mirror of
https://git.sr.ht/~tsileo/microblog.pub
synced 2024-11-15 03:04:28 +00:00
132 lines
4.1 KiB
Python
132 lines
4.1 KiB
Python
from dataclasses import asdict
|
|
from dataclasses import dataclass
|
|
from typing import Any
|
|
from typing import Optional
|
|
|
|
from bs4 import BeautifulSoup # type: ignore
|
|
from fastapi import APIRouter
|
|
from fastapi import Depends
|
|
from fastapi import HTTPException
|
|
from fastapi import Request
|
|
from fastapi.responses import JSONResponse
|
|
from loguru import logger
|
|
|
|
from app.boxes import get_outbox_object_by_ap_id
|
|
from app.database import AsyncSession
|
|
from app.database import get_db_session
|
|
from app.database import now
|
|
from app.utils import microformats
|
|
from app.utils.url import check_url
|
|
from app.utils.url import is_url_valid
|
|
from app.utils.url import make_abs
|
|
|
|
router = APIRouter()
|
|
|
|
|
|
@dataclass
|
|
class Webmention:
|
|
actor_icon_url: str
|
|
actor_name: str
|
|
url: str
|
|
received_at: str
|
|
|
|
@classmethod
|
|
def from_microformats(
|
|
cls, items: list[dict[str, Any]], url: str
|
|
) -> Optional["Webmention"]:
|
|
for item in items:
|
|
if item["type"][0] == "h-card":
|
|
return cls(
|
|
actor_icon_url=make_abs(
|
|
item["properties"]["photo"][0], url
|
|
), # type: ignore
|
|
actor_name=item["properties"]["name"][0],
|
|
url=url,
|
|
received_at=now().isoformat(),
|
|
)
|
|
if item["type"][0] == "h-entry":
|
|
author = item["properties"]["author"][0]
|
|
return cls(
|
|
actor_icon_url=make_abs(
|
|
author["properties"]["photo"][0], url
|
|
), # type: ignore
|
|
actor_name=author["properties"]["name"][0],
|
|
url=url,
|
|
received_at=now().isoformat(),
|
|
)
|
|
|
|
return None
|
|
|
|
|
|
def is_source_containing_target(source_html: str, target_url: str) -> bool:
|
|
soup = BeautifulSoup(source_html, "html5lib")
|
|
for link in soup.find_all("a"):
|
|
h = link.get("href")
|
|
if not is_url_valid(h):
|
|
continue
|
|
|
|
if h == target_url:
|
|
return True
|
|
|
|
return False
|
|
|
|
|
|
@router.post("/webmentions")
|
|
async def webmention_endpoint(
|
|
request: Request,
|
|
db_session: AsyncSession = Depends(get_db_session),
|
|
) -> JSONResponse:
|
|
form_data = await request.form()
|
|
try:
|
|
source = form_data["source"]
|
|
target = form_data["target"]
|
|
|
|
if source == target:
|
|
raise ValueError("source URL is the same as target")
|
|
|
|
check_url(source)
|
|
check_url(target)
|
|
except Exception:
|
|
logger.exception("Invalid webmention request")
|
|
raise HTTPException(status_code=400, detail="Invalid payload")
|
|
|
|
logger.info(f"Received webmention {source=} {target=}")
|
|
|
|
mentioned_object = await get_outbox_object_by_ap_id(db_session, target)
|
|
if not mentioned_object:
|
|
logger.info(f"Invalid target {target=}")
|
|
raise HTTPException(status_code=400, detail="Invalid target")
|
|
|
|
maybe_data_and_html = await microformats.fetch_and_parse(source)
|
|
if not maybe_data_and_html:
|
|
logger.info("failed to fetch source")
|
|
raise HTTPException(status_code=400, detail="failed to fetch source")
|
|
|
|
data, html = maybe_data_and_html
|
|
|
|
if not is_source_containing_target(html, target):
|
|
logger.warning("target not found in source")
|
|
raise HTTPException(status_code=400, detail="target not found in source")
|
|
|
|
try:
|
|
webmention = Webmention.from_microformats(data["items"], source)
|
|
if not webmention:
|
|
raise ValueError("Failed to fetch target data")
|
|
except Exception:
|
|
logger.warning("Failed build Webmention for {source=} with {data=}")
|
|
return JSONResponse(content={}, status_code=200)
|
|
|
|
logger.info(f"{webmention=}")
|
|
|
|
if mentioned_object.webmentions is None:
|
|
mentioned_object.webmentions = [asdict(webmention)]
|
|
else:
|
|
mentioned_object.webmentions = [asdict(webmention)] + [
|
|
wm # type: ignore
|
|
for wm in mentioned_object.webmentions # type: ignore
|
|
if wm["url"] != source # type: ignore
|
|
]
|
|
|
|
await db_session.commit()
|
|
|
|
return JSONResponse(content={}, status_code=200)
|