Private
Public Access
ksmithandClaude Sonnet 5
760d2cf5dd
Slack/Discord-style link unfurling: the first http(s) URL in a message's content gets a small preview card (title/description/image/site name) fetched from the page's Open Graph tags. Backend: - Message.preview_url (extracted at create/edit time, cheap regex, no I/O) points at a link_previews cache row keyed by URL -- the same URL posted in different messages/rooms fetches once, and a failed fetch is cached too so a dead URL isn't retried on every reference. - The actual fetch runs in a background asyncio.create_task from broadcast_new_message/broadcast_message_update, on its own DB session, so a slow third-party site never delays message delivery. A separate "link_preview" WS envelope carries the result once it resolves. - SSRF protection reuses app/services/ssrf.py's validate_target_url (renamed from UnsafeWebhookUrlError to UnsafeUrlError now that it's shared with webhooks), but re-validates before every hop of a redirect chain rather than once up front -- redirects are followed manually so each intermediate URL is checked before it's ever connected to. - Parsed with stdlib html.parser -- no new dependency. Frontend: a LinkPreviewCard rendered under message content when present, patched into state live via the new WS envelope and included in message history for reloads. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
47 lines
1.4 KiB
Python
47 lines
1.4 KiB
Python
from app.models.admin_audit_log import AdminAuditLog
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from app.models.api_token import ApiToken
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from app.models.base import Base
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from app.models.custom_theme import CustomTheme
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from app.models.event_subscription import EventSubscription
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from app.models.invite import InviteStatus
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from app.models.link_preview import LinkPreview
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from app.models.membership import RoomMembership, RoomRole
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from app.models.message import Message
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from app.models.message_file import MessageFile
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from app.models.message_image import MessageImage
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from app.models.message_mention import MessageMention
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from app.models.message_reaction import MessageReaction
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from app.models.password_reset import PasswordReset
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from app.models.push_subscription import PushSubscription
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from app.models.room import Room
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from app.models.site_invite import SiteInvite
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from app.models.smtp_settings import SmtpSettings
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from app.models.upload_settings import UploadSettings
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from app.models.user import User
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from app.models.webhook_incoming import WebhookIncoming
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__all__ = [
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"Base",
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"User",
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"Room",
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"RoomMembership",
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"RoomRole",
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"Message",
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"MessageFile",
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"MessageImage",
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"MessageMention",
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"MessageReaction",
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"InviteStatus",
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"PasswordReset",
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"SiteInvite",
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"SmtpSettings",
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"UploadSettings",
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"PushSubscription",
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"AdminAuditLog",
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"ApiToken",
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"WebhookIncoming",
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"EventSubscription",
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"CustomTheme",
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"LinkPreview",
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]
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