giles
e8bc228c7f
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Rename all sexp directories, files, identifiers, and references to sx. artdag/ excluded (separate media processing DSL). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
113 lines
3.9 KiB
Python
113 lines
3.9 KiB
Python
"""Username selection flow.
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Users must choose a preferred_username before they can publish.
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This creates their ActorProfile with RSA keys.
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"""
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from __future__ import annotations
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import re
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from quart import (
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Blueprint, request, redirect, url_for, g, abort,
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)
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from shared.services.registry import services
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# Username rules: 3-32 chars, lowercase alphanumeric + underscores
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USERNAME_RE = re.compile(r"^[a-z][a-z0-9_]{2,31}$")
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# Reserved usernames
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RESERVED = frozenset({
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"admin", "administrator", "root", "system", "moderator", "mod",
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"support", "help", "info", "postmaster", "webmaster", "abuse",
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"federation", "activitypub", "api", "static", "media", "assets",
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"well-known", "nodeinfo", "inbox", "outbox", "followers", "following",
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})
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def register(url_prefix="/identity"):
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bp = Blueprint("identity", __name__, url_prefix=url_prefix)
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@bp.get("/choose-username")
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async def choose_username_form():
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if not g.get("user"):
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return redirect(url_for("auth.login_form"))
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# Already has a username?
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actor = await services.federation.get_actor_by_user_id(g.s, g.user.id)
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if actor:
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return redirect(url_for("activitypub.actor_profile", username=actor.preferred_username))
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from shared.sx.page import get_template_context
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from sx.sx_components import render_choose_username_page
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ctx = await get_template_context()
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ctx["actor"] = actor
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return await render_choose_username_page(ctx)
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@bp.post("/choose-username")
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async def choose_username():
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if not g.get("user"):
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abort(401)
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# Already has a username?
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existing = await services.federation.get_actor_by_user_id(g.s, g.user.id)
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if existing:
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return redirect(url_for("activitypub.actor_profile", username=existing.preferred_username))
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form = await request.form
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username = (form.get("username") or "").strip().lower()
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# Validate format
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error = None
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if not USERNAME_RE.match(username):
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error = (
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"Username must be 3-32 characters, start with a letter, "
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"and contain only lowercase letters, numbers, and underscores."
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)
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elif username in RESERVED:
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error = "This username is reserved."
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elif not await services.federation.username_available(g.s, username):
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error = "This username is already taken."
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if error:
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from shared.sx.page import get_template_context
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from sx.sx_components import render_choose_username_page
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ctx = await get_template_context(error=error, username=username)
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ctx["actor"] = None
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return await render_choose_username_page(ctx), 400
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# Create ActorProfile with RSA keys
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display_name = g.user.name or username
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actor = await services.federation.create_actor(
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g.s, g.user.id, username,
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display_name=display_name,
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)
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# Redirect to where they were going, or their new profile
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next_url = request.args.get("next")
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if next_url:
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return redirect(next_url)
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return redirect(url_for("activitypub.actor_profile", username=actor.preferred_username))
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@bp.get("/check-username")
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async def check_username():
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"""HTMX endpoint to check username availability."""
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username = (request.args.get("username") or "").strip().lower()
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if not username:
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return ""
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if not USERNAME_RE.match(username):
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return '<span class="text-red-600">Invalid format</span>'
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if username in RESERVED:
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return '<span class="text-red-600">Reserved</span>'
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available = await services.federation.username_available(g.s, username)
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if available:
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return '<span class="text-green-600">Available</span>'
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return '<span class="text-red-600">Taken</span>'
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return bp
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