Use newer security context instead of identity for LD sig

Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.10-slim as python-base
+FROM python:3.11-slim as python-base
 ENV PYTHONUNBUFFERED=1 \
     PYTHONDONTWRITEBYTECODE=1 \
     POETRY_HOME="/opt/poetry" \

README.md

@@ -10,6 +10,7 @@ Instances in the wild:
  - [microblog.pub](https://microblog.pub/) (follow to get updated about the project)
  - [hexa.ninja](https://hexa.ninja) (theme customization example)
  - [testing.microblog.pub](https://testing.microblog.pub/)
+ - [Irish Left Archive](https://posts.leftarchive.ie/) (another theme customization example)
 
 There are still some rough edges, but the server is mostly functional.
 

app/admin.py

@@ -189,8 +189,11 @@ async def admin_new(
             content += f"{in_reply_to_object.actor.handle} "
         for tag in in_reply_to_object.tags:
             if tag.get("type") == "Mention" and tag["name"] != LOCAL_ACTOR.handle:
-                mentioned_actor = await fetch_actor(db_session, tag["href"])
-                content += f"{mentioned_actor.handle} "
+                try:
+                    mentioned_actor = await fetch_actor(db_session, tag["href"])
+                    content += f"{mentioned_actor.handle} "
+                except Exception:
+                    logger.exception(f"Failed to lookup {mentioned_actor}")
 
         # Copy the content warning if any
         if in_reply_to_object.summary:

app/ldsig.py

@@ -23,6 +23,13 @@ requests_loader = pyld.documentloader.requests.requests_document_loader()
 def _loader(url, options={}):
     # See https://github.com/digitalbazaar/pyld/issues/133
     options["headers"]["Accept"] = "application/ld+json"
+
+    # XXX: temp fix/hack is it seems to be down for now
+    if url == "https://w3id.org/identity/v1":
+        url = (
+            "https://raw.githubusercontent.com/web-payments/web-payments.org"
+            "/master/contexts/identity-v1.jsonld"
+        )
     return requests_loader(url, options)
 
 
@@ -34,7 +41,7 @@ def _options_hash(doc: ap.RawObject) -> str:
     for k in ["type", "id", "signatureValue"]:
         if k in doc:
             del doc[k]
-    doc["@context"] = "https://w3id.org/identity/v1"
+    doc["@context"] = "https://w3id.org/security/v1"
     normalized = jsonld.normalize(
         doc, {"algorithm": "URDNA2015", "format": "application/nquads"}
     )

app/main.py

@@ -1256,7 +1256,11 @@ async def post_remote_interaction(
 @app.get("/.well-known/webfinger")
 async def wellknown_webfinger(resource: str) -> JSONResponse:
     """Exposes/servers WebFinger data."""
-    if resource not in [f"acct:{USERNAME}@{DOMAIN}", ID]:
+    if resource not in [
+        f"acct:{USERNAME}@{WEBFINGER_DOMAIN}",
+        ID,
+        f"acct:{USERNAME}@{DOMAIN}",
+    ]:
         logger.info(f"Got invalid req for {resource}")
         raise HTTPException(status_code=404)
 

app/scss/main.scss

@@ -432,8 +432,7 @@ a.label-btn {
     .activity-attachment {
         margin: 30px 0 20px 0;
         img, audio, video {
-            width: 100%;
-            max-width: 740px;
+            max-width: calc(min(740px, 100%));
         }
     }
     img.inline-img {

app/source.py

@@ -3,12 +3,12 @@ import typing
 
 from loguru import logger
 from mistletoe import Document  # type: ignore
+from mistletoe.block_token import CodeFence  # type: ignore
 from mistletoe.html_renderer import HTMLRenderer  # type: ignore
 from mistletoe.span_token import SpanToken  # type: ignore
-from pygments import highlight  # type: ignore
 from pygments.formatters import HtmlFormatter  # type: ignore
 from pygments.lexers import get_lexer_by_name as get_lexer  # type: ignore
-from pygments.lexers import guess_lexer  # type: ignore
+from pygments.util import ClassNotFound  # type: ignore
 from sqlalchemy import select
 
 from app import webfinger
@@ -104,10 +104,16 @@ class CustomRenderer(HTMLRenderer):
         )
         return link
 
