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import os.path, urllib.parse
import bs4
from src import IRCBot, utils
from . import ap_actor
LD_TYPE = ("application/ld+json; "
"profile=\"https://www.w3.org/ns/activitystreams\"")
JRD_TYPE = "application/jrd+json"
ACTIVITY_TYPE = "application/activity+json"
USERAGENT = "BitBot (%s) Fediverse" % IRCBot.VERSION
def split_username(s):
if s[0] == "@":
s = s[1:]
username, _, instance = s.partition("@")
if username and instance:
return username, instance
return None, None
def activity_request(url, data=None, method="GET", type=ACTIVITY_TYPE,
headers={}):
content_type = None
if method == "POST":
content_type = type
else:
headers = {"Accept": type}
request = utils.http.Request(url, headers=headers, useragent=USERAGENT,
content_type=content_type, post_data=data, method=method, json=True,
json_body=True, fallback_encoding="utf8")
return utils.http.request(request)
HOSTMETA_TEMPLATE = "https://%s/.well-known/host-meta"
WEBFINGER_TEMPLATE = "https://%s/.well-known/webfinger?resource={uri}"
class FindActorException(Exception):
pass
def find_actor(username, instance):
hostmeta = HOSTMETA_TEMPLATE % instance
hostmeta_request = utils.http.Request(HOSTMETA_TEMPLATE % instance,
useragent=USERAGENT, parse=True, check_content_type=False)
try:
hostmeta = utils.http.request(hostmeta_request)
except:
raise FindActorException("Failed to get host-meta for %s" % instance)
webfinger_url = None
if hostmeta.code == 200:
for item in hostmeta.data.find_all("link"):
if item["rel"] and item["rel"][0] == "lrdd":
webfinger_url = item["template"]
break
if not webfinger_url:
webfinger_url = WEBFINGER_TEMPLATE % instance
webfinger_url = webfinger_url.replace("{uri}",
"acct:%s@%s" % (username, instance), 1)
try:
webfinger = activity_request(webfinger_url, type=JRD_TYPE)
except:
raise FindActorException("Failed to get webfinger for %s" % instance)
actor_url = None
if webfinger.code == 200:
for link in webfinger.data["links"]:
if link["type"] == ACTIVITY_TYPE:
return link["href"]
else:
raise FindActorException("Could not find user @%s@%s" %
(username, instance))
KNOWN_TAGS = ["p", "br"]
def _line(item):
if type(item) == bs4.element.Tag:
if item.name == "p":
out = ""
for subitem in item.children:
out += _line(subitem)
return "\n%s\n" % out
elif item.name == "br":
return "\n"
else:
return str(item)
def _normalise_note(content):
soup = bs4.BeautifulSoup(content, "lxml").body
lines = []
for element in soup.find_all():
if not element.name in KNOWN_TAGS:
if element.text.strip() == "":
element.decompose()
else:
element.unwrap()
out = ""
for element in soup.children:
out += _line(element)
return utils.parse.line_normalise(out)
def _content(note):
content = note.get("content", None)
attachment = note.get("attachment", [])
if note.get("content", None):
return _normalise_note(content)
elif attachment:
type = attachment[0]["mediaType"].split("/", 1)[0]
filename = os.path.basename(attachment[0]["url"])
extension = None
if "." in filename:
filename, extension = filename.rsplit(".", 1)
if len(filename) > 20:
filename = "%s[...]" % filename[:20]
if extension:
filename = "%s.%s" % (filename, extension)
else:
filename = "%s: %s" % (type, filename)
return "<%s>" % filename
def format_note(actor, note, type="Create"):
if type == "Announce":
retoot_url = note
retoot_instance = urllib.parse.urlparse(retoot_url).hostname
retoot = activity_request(retoot_url)
retoot_url = retoot.data.get("url", retoot.data["id"])
original_tooter = ap_actor.Actor(retoot.data["attributedTo"])
original_tooter.load()
retooted_user = "@%s@%s" % (original_tooter.username, retoot_instance)
retoot_content = _content(retoot.data)
return (retoot.data.get("summary", None), "%s (boost %s): %s" % (
actor.username, retooted_user, retoot_content), retoot_url)
elif type == "Create":
content = _content(note)
url = note.get("url", note["id"])
return (note.get("summary", None),
"%s: %s" % (actor.username, content), url)
return None, None, None
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