url = first_item["object"]
retoot_instance = urllib.parse.urlparse(retoot_url).hostname
retoot = utils.http.request(retoot_url,
headers=ACTIVITY_HEADERS, json=True)
original_tooter_url = retoot.data["attributedTo"]
original_tooter = utils.http.request(original_tooter_url,
headers=ACTIVITY_HEADERS, json=True)
retooted_user = "@%s@%s" % (
original_tooter.data["preferredUsername"],
retoot_instance)
shorturl = self.exports.get_one("shorturl")(
event["server"], retoot_url)
retoot_content = utils.http.strip_html(
retoot.data["content"])
event["stdout"].write("%s (boost %s): %s - %s" % (
preferred_username, retooted_user, retoot_content,
shorturl))
elif first_item["type"] == "Create":
content = utils.http.strip_html(
first_item["object"]["content"])
url = first_item["object"]["id"]
shorturl = self.exports.get_one("shorturl")(
event["server"], url)
event["stdout"].write("%s: %s - %s" % (preferred_username,
content, shorturl))
def _ap_self(self):
our_username = self.bot.get_setting("fediverse", None)
return _parse_username(our_username)
def _ap_self_id(self, url_for, our_username):
return "https://%s" % url_for("api", "ap-user", {"u": our_username})
@utils.hook("api.get.ap-webfinger")
@utils.kwarg("authenticated", False)
def ap_webfinger(self, event):
our_username, our_instance = self._ap_self()
resource = event["params"].get("resource", None)
if resource and resource.startswith("acct:"):
request = resource.split(":", 1)[1]
requested_username, requested_instance = _parse_username(request)
if (requested_username == our_username and
requested_instance == our_instance):
self_id = self._ap_self_id(event["url_for"], our_username)
event["response"].content_type = "application/jrd+json"
event["response"].write_json({
"aliases": [self_id],
"links": [{
"href": self_id,
"rel": "self",
"type": ACTIVITY_TYPE
}],
"subject": resource
})
@utils.hook("api.get.ap-user")
@utils.kwarg("authenticated", False)
def ap_user(self, event):
our_username, our_instance = self._ap_self()
username = event["params"].get("u", None)
if username and username == our_username:
self_id = self._ap_self_id(event["url_for"], our_username)
inbox = event["url_for"]("api", "ap-inbox", {"u": our_username})
cert_filename = self.bot.config["tls-certificate"]
with open(cert_filename) as cert_file:
cert = cert_file.read()
event["response"].content_type = ("application/ld+json; "
"profile=\"https://www.w3.org/ns/activitystreams\"")
event["response"].write_json({
"@context": [
"https://www.w3.org/ns/activitystreams",
"https://w3id.org/security/v1"
],
"id": self_id,
"type": "Person",
"preferredUsername": our_username,
"inbox": inbox,
"publicKey": {
"id": "%s#key" % self_id,
"owner": self_id,
"publicKeyPem": cert
}
})
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