467 lines
18 KiB
Bash
Executable file
467 lines
18 KiB
Bash
Executable file
#!/bin/sh
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# rclaude — durable Claude Code sessions, local or remote.
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#
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# Two layers of resilience:
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# 1. tmux on <host> survives terminal/transport drops.
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# 2. `claude --continue` resumes the per-directory session from disk after
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# the host itself dies (reboot, crash, OOM).
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#
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# Each invocation starts a fresh Claude session in a new named tmux window.
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# To reattach an existing session: `rclaude resume [pattern]`
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# To resume a Claude conversation from disk after host loss: `rclaude resume` picks
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# up the on-disk session via `claude --continue`.
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#
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# Permission mode: --dangerously-skip-permissions is on by default. Override
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# with RCLAUDE_PERMS=default (or any --permission-mode value).
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#
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# Tmux config sync: the repo's canonical tmux.conf is pushed to the target
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# host's ~/.tmux.d/session-tools.conf on every launch and source-lined from
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# ~/.tmux.conf. Disable with RCLAUDE_SYNC_TMUX=0, or set =once to only write
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# if the source-line isn't already present.
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#
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# Hosts scanned by `list`/`resume` default to: local + apricot + plum (the
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# non-local one is dialed; the local one is rendered as "local"). Override
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# with RCLAUDE_HOSTS="apricot black quinn-vps".
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#
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# Usage:
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# rclaude # local, $PWD
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# rclaude . # local, $PWD
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# rclaude <host> # remote: $PWD mirrored under remote $HOME
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# rclaude <host> . # same as above (explicit form)
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# rclaude <host> <dir> # remote (or local) at <dir>
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# rclaude list # tmux + per-project disk view
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# rclaude list sessions # tmux + per-session disk view (uuid + snippet)
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# rclaude resume [pattern] # reattach / resume by uuid prefix, snippet,
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# # tmux name, or cwd substring (interactive
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# # picker on >1 match)
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#
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# Mirror semantics: if local $PWD is $HOME/X/Y, the remote dir defaults to
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# ~/X/Y on the remote (the remote's $HOME, not $HOME from this machine).
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# If $PWD is outside $HOME, falls back to the remote's $HOME.
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set -eu
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# ---------------------------------------------------------------------------
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# Helpers
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# ---------------------------------------------------------------------------
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# Resolve $0 to its real path, correctly handling relative symlinks at each hop.
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resolve_self() {
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_rs=$0
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while [ -L "$_rs" ]; do
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_link=$(readlink "$_rs")
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case "$_link" in
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/*) _rs="$_link" ;;
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*) _rs="$(dirname "$_rs")/$_link" ;;
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esac
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done
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printf '%s' "$_rs"
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}
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is_local() {
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case $1 in
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local|localhost|127.0.0.1|::1) return 0 ;;
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esac
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[ "$1" = "$(hostname)" ] && return 0
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[ "$1" = "$(hostname -s 2>/dev/null)" ] && return 0
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return 1
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}
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# List claude-* tmux sessions on a host. Output one row per session:
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# <host>\ttmux\t<session_name>\t<detail_from_tmux_ls>
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list_tmux_on() {
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_host=$1
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if is_local "$_host"; then
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command -v tmux >/dev/null 2>&1 || return 0
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_raw=$(tmux ls 2>/dev/null || true)
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else
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_raw=$(ssh -o BatchMode=yes -o ConnectTimeout=3 "$_host" 'tmux ls 2>/dev/null' || true)
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fi
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# tmux ls lines look like: claude-foo: 1 windows (created ...) [80x24]
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printf %s "$_raw" | awk -v host="$_host" '
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/^claude-/ {
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name=$1; sub(/:$/, "", name);
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$1="";
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sub(/^[[:space:]]+/, "");
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printf "%s\ttmux\t%s\t%s\n", host, name, $0
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}
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'
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}
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# List on-disk Claude project sessions on a host (via _claude-projects helper).
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# Output one row per project:
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# <host>\tdisk\t<cwd>\t<sessions=N, last used <relative-time>>
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list_disk_on() {
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_host=$1
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_helper_dir=$(dirname "$(resolve_self)")
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if is_local "$_host"; then
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_raw=$("$_helper_dir/_claude-projects" 2>/dev/null || true)
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else
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# Send the helper over stdin so we don't depend on a pre-installed copy
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# on the remote (and to dodge quoting issues).
