mirror of
https://git.sr.ht/~tsileo/microblog.pub
synced 2024-11-14 10:44:27 +00:00
360 lines
7.7 KiB
Python
360 lines
7.7 KiB
Python
import base64
|
|
from datetime import datetime
|
|
from datetime import timezone
|
|
from functools import lru_cache
|
|
from typing import Any
|
|
from typing import Callable
|
|
from urllib.parse import urlparse
|
|
|
|
import bleach
|
|
import emoji
|
|
import html2text
|
|
import timeago # type: ignore
|
|
from bs4 import BeautifulSoup # type: ignore
|
|
from fastapi import Request
|
|
from fastapi.templating import Jinja2Templates
|
|
from loguru import logger
|
|
from sqlalchemy import func
|
|
from sqlalchemy import select
|
|
from starlette.templating import _TemplateResponse as TemplateResponse
|
|
|
|
from app import activitypub as ap
|
|
from app import config
|
|
from app import models
|
|
from app.actor import LOCAL_ACTOR
|
|
from app.ap_object import Attachment
|
|
from app.ap_object import Object
|
|
from app.config import BASE_URL
|
|
from app.config import DEBUG
|
|
from app.config import VERSION
|
|
from app.config import generate_csrf_token
|
|
from app.config import session_serializer
|
|
from app.database import AsyncSession
|
|
from app.database import now
|
|
from app.media import proxied_media_url
|
|
from app.utils.highlight import HIGHLIGHT_CSS
|
|
from app.utils.highlight import highlight
|
|
|
|
_templates = Jinja2Templates(directory="app/templates")
|
|
|
|
|
|
H2T = html2text.HTML2Text()
|
|
H2T.ignore_links = True
|
|
H2T.ignore_images = True
|
|
|
|
|
|
def _filter_domain(text: str) -> str:
|
|
hostname = urlparse(text).hostname
|
|
if not hostname:
|
|
raise ValueError(f"No hostname for {text}")
|
|
return hostname
|
|
|
|
|
|
def _media_proxy_url(url: str | None) -> str:
|
|
if not url:
|
|
return "/static/nopic.png"
|
|
|
|
if url.startswith(BASE_URL):
|
|
return url
|
|
|
|
encoded_url = base64.urlsafe_b64encode(url.encode()).decode()
|
|
return f"/proxy/media/{encoded_url}"
|
|
|
|
|
|
def is_current_user_admin(request: Request) -> bool:
|
|
is_admin = False
|
|
session_cookie = request.cookies.get("session")
|
|
if session_cookie:
|
|
try:
|
|
loaded_session = session_serializer.loads(
|
|
session_cookie,
|
|
max_age=3600 * 12,
|
|
)
|
|
except Exception:
|
|
pass
|
|
else:
|
|
is_admin = loaded_session.get("is_logged_in")
|
|
|
|
return is_admin
|
|
|
|
|
|
async def render_template(
|
|
db_session: AsyncSession,
|
|
request: Request,
|
|
template: str,
|
|
template_args: dict[str, Any] = {},
|
|
) -> TemplateResponse:
|
|
is_admin = False
|
|
is_admin = is_current_user_admin(request)
|
|
|
|
return _templates.TemplateResponse(
|
|
template,
|
|
{
|
|
"request": request,
|
|
"debug": DEBUG,
|
|
"microblogpub_version": VERSION,
|
|
"is_admin": is_admin,
|
|
"csrf_token": generate_csrf_token() if is_admin else None,
|
|
"highlight_css": HIGHLIGHT_CSS,
|
|
"visibility_enum": ap.VisibilityEnum,
|
|
"notifications_count": await db_session.scalar(
|
|
select(func.count(models.Notification.id)).where(
|
|
models.Notification.is_new.is_(True)
|
|
)
|
|
)
|
|
if is_admin
|
|
else 0,
|
|
"local_actor": LOCAL_ACTOR,
|
|
"followers_count": await db_session.scalar(
|
|
select(func.count(models.Follower.id))
|
|
),
|
|
"following_count": await db_session.scalar(
|
|
select(func.count(models.Following.id))
|
|
),
|
|
**template_args,
|
|
},
|
|
)
|
|
|
|
|
|
# HTML/templates helper
|
|
ALLOWED_TAGS = [
|
|
"a",
|
|
"abbr",
|
|
"acronym",
|
|
"b",
|
|
"br",
|
|
"blockquote",
|
|
"code",
|
|
"pre",
|
|
"em",
|
|
"i",
|
|
"li",
|
|
"ol",
|
|
"strong",
|
|
"sup",
|
|
"sub",
|
|
"del",
|
|
"ul",
|
|
"span",
|
|
"div",
|
|
"p",
|
|
"h1",
|
|
"h2",
|
|
"h3",
|
|
"h4",
|
|
"h5",
|
|
"h6",
|
|
"table",
|
|
"th",
|
|
"tr",
|
|
"td",
|
|
"thead",
|
|
"tbody",
|
|
"tfoot",
|
|
"colgroup",
|
|
"caption",
|
|
"img",
|
|
"div",
|
|
"span",
|
|
]
|
|
|
|
ALLOWED_CSS_CLASSES = [
|
|
"highlight",
|
|
"codehilite",
|
|
"hll",
|
|
"c",
|
