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Add /force: host oversized videos as temporary 24h links

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When a posted video is too long (>1h, probed up front) or a normal download
fails as too-big/timeout, the bot offers /force. Replying /force downloads the
full video off-loop (separate slot, no size cap, --max-filesize 10G), uploads it
via rsync/SSH to a web docroot, and posts a tokenized link auto-deleted after 24h
by an hourly sweep (also evicts oldest past 10 GB; remote-clock TTL; only ever
removes its own token dirs).

Hosting target is env-configured (FORCE_REMOTE/FORCE_REMOTE_DIR/FORCE_BASE_URL/
FORCE_SSH_PORT/FORCE_SSH_KEY) so published code carries no infra details; the
feature self-disables when unset (probe is skipped too, so normal posting is
unchanged). Staged on disk (not tmpfs), self-heals orphaned staging dirs, and
re-arms the offer on transient failure. See signal-bot.service.example.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
James Price
2026-06-15 20:42:37 -04:00
parent fd0da1a59e
commit 12b1f2f03d
2 changed files with 343 additions and 12 deletions
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signal-bot.service.example
+9
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@@ -12,6 +12,15 @@ Environment=SIGNAL_PHONE_NUMBER=+15551234567
Environment=SIGNAL_SERVICE=127.0.0.1:8080
# Optional: comma-separated numbers allowed to run /cookies (admin command).
# Environment=BOT_ADMINS=+15551234567
# Optional: enable /force, which hosts oversized videos as temporary links.
# The bot rsyncs the file (over SSH) into a web-served directory and posts the URL;
# an hourly job deletes anything older than 24h and evicts oldest past 10 GB.
# Leave unset to disable /force. All three of REMOTE/REMOTE_DIR/BASE_URL are required.
# Environment=FORCE_REMOTE=user@webhost # ssh target that can write the docroot
# Environment=FORCE_REMOTE_DIR=/var/www/site/media # docroot on that host
# Environment=FORCE_BASE_URL=https://site/media # public URL serving that docroot
# Environment=FORCE_SSH_PORT=22 # ssh port (default 22)
# Environment=FORCE_SSH_KEY=/home/YOUR_USER/.ssh/id_ed25519 # ssh identity (optional)
ExecStart=/home/YOUR_USER/signal-bot/venv/bin/python bot.py
# always (not on-failure): the bot's library swallows exceptions in its own run
# loop and never exits non-zero even when wedged, so on-failure would never bounce it.