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_raw=$(ssh -o BatchMode=yes -o ConnectTimeout=3 "$_host" 'python3 -' < "$_helper_dir/_claude-projects" 2>/dev/null || true)
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fi
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_now=$(date +%s)
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printf %s "$_raw" | awk -F'\t' -v host="$_host" -v now="$_now" '
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function rel(secs, abs, s) {
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abs = (secs < 0) ? -secs : secs
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if (abs < 60) s = abs " seconds"
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else if (abs < 3600) s = int(abs/60) " min"
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else if (abs < 86400) s = int(abs/3600) " hours"
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else s = int(abs/86400) " days"
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return s " ago"
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}
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NF >= 3 {
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printf "%s\tdisk\t%s\tsessions=%s, last used %s\n", host, $2, $3, rel(now - $1)
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}
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'
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}
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# List on-disk Claude sessions per UUID on a host (via _claude-projects --sessions).
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# Output one row per session jsonl:
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# <host>\tsession\t<uuid>\t<snippet>\t<cwd> · <relative-time>
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list_sessions_on() {
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_host=$1
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_helper_dir=$(dirname "$(resolve_self)")
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if is_local "$_host"; then
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_raw=$("$_helper_dir/_claude-projects" --sessions 2>/dev/null || true)
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else
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_raw=$(ssh -o BatchMode=yes -o ConnectTimeout=3 "$_host" 'python3 - --sessions' < "$_helper_dir/_claude-projects" 2>/dev/null || true)
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fi
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_now=$(date +%s)
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printf %s "$_raw" | awk -F'\t' -v host="$_host" -v now="$_now" '
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function rel(secs, abs, s) {
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abs = (secs < 0) ? -secs : secs
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if (abs < 60) s = abs " seconds"
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else if (abs < 3600) s = int(abs/60) " min"
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else if (abs < 86400) s = int(abs/3600) " hours"
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else s = int(abs/86400) " days"
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return s " ago"
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}
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NF >= 3 {
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snippet = ($4 == "" ? "(no user text)" : $4)
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printf "%s\tsession\t%s\t%s\t%s · %s\n", host, $2, snippet, $3, rel(now - $1)
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}
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'
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}
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# Combined enumeration: tmux first (live), then on-disk per-project.
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list_all_on() {
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list_tmux_on "$1"
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list_disk_on "$1"
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}
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# Resume-search enumeration: tmux + per-session UUIDs/snippets.
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list_search_on() {
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list_tmux_on "$1"
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list_sessions_on "$1"
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}
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# Push the canonical session-tools tmux fragment to <host> and ensure
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# ~/.tmux.conf sources it. Idempotent; runs on every launch so config changes
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# in the repo propagate without re-running install.sh on each host.
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#
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# Controlled by RCLAUDE_SYNC_TMUX:
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# 1 (default) auto-sync on every launch
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# 0 never sync (e.g. host has a hand-tuned tmux config you don't
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# want clobbered by a stray source-file line)
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# once sync only if the source-file line isn't already present;
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# useful on hosts where you've audited the fragment once and
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# don't want repeated writes
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#
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# Silent no-op if the repo fragment can't be located.
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sync_tmux_conf() {
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_host=$1
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_mode=${RCLAUDE_SYNC_TMUX:-1}
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case $_mode in
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0|off|no|false) return 0 ;;
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esac
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_self=$(resolve_self)
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_repo=$(cd "$(dirname "$_self")/.." 2>/dev/null && pwd)
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_frag="$_repo/tmux.conf"
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[ -f "$_frag" ] || return 0
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_guard=""
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case $_mode in
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once) _guard='grep -q "session-tools.conf" ~/.tmux.conf 2>/dev/null && exit 0;' ;;
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esac
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_remote_cmd="${_guard} "'mkdir -p ~/.tmux.d && cat > ~/.tmux.d/session-tools.conf && { grep -q "session-tools.conf" ~/.tmux.conf 2>/dev/null || printf "source-file ~/.tmux.d/session-tools.conf\n" >> ~/.tmux.conf; } && tmux source-file ~/.tmux.conf 2>/dev/null || true'
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if is_local "$_host"; then
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sh -c "$_remote_cmd" < "$_frag" 2>/dev/null || true
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else
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ssh -o BatchMode=yes -o ConnectTimeout=5 "$_host" "$_remote_cmd" < "$_frag" 2>/dev/null || true
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fi
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}
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# All hosts to scan for list/resume. Defaults to "apricot plum" so resume
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# discovery works symmetrically from either host (the local one is rendered
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# as "local" and remote ones are filtered to drop any host that matches the
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# current machine).
