WIP OpenGraph embeds
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io
parent
414106a477
commit
dfe952ddaf
6 changed files with 145 additions and 4 deletions
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@ -84,7 +84,7 @@ function bundleHtml() {
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function minifyHtml(html) {
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return require('html-minifier').minify(html, {
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removeComments: true,
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removeComments: false,
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collapseWhitespace: true,
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conservativeCollapse: true,
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}).trim();
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@ -1,5 +1,5 @@
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<!DOCTYPE html>
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<html>
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<html prefix='og: https://ogp.me/ns#'>
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<head>
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<meta charset='utf-8'/>
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<meta name='viewport' content='width=device-width, initial-scale=1, maximum-scale=1'/>
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@ -10,6 +10,7 @@
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<meta name="msapplication-TileImage" content="/img/mstile-150x150.png">
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<title>Loading...</title>
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<!-- Base HTML Placeholder -->
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<!-- Embed Placeholder -->
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<link href='css/app.min.css' rel='stylesheet' type='text/css'/>
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<link href='css/vendor.min.css' rel='stylesheet' type='text/css'/>
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<link rel='shortcut icon' type='image/png' href='img/favicon.png'/>
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@ -23,6 +23,10 @@ http {
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server __BACKEND__:6666;
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}
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upstream frontend {
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server __FRONTEND__:6667;
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}
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server {
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listen 80 default_server;
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@ -71,7 +75,7 @@ http {
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location / {
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root /var/www;
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try_files $uri /index.htm;
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try_files $uri @frontend;
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sendfile on;
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tcp_nopush on;
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@ -81,6 +85,10 @@ http {
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gzip_proxied expired no-cache no-store private auth;
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}
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location @frontend {
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proxy_pass http://frontend;
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}
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location @unauthorized {
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return 403 "Unauthorized";
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default_type text/plain;
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1
client/requirements.txt
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1
client/requirements.txt
Normal file
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@ -0,0 +1 @@
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requests
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130
client/server.py
Normal file
130
client/server.py
Normal file
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@ -0,0 +1,130 @@
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import os
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import os.path
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import html
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import urllib.parse
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import itertools
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from typing import Dict, Any, Callable, Tuple, List, Iterable
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from http import HTTPStatus
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from pathlib import Path
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import requests
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FRONTEND_WEB_ROOT = Path(os.environ["SZURUBOORU_WEB_ROOT"])
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with open(FRONTEND_WEB_ROOT / "index.htm") as f:
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INDEX_HTML = f.read()
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BACKEND_BASE_URL = os.environ["SZURUBOORU_BASE_URL"]
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PUBLIC_BASE_URL = os.environ["SZURUBOORU_PUBLIC_BASE_URL"]
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Metadata = Iterable[Tuple[str, str]]
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def general_embed(server_info: Dict[str, Any]) -> Metadata:
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yield "og:site_name", server_info["config"]["name"]
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def user_embed(username: str) -> Metadata:
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yield "og:type", "profile"
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yield "profile:username", username
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yield "og:title", username
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yield "og:image:height", "128"
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yield "og:image:width", "128"
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user = requests.get(BACKEND_BASE_URL + "/api/user/" + username).json()
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yield "og:image:url", urllib.parse.join(PUBLIC_BASE_URL, user["avatarUrl"])
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def _image_embed(post: Dict[str, Any]) -> Metadata:
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url = PUBLIC_BASE_URL + post["contentUrl"]
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if post["type"] == "video":
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prefix = "og:video"
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yield "og:image", PUBLIC_BASE_URL + post["thumbnailUrl"]
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yield "twitter:card", "player"
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else:
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prefix = "og:image"
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yield "twitter:card", "summary_large_image"
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yield prefix + ":width", str(post["canvasWidth"])
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yield prefix + ":height", str(post["canvasHeight"])
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yield prefix, url
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if BACKEND_BASE_URL.startswith('https://'):
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yield prefix + ":secure_url", url
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yield prefix + ":type", post["mimeType"]
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def _author_embed(user: Dict[str, Any]) -> Metadata:
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yield "article:author", PUBLIC_BASE_URL + "/user/" + user["name"]
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def post_embed(post_id: int) -> Metadata:
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post = requests.get(BACKEND_BASE_URL + f"/api/post/{post_id}").json()
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yield "og:type", "article"
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yield from _author_embed(post["user"])
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yield "og:title", post["user"]["name"]
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if post["tags"]:
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value = "Tags: " + ", ".join(tag["names"][0] for tag in post["tags"])
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yield "og:description", value
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yield "description", value
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yield from _image_embed(post)
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def homepage_embed(server_info: Dict[str, Any]) -> Metadata:
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yield "og:title", server_info["config"]["name"]
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yield "og:type", "website"
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post = server_info["featuredPost"]
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if post is not None:
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yield from _image_embed(post)
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def render_embed(metadata: Metadata) -> str:
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out = []
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for k, v in metadata:
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k, v = html.escape(k), html.escape(v)
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out.append(f'<meta property="{k}" content="{v}">')
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return ''.join(out)
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def application(env: Dict[str, Any], start_response: Callable[[str, Any], Any]) -> Tuple[bytes]:
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def serve_file(path):
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start_response(str(int(HTTPStatus.OK)), [("X-Accel-Redirect", path)])
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return ()
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def serve_without_embed():
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return serve_file("/index.htm")
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method = env["REQUEST_METHOD"]
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if method != "GET":
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start_response(str(int(HTTPStatus.BAD_REQUEST)), [("Content-Type", "text/plain")])
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return (b"Bad request",)
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path = env["PATH_INFO"].lstrip("/")
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path = path.encode("latin-1").decode("utf-8") # PEP-3333
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if path and (FRONTEND_WEB_ROOT / path).exists():
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return serve_file("/" + path)
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path = "/" + path
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path_components = path.split("/")
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if path_components[1] not in {"post", "user", ""}:
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# serve index.htm like normal
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return serve_without_embed()
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server_info = requests.get(BACKEND_BASE_URL + "/api/info").json()
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privileges = server_info["config"]["privileges"]
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if path_components[1] == "user":
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username = path_components[2]
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if privileges["users:view"] != "anonymous" or not username:
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return serve_without_embed()
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metadata = user_embed(username)
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elif path_components[1] == "post":
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try:
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post_id = int(path_components[2])
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except ValueError:
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return serve_without_embed()
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if privileges["posts:view"] != "anonymous":
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return serve_without_embed()
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metadata = post_embed(post_id)
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elif path_components[1] == "":
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metadata = homepage_embed(server_info)
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metadata = itertools.chain(general_embed(server_info), metadata)
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body = INDEX_HTML.replace("<!-- Embed Placeholder -->", render_embed(metadata)).encode("utf-8")
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start_response(str(int(HTTPStatus.OK)), [("Content-Type", "text/html"), ("Content-Length", str(len(body)))])
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return (body,)
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@ -74,7 +74,8 @@ def application(
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) -> Tuple[bytes]:
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try:
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ctx = _create_context(env)
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if "application/json" not in ctx.get_header("Accept"):
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accept_header = ctx.get_header("Accept")
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if accept_header != "*/*" and "application/json" not in accept_header:
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raise errors.HttpNotAcceptable(
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"ValidationError", "This API only supports JSON responses."
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)
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