Files
saphidandClaude Opus 5.5 14790ac768 Fix the follow-up review's findings
- Pairing saves nothing if it was cancelled while adding the key.
- The ssh stand-in runs under bash: dash refuses job control without a
  terminal, which cost stdin and the process group.
- A server that stops while the tunnel opens fails the attempt (and retries)
  instead of leaving it half-connected.
- The health probe answers within its deadline even when a dead link keeps
  the probe itself waiting.
- A cached version is deleted only if no server runs from it (servers now run
  by absolute path) and it's two weeks unused.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-09-27 11:40:17 +10:00

30 lines
1.1 KiB
Bash
Executable File

#!/bin/bash
# Stand-in for ssh when Frame Control's server runs on the Frame itself
# (FRAME_LOCAL=1, started by the iPhone app). The server and its helpers call
# `ssh [options] frame COMMAND`, and rsync calls it as its transport; here that
# means: run COMMAND in the home directory, as ssh would, with the same stdin.
while [ $# -gt 0 ]; do
case "$1" in
-[bcDEeFIiJLlmOoPpQRSWwB]) shift 2 ;; # options that take a value
-?*) shift ;;
*) break ;;
esac
done
[ $# -gt 0 ] && shift # the host alias
cd "$HOME" || exit 255
[ $# -eq 0 ] && exit 0 # -N: nothing to run
# Stopping ssh ends everything the command started (sshd hangs up the session).
# To do the same, run COMMAND as its own process group and pass on a TERM, HUP
# or INT to all of it, so e.g. a live-video ffmpeg can't outlive its stream.
set -m # job control (bash allows it without a terminal): own process group, and stdin kept
"${SHELL:-/bin/sh}" -c "$*" &
child=$!
trap 'kill -TERM -- "-$child" 2>/dev/null' TERM HUP INT
wait "$child"
status=$?
while kill -0 "$child" 2>/dev/null; do # a trapped signal ends `wait` early
wait "$child"
status=$?
done
exit "$status"