forked from forks/microblog.pub
92 lines
2.7 KiB
Python
92 lines
2.7 KiB
Python
from dataclasses import dataclass
|
|
from typing import Any
|
|
from typing import Optional
|
|
|
|
import httpx
|
|
from bs4 import BeautifulSoup # type: ignore
|
|
from loguru import logger
|
|
|
|
from app import config
|
|
from app.utils.datetime import now
|
|
from app.utils.url import check_url
|
|
from app.utils.url import is_url_valid
|
|
from app.utils.url import make_abs
|
|
|
|
|
|
async def _discover_webmention_endoint(url: str) -> str | None:
|
|
async with httpx.AsyncClient() as client:
|
|
try:
|
|
resp = await client.get(
|
|
url,
|
|
headers={
|
|
"User-Agent": config.USER_AGENT,
|
|
},
|
|
follow_redirects=True,
|
|
)
|
|
resp.raise_for_status()
|
|
except (httpx.HTTPError, httpx.HTTPStatusError):
|
|
logger.exception(f"Failed to discover webmention endpoint for {url}")
|
|
return None
|
|
|
|
for k, v in resp.links.items():
|
|
if k and "webmention" in k:
|
|
return make_abs(resp.links[k].get("url"), url)
|
|
|
|
soup = BeautifulSoup(resp.text, "html5lib")
|
|
wlinks = soup.find_all(["link", "a"], attrs={"rel": "webmention"})
|
|
for wlink in wlinks:
|
|
if "href" in wlink.attrs:
|
|
return make_abs(wlink.attrs["href"], url)
|
|
|
|
return None
|
|
|
|
|
|
async def discover_webmention_endpoint(url: str) -> str | None:
|
|
"""Discover the Webmention endpoint of a given URL, if any.
|
|
|
|
Passes all the tests at https://webmention.rocks!
|
|
|
|
"""
|
|
check_url(url)
|
|
|
|
wurl = await _discover_webmention_endoint(url)
|
|
if wurl is None:
|
|
return None
|
|
if not is_url_valid(wurl):
|
|
return None
|
|
return wurl
|
|
|
|
|
|
@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
|