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scan_hosts() {
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printf "local\n"
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for h in ${RCLAUDE_HOSTS:-apricot plum}; do
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is_local "$h" && continue
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printf "%s\n" "$h"
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done
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}
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# ---------------------------------------------------------------------------
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# Subcommands
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# ---------------------------------------------------------------------------
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cmd_list() {
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_mode=${1:-all} # all | tmux | disk | sessions
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printf "%-10s %-7s %-60s %s\n" "HOST" "KIND" "SESSION/CWD/UUID" "DETAIL"
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scan_hosts | while IFS= read -r h; do
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case $_mode in
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tmux) list_tmux_on "$h" ;;
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disk) list_disk_on "$h" ;;
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sessions|--sessions)
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list_tmux_on "$h"
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list_sessions_on "$h" ;;
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*) list_all_on "$h" ;;
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esac | awk -F'\t' '{
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# Tmux/disk rows: $3 is the display target. Session rows: $3=uuid,
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# $4=snippet (show snippet, abbreviate uuid into DETAIL via $5).
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if ($2 == "session") {
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uuid_short = substr($3, 1, 8)
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detail = (NF >= 5 ? $5 : "") " [" uuid_short "]"
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printf "%-10s %-7s %-60.60s %s\n", $1, $2, $4, detail
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} else {
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printf "%-10s %-7s %-60.60s %s\n", $1, $2, $3, $4
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}
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}'
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done
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}
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# Resume strategy:
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# - 1 match → attach directly
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# - 2+ matches → single-key picker (1-9 then a-z, max 35)
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# - matches a tmux row → ssh+tmux attach (preserves the live conversation)
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# - matches a session UUID → ssh+tmux+claude --resume <uuid> at recorded cwd
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# - matches a snippet/cwd → same as session (the row identifies a UUID)
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#
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# Pattern matching is case-insensitive substring across host/kind/uuid/snippet/cwd.
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# An empty pattern lists everything (interactive picker).
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cmd_resume() {
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_pattern=${1:-}
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_matches=$(scan_hosts | while IFS= read -r h; do list_search_on "$h"; done)
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if [ -n "$_pattern" ]; then
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_matches=$(printf '%s\n' "$_matches" | grep -F -i -- "$_pattern" || true)
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fi
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_count=0
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[ -n "$_matches" ] && _count=$(printf '%s\n' "$_matches" | wc -l | tr -d ' ')
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if [ "$_count" -eq 0 ]; then
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echo "no matching sessions${_pattern:+ for pattern '$_pattern'}" >&2
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exit 1
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fi
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if [ "$_count" -gt 1 ]; then
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_keys="123456789abcdefghijklmnopqrstuvwxyz"
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if [ "$_count" -gt 35 ]; then
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echo "too many matches ($_count); refine pattern" >&2
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exit 1
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fi
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# For sessions, display the human-readable snippet (col 4) rather
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# than the bare UUID (col 3); for tmux/disk the existing col 3 is
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# already the right thing to show.