-    def render_block_code(self, token: typing.Any) -> str:
+    def render_block_code(self, token: CodeFence) -> str:
+        lexer_attr = ""
+        try:
+            lexer = get_lexer(token.language)
+            lexer_attr = f' data-microblogpub-lexer="{lexer.aliases[0]}"'
+        except ClassNotFound:
+            pass
+
         code = token.children[0].content
-        lexer = get_lexer(token.language) if token.language else guess_lexer(code)
-        return highlight(code, lexer, _FORMATTER)
+        return f"<pre><code{lexer_attr}>\n{code}\n</code></pre>"
 
 
 async def _prefetch_mentioned_actors(

app/templates/articles.html

@@ -11,8 +11,8 @@
 <ul class="h-feed" id="articles">
 <data class="p-name" value="{{ local_actor.display_name}}'s articles"></data>
 {% for outbox_object in objects %}
-    <li>
-        <span class="muted">{{ outbox_object.ap_published_at.strftime("%b %d, %Y") }}</span> <a href="{{ outbox_object.url }}">{{ outbox_object.name }}</a>
+    <li class="h-entry">
+        <time class="muted dt-published" datetime="{{ outbox_object.ap_published_at.isoformat() }}">{{ outbox_object.ap_published_at.strftime("%b %d, %Y") }}</time> <a href="{{ outbox_object.url }}" class="u-url u-uid p-name">{{ outbox_object.name }}</a>
     </li>
 {% endfor %}
 </ul>

app/utils/facepile.py

@@ -1,5 +1,6 @@
 import datetime
 from dataclasses import dataclass
+from datetime import timezone
 from typing import Any
 from typing import Optional
 
@@ -9,7 +10,7 @@ from app import media
 from app.models import InboxObject
 from app.models import Webmention
 from app.utils.datetime import parse_isoformat
-from app.utils.url import make_abs
+from app.utils.url import must_make_abs
 
 
 @dataclass
@@ -39,13 +40,15 @@ class Face:
                     return cls(
                         ap_actor_id=None,
                         url=(
-                            item["properties"]["url"][0]
+                            must_make_abs(
+                                item["properties"]["url"][0], webmention.source
+                            )
                             if item["properties"].get("url")
                             else webmention.source
                         ),
                         name=item["properties"]["name"][0],
                         picture_url=media.resized_media_url(
-                            make_abs(
+                            must_make_abs(
                                 item["properties"]["photo"][0], webmention.source
                             ),  # type: ignore
                             50,
@@ -65,7 +68,7 @@ class Face:
                         url=webmention.source,
                         name=author["properties"]["name"][0],
                         picture_url=media.resized_media_url(
-                            make_abs(
+                            must_make_abs(
                                 author["properties"]["photo"][0], webmention.source
                             ),  # type: ignore
                             50,
@@ -96,13 +99,13 @@ def _parse_face(webmention: Webmention, items: list[dict[str, Any]]) -> Face | N
                 return Face(
                     ap_actor_id=None,
                     url=(
-                        item["properties"]["url"][0]
+                        must_make_abs(item["properties"]["url"][0], webmention.source)
                         if item["properties"].get("url")
                         else webmention.source
                     ),
                     name=item["properties"]["name"][0],
                     picture_url=media.resized_media_url(
-                        make_abs(
+                        must_make_abs(
                             item["properties"]["photo"][0], webmention.source
                         ),  # type: ignore
                         50,
@@ -140,13 +143,23 @@ class WebmentionReply:
                             f"webmention id={webmention.id}"
                         )
                         break
+
+                    if "published" in item["properties"]:
+                        published_at = (
+                            parse_isoformat(item["properties"]["published"][0])
+                            .astimezone(timezone.utc)
+                            .replace(tzinfo=None)
+                        )
+                    else:
+                        published_at = webmention.created_at  # type: ignore
+
                     return cls(
                         face=face,
                         content=item["properties"]["content"][0]["html"],
-                        url=item["properties"]["url"][0],
-                        published_at=parse_isoformat(
-                            item["properties"]["published"][0]
-                        ).replace(tzinfo=None),
+                        url=must_make_abs(
+                            item["properties"]["url"][0], webmention.source
+                        ),
+                        published_at=published_at,
                         in_reply_to=webmention.target,  # type: ignore
                         webmention_id=webmention.id,  # type: ignore
                     )

app/utils/highlight.py

@@ -32,23 +32,22 @@ def highlight(html: str) -> str:
 