|
"err",
|
|
"g",
|
|
"k",
|
|
"l",
|
|
"n",
|
|
"o",
|
|
"x",
|
|
"p",
|
|
"ch",
|
|
"cm",
|
|
"cp",
|
|
"cpf",
|
|
"c1",
|
|
"cs",
|
|
"gd",
|
|
"ge",
|
|
"gr",
|
|
"gh",
|
|
"gi",
|
|
"go",
|
|
"gp",
|
|
"gs",
|
|
"gu",
|
|
"gt",
|
|
"kc",
|
|
"kd",
|
|
"kn",
|
|
"kp",
|
|
"kr",
|
|
"kt",
|
|
"ld",
|
|
"m",
|
|
"s",
|
|
"na",
|
|
"nb",
|
|
"nc",
|
|
"no",
|
|
"nd",
|
|
"ni",
|
|
"ne",
|
|
"nf",
|
|
"nl",
|
|
"nn",
|
|
"nx",
|
|
"py",
|
|
"nt",
|
|
"nv",
|
|
"ow",
|
|
"w",
|
|
"mb",
|
|
"mf",
|
|
"mh",
|
|
"mi",
|
|
"mo",
|
|
"sa",
|
|
"sb",
|
|
"sc",
|
|
"dl",
|
|
"sd",
|
|
"s2",
|
|
"se",
|
|
"sh",
|
|
"si",
|
|
"sx",
|
|
"sr",
|
|
"s1",
|
|
"ss",
|
|
"bp",
|
|
"fm",
|
|
"vc",
|
|
"vg",
|
|
"vi",
|
|
"vm",
|
|
"il",
|
|
]
|
|
|
|
|
|
def _allow_class(_tag: str, name: str, value: str) -> bool:
|
|
return name == "class" and value in ALLOWED_CSS_CLASSES
|
|
|
|
|
|
ALLOWED_ATTRIBUTES: dict[str, list[str] | Callable[[str, str, str], bool]] = {
|
|
"a": ["href", "title"],
|
|
"abbr": ["title"],
|
|
"acronym": ["title"],
|
|
"img": ["src", "alt", "title"],
|
|
"div": _allow_class,
|
|
"span": _allow_class,
|
|
"code": _allow_class,
|
|
}
|
|
|
|
|
|
@lru_cache(maxsize=256)
|
|
def _update_inline_imgs(content):
|
|
soup = BeautifulSoup(content, "html5lib")
|
|
imgs = soup.find_all("img")
|
|
if not imgs:
|
|
return content
|
|
|
|
for img in imgs:
|
|
if not img.attrs.get("src"):
|
|
continue
|
|
|
|
img.attrs["src"] = _media_proxy_url(img.attrs["src"])
|
|
|
|
return soup.find("body").decode_contents()
|
|
|
|
|
|
def _clean_html(html: str, note: Object) -> str:
|
|
try:
|
|
return _emojify(
|
|
_replace_custom_emojis(
|
|
bleach.clean(
|
|
_update_inline_imgs(highlight(html)),
|
|
tags=ALLOWED_TAGS,
|
|
attributes=ALLOWED_ATTRIBUTES,
|
|
strip=True,
|
|
),
|
|
note,
|
|
),
|
|
is_local=note.ap_id.startswith(BASE_URL),
|
|
)
|
|
except Exception:
|
|
raise
|
|
|
|
|
|
def _timeago(original_dt: datetime) -> str:
|
|
dt = original_dt
|
|
if dt.tzinfo:
|
|
dt = dt.astimezone(timezone.utc).replace(tzinfo=None)
|
|
return timeago.format(dt, now().replace(tzinfo=None))
|
|
|
|
|
|
def _has_media_type(attachment: Attachment, media_type_prefix: str) -> bool:
|
|
return attachment.media_type.startswith(media_type_prefix)
|
|
|
|
|
|
def _format_date(dt: datetime) -> str:
|
|
return dt.strftime("%b %d, %Y, %H:%M")
|
|
|
|
|
|
def _pluralize(count: int, singular: str = "", plural: str = "s") -> str:
|
|
if count > 1:
|
|
return plural
|
|
else:
|
|
return singular
|
|
|
|
|
|
def _replace_custom_emojis(content: str, note: Object) -> str:
|
|
idx = {}
|
|
for tag in note.tags:
|
|
if tag.get("type") == "Emoji":
|
|
try:
|
|
idx[tag["name"]] = proxied_media_url(tag["icon"]["url"])
|
|
except KeyError:
|
|
logger.warning(f"Failed to parse custom emoji {tag=}")
|
|
continue
|
|
|
|
for emoji_name, emoji_url in idx.items():
|
|
content = content.replace(
|
|
emoji_name,
|
|
f'<img class="custom-emoji" src="{emoji_url}" title="{emoji_name}" alt="{emoji_name}">', # noqa: E501
|
|
)
|
|
|
|
return content
|
|
|
|
|
|
def _html2text(content: str) -> str:
|
|
return H2T.handle(content)
|
|
|
|
|
|
def _replace_emoji(u: str, _) -> str:
|
|
filename = hex(ord(u))[2:]
|
|
return config.EMOJI_TPL.format(filename=filename, raw=u)
|
|
|
|
|
|
def _emojify(text: str, is_local: bool) -> str:
|
|
if not is_local:
|
|
return text
|
|
|
|
return emoji.replace_emoji(
|
|
text,
|
|
replace=_replace_emoji,
|
|
)
|
|
|
|
|
|
_templates.env.filters["domain"] = _filter_domain
|
|
_templates.env.filters["media_proxy_url"] = _media_proxy_url
|
|
_templates.env.filters["clean_html"] = _clean_html
|
|
_templates.env.filters["timeago"] = _timeago
|
|
_templates.env.filters["format_date"] = _format_date
|
|
_templates.env.filters["has_media_type"] = _has_media_type
|
|
_templates.env.filters["html2text"] = _html2text
|
|
_templates.env.filters["emojify"] = _emojify
|
|
_templates.env.filters["pluralize"] = _pluralize
|