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_fmt_row='function display(){ if ($2 == "session") return $4 " [" substr($3,1,8) "]"; return $3 } { printf "%-10s %-7s %s", $1, $2, display() }'
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if [ ! -t 0 ] || [ ! -t 2 ]; then
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echo "multiple matches and no tty for picker; refine pattern:" >&2
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printf '%s\n' "$_matches" | awk -F'\t' "$_fmt_row"'{printf "\n"}' >&2
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exit 1
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fi
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_i=0
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printf '%s\n' "$_matches" | while IFS= read -r _line; do
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_i=$((_i + 1))
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_k=$(printf %s "$_keys" | cut -c"$_i")
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printf ' [%s] %s\n' "$_k" \
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"$(printf %s "$_line" | awk -F'\t' "$_fmt_row")" >&2
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done
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_last_key=$(printf %s "$_keys" | cut -c"$_count")
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printf 'select [1-%s]: ' "$_last_key" >&2
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_old=$(stty -g 2>/dev/null || true)
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stty -icanon -echo min 1 time 0 2>/dev/null || true
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_key=$(dd bs=1 count=1 2>/dev/null </dev/tty || true)
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[ -n "$_old" ] && stty "$_old" 2>/dev/null || true
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printf '%s\n' "$_key" >&2
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_idx=0
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_c=1
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while [ "$_c" -le "$_count" ]; do
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if [ "$(printf %s "$_keys" | cut -c"$_c")" = "$_key" ]; then
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_idx=$_c; break
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fi
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_c=$((_c + 1))
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done
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if [ "$_idx" -eq 0 ]; then
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echo "rclaude: invalid selection: '$_key'" >&2
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exit 1
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fi
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_matches=$(printf '%s\n' "$_matches" | sed -n "${_idx}p")
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fi
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_host=$(printf '%s\n' "$_matches" | awk -F'\t' 'NR==1{print $1}')
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_kind=$(printf '%s\n' "$_matches" | awk -F'\t' 'NR==1{print $2}')
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_target=$(printf '%s\n' "$_matches" | awk -F'\t' 'NR==1{print $3}')
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# Sessions carry their cwd in column 5 (formatted "<cwd> · <rel-time>");
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# extract the cwd half for the launch dir.
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_session_cwd=$(printf '%s\n' "$_matches" | awk -F'\t' 'NR==1{print $5}' | awk -F' · ' '{print $1}')
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case $_kind in
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tmux)
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if is_local "$_host"; then
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exec tmux attach -t "$_target"
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else
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exec ssh -t "$_host" tmux attach -t "$_target"
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fi
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;;
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disk)
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# Spawn tmux + claude --continue at the recorded cwd.
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RCLAUDE_RESUME=1 exec "$0" "$_host" "$_target"
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;;
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session)
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# Spawn tmux + claude --resume <uuid> at the session's recorded cwd.
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if [ -z "$_session_cwd" ]; then
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echo "rclaude: session $_target has no recorded cwd" >&2
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exit 1
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fi
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RCLAUDE_RESUME_ID=$_target exec "$0" "$_host" "$_session_cwd"
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;;
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esac
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}
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# ---------------------------------------------------------------------------
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# Dispatch
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# ---------------------------------------------------------------------------
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cmd_version() {
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_self=$(resolve_self)
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_repo=$(cd "$(dirname "$_self")/.." 2>/dev/null && pwd)
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if [ -d "$_repo/.git" ] && command -v git >/dev/null 2>&1; then
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_sha=$(git -C "$_repo" rev-parse --short HEAD 2>/dev/null)
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_dirty=""
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[ -n "$(git -C "$_repo" status --porcelain 2>/dev/null)" ] && _dirty="-dirty"
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_date=$(git -C "$_repo" log -1 --format=%cd --date=short HEAD 2>/dev/null)
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printf 'rclaude (session-tools) %s%s %s %s\n' "$_sha" "$_dirty" "$_date" "$_repo"
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else
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printf 'rclaude (session-tools) %s\n' "$_repo"
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fi
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}
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cmd_help() {
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# Extract the leading comment block (everything from line 2 up to the
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# first blank line after `# Usage:`), strip leading "# " / "#", and print.
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_self=$(resolve_self)
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awk '
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NR==1 { next } # skip shebang
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/^[^#]/ { exit } # stop at first non-comment line
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{ sub(/^# ?/, ""); print }
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' "$_self"
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}
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case ${1:-} in
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list) shift; cmd_list "$@"; exit ;;
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resume) shift; cmd_resume "$@"; exit ;;
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-v|--version) cmd_version; exit ;;
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-h|--help|help) cmd_help; exit ;;
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esac
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# ---------------------------------------------------------------------------
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# Default behavior: launch (or reattach to) a session.
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# ---------------------------------------------------------------------------
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# Argument resolution:
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# `rclaude` → local, $PWD
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# `rclaude .` → local, $PWD
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# `rclaude <host>` → host, default dir (~ remote, $PWD local)
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# `rclaude <host> <dir>` → host, dir (with `.` resolving to $PWD)
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if [ $# -eq 0 ] || [ "${1:-}" = "." ]; then
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host=local
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dir=$PWD
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else
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host=$1
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dir=${2:-}
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fi
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# Defaults + `.` expansion now that we know whether we're local or remote.
