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Codeman maintainer
233f85b170
A laptop that suspends freezes every agent session until it wakes. The new opt-in setting (App Settings > System > Power, off by default, "Only on AC power" on by default) makes the server hold an OS sleep lock for exactly as long as it runs: - Linux: a logind block lock on handle-lid-switch:sleep:idle through systemd-inhibit. The lid needs the low-level handle-lid-switch lock (LidSwitchIgnoreInhibited=yes ignores a plain sleep lock), and polkit grants it only while someone is logged in to the desktop, so a refusal is reported as "denied" and retried every minute. - macOS: caffeinate -i -s -w <pid>. Lid close needs pmset disablesleep, which an optional root helper (scripts/keep-awake-macos.sh, a LaunchDaemon run from a root-owned copy) applies while the server keeps a fresh request file, undoing only a disablesleep it set itself. The lock dies with the server: systemd-inhibit runs cat on a stdin pipe, so any exit (SIGKILL included, and under the unit's KillMode=process) releases it; caffeinate exits with the pid it watches. The installer asks on laptops (default no, never under --yes), and `install.sh keep-awake` turns it on for an existing install. Status is at GET /api/system/keep-awake; a non-admin's value is dropped in multi-user mode. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
63 lines
2.7 KiB
Bash
Executable File
63 lines
2.7 KiB
Bash
Executable File
#!/bin/bash
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# keep-awake-macos.sh: root helper behind Codeman's "Keep this computer awake" on macOS.
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#
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# caffeinate (which the server runs itself, no root) stops idle sleep but not lid-close
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# sleep. Only `pmset -a disablesleep 1` keeps a closed MacBook awake, and that is a
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# machine-wide root setting with no owner process. So this helper, run by the
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# com.codeman.keepawake LaunchDaemon every 20 seconds, applies it while the server asks
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# for it and undoes it when the server stops asking:
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#
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# - The server writes its pid to the request file and rewrites it every 30 seconds
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# while it wants the lid covered (setting on, and on AC when "only on AC" is on).
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# - The request counts only while the file is fresh (under 2 minutes old) AND its pid
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# is alive AND that process belongs to the file's owner. A crashed or hung server
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# therefore releases the lid within about two minutes on its own.
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# - The helper undoes only a disablesleep it set itself (tracked by the .owned file),
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# so an administrator's own `pmset -a disablesleep 1` is never switched off.
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#
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# install.sh copies this file to a ROOT-OWNED path before the daemon runs it; never run
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# it from the user-writable install directory.
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#
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# Usage: keep-awake-macos.sh <request-file>
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# Test hooks (set only by the test suite): CODEMAN_KEEPAWAKE_PMSET, CODEMAN_KEEPAWAKE_STATE_DIR.
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set -u
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REQ="${1:?usage: keep-awake-macos.sh <request-file>}"
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PMSET="${CODEMAN_KEEPAWAKE_PMSET:-/usr/bin/pmset}"
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STATE_DIR="${CODEMAN_KEEPAWAKE_STATE_DIR:-/Library/Application Support/Codeman}"
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OWNED="$STATE_DIR/keep-awake.owned"
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want=0
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# -L: refuse a symlink (root must not be steered to read some other file).
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# find -mmin -2: modified within the last 2 minutes (BSD and GNU find both support it).
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if [ -f "$REQ" ] && [ ! -L "$REQ" ] && [ -n "$(find "$REQ" -mmin -2 2>/dev/null)" ]; then
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pid=$(head -c 32 "$REQ" 2>/dev/null | tr -dc '0-9')
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if [ -n "$pid" ] && kill -0 "$pid" 2>/dev/null; then
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file_uid=$(ls -ln "$REQ" 2>/dev/null | awk '{print $3}')
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pid_uid=$(ps -o uid= -p "$pid" 2>/dev/null | tr -d ' ')
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if [ -n "$file_uid" ] && [ "$file_uid" = "$pid_uid" ]; then
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want=1
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fi
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fi
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fi
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current=$("$PMSET" -g 2>/dev/null | awk '/SleepDisabled/ {print $2; exit}')
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[ -n "$current" ] || current=0
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if [ "$want" = "1" ]; then
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# Already 1 without our marker means an administrator set it: leave it and do not
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# claim it, so releasing later never switches their setting off.
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if [ "$current" != "1" ]; then
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if "$PMSET" -a disablesleep 1; then
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mkdir -p "$STATE_DIR" && : > "$OWNED"
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fi
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fi
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elif [ -f "$OWNED" ]; then
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if [ "$current" = "1" ]; then
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"$PMSET" -a disablesleep 0 || exit 1
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fi
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rm -f "$OWNED"
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fi
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exit 0
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