         # If this comes from a microblog.pub instance we may have the language
         # in the class name
-        if "class" in code.attrs and code.attrs["class"][0].startswith("language-"):
+        if "data-microblogpub-lexer" in code.attrs:
             try:
-                lexer = get_lexer_by_name(
-                    code.attrs["class"][0].removeprefix("language-")
-                )
+                lexer = get_lexer_by_name(code.attrs["data-microblogpub-lexer"])
             except Exception:
                 lexer = guess_lexer(code_content)
-        else:
-            lexer = guess_lexer(code_content)
 
-        # Replace the code with Pygment output
-        # XXX: the HTML escaping causes issue with Python type annotations
-        code_content = code_content.replace(") -> ", ") -> ")
-        code.parent.replaceWith(
-            BeautifulSoup(
-                phighlight(code_content, lexer, _FORMATTER), "html5lib"
-            ).body.next
-        )
+            # Replace the code with Pygment output
+            # XXX: the HTML escaping causes issue with Python type annotations
+            code_content = code_content.replace(") -> ", ") -> ")
+            code.parent.replaceWith(
+                BeautifulSoup(
+                    phighlight(code_content, lexer, _FORMATTER), "html5lib"
+                ).body.next
+            )
+        else:
+            code.name = "div"
+            code["class"] = code.get("class", []) + ["highlight"]
 
     return soup.body.encode_contents().decode()

app/utils/url.py

@@ -21,6 +21,13 @@ def make_abs(url: str | None, parent: str) -> str | None:
     )
 
 
+def must_make_abs(url: str | None, parent: str) -> str:
+    abs_url = make_abs(url, parent)
+    if not abs_url:
+        raise ValueError("missing URL")
+    return abs_url
+
+
 class InvalidURLError(Exception):
     pass
 

docs/install.md

@@ -191,6 +191,29 @@ http {
 }
 ```
 
+
+## (Advanced) Running on a subdomain
+
+It is possible to run microblogpub on a subdomain (`sub.domain.tld`) while being reachable from the root root domain (`domain.tld`) using the `name@domain.tld` handle.
+
+This requires forwarding/proxying requests from the root domain to the subdomain, for example using NGINX:
+
+```nginx
+location /.well-known/webfinger {
+  add_header Access-Control-Allow-Origin '*';
+  return 301 https://sub.domain.tld$request_uri;
+}
+```
+
+And updating `data/profile.toml` to specify the root domain as the webfinger domain:
+
+```toml
+webfinger_domain = "domain.tld"
+```
+
+Once configured correctly, people will be able to follow you using `name@domain.tld`, while using `sub.domain.tld` for the web interface.
+
+
 ## (Advanced) Running from subpath
 
 It is possible to configure microblogpub to run from subpath.

docs/user_guide.md

@@ -320,7 +320,7 @@ First you need to grab the "ActivityPub actor URL" for your existing account:
 
 ```bash
 # For a Python install
-poetry run inv webfinger username@domain.tld
+poetry run inv webfinger username@instance-you-want-to-move-from.tld
 ```
 
 Edit the config.
@@ -329,7 +329,7 @@ Edit the config.
 
 ```bash
 # For a Docker install
-make account=username@domain.tld webfinger
+make account=username@instance-you-want-to-move-from.tld webfinger
 ```
 
 Edit the config.
@@ -339,11 +339,13 @@ Edit the config.
 And add a reference to your old/existing account in `profile.toml`:
 
 ```toml
-also_known_as = "my@old-account.com"
+also_known_as = "https://instance-you-want-to-move-form.tld/users/username"
 ```
 
 Restart the server, and you should be able to complete the move from your existing account.
 
+Note that if you already have a redirect in place on Mastodon, you may have to remove it before initiating the migration.
+
 ## Import follows from Mastodon
 
 You can import the list of follows/following accounts from Mastodon.