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if is_local "$host"; then
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case ${dir:-.} in
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.|"") dir=$PWD ;;
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esac
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else
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# Remote default: mirror local $PWD relative to $HOME onto the remote's
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# $HOME. Same behavior for omitted dir or explicit `.`. Falls back to
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# remote $HOME if local $PWD isn't under $HOME.
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if [ "$dir" = "." ] || [ -z "$dir" ]; then
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case $PWD in
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"$HOME") dir=\~ ;;
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"$HOME"/*) _rel=${PWD#"$HOME"/}; dir="~/$_rel" ;;
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*) dir=\~ ;;
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esac
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fi
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fi
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slug=$(printf %s "$dir" | sed -e 's|^[~/]*||' -e 's|[^A-Za-z0-9]|-|g')
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[ -z "$slug" ] && slug=home
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session="claude-$(whoami)-${slug}-$(date +%s)"
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perms=${RCLAUDE_PERMS:-bypass}
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case $perms in
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bypass) flag="--dangerously-skip-permissions" ;;
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*) flag="--permission-mode $perms" ;;
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esac
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# Inner command for the tmux pane. If claude exits nonzero OR ends in under
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# 2 seconds (usually a misconfig: missing dir, locked session, crashed
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# claude), the pane stays open with the exit code visible instead of
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# silently dying and dragging the whole tmux session + ssh transport down
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# with it. A real interactive session lasts much longer than 2s, so a clean
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# /exit closes the pane normally.
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build_inner() {
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# Single-line, single-quote-safe. Variables prefixed with rc_ to avoid
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# collision with anything in the user's shell.
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#
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# Note: launch path uses plain `claude` (fresh session). Each invocation
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# creates a new uniquely-named tmux session. Reattach to a live session
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# via `rclaude resume <pattern>`; disk-resume after host death likewise.
|
|
_resume_flag=""
|
|
if [ -n "${RCLAUDE_RESUME_ID:-}" ]; then
|
|
_resume_flag="--resume ${RCLAUDE_RESUME_ID}"
|
|
elif [ "${RCLAUDE_RESUME:-0}" = "1" ]; then
|
|
_resume_flag="--continue"
|
|
fi
|
|
printf '%s' \
|
|
"cd ${1} && rc_t=\$(date +%s); claude ${_resume_flag} ${flag}; rc_ec=\$?; " \
|
|
"rc_e=\$(date +%s); rc_d=\$((rc_e - rc_t)); " \
|
|
"if [ \$rc_ec -ne 0 ] || [ \$rc_d -lt 2 ]; then " \
|
|
"printf '\\n[rclaude] claude exited in %ds with code %d\\n' \$rc_d \$rc_ec; " \
|
|
"printf '[rclaude] press enter to close pane (or Ctrl-b d to detach)... '; " \
|
|
"read rc_; fi"
|
|
}
|
|
|
|
if is_local "$host"; then
|
|
if ! command -v tmux >/dev/null 2>&1; then
|
|
echo "rclaude: tmux not installed locally — install via 'brew install tmux' (macOS) or your package manager" >&2
|
|
exit 1
|
|
fi
|
|
if ! cd "$dir" 2>/dev/null; then
|
|
echo "rclaude: local directory not found: $dir" >&2
|
|
exit 1
|
|
fi
|
|
sync_tmux_conf local
|
|
exec tmux new-session -s "$session" "$(build_inner "$dir")"
|
|
fi
|
|
|
|
# Remote: pre-flight the directory so a typo or missing path fails loudly
|
|
# here instead of silently killing the tmux pane and closing the ssh
|
|
# transport (which looks like a generic 'Connection closed' to the user).
|
|
if ! ssh -o BatchMode=yes -o ConnectTimeout=5 "$host" "test -d ${dir}" 2>/dev/null; then
|
|
echo "rclaude: directory not found on $host: $dir" >&2
|
|
case $dir in
|
|
*@proj/*|*@apps/*|*@pkg/*)
|
|
echo " hint: '@proj/@apps/@pkg' are Claude-instruction aliases, not real shell paths." >&2
|
|
echo " See ~/.claude/instructions/project-paths.md for the real ~/Code/<bucket>/<project> mapping." >&2
|
|
;;
|
|
esac
|
|
exit 1
|
|
fi
|
|
|
|
sync_tmux_conf "$host"
|
|
inner=$(build_inner "$dir")
|
|
exec ssh -t "$host" "tmux new-session -s '${session}' \"${inner}\""
|