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Nomarchy/core/system/scripts/nomarchy-setup-fido2
Bernardo Magri dc9e74ca12
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fix(scripts): use mktemp for state.json writes, not a fixed /tmp path
Ten state-mutating sites across seven scripts wrote through a predictable,
world-writable temp path (`/tmp/state.json`, `/tmp/system-state.json`)
before the atomic `sudo mv`. Because the `>` redirect runs as the invoking
user (sudo doesn't cover redirects), the shared fixed path is a symlink/
TOCTOU target and collides if two of these run concurrently. Switch each
to a per-invocation `mktemp`; the atomic rename into place is unchanged.
nomarchy-theme-set already used a temp var for its home-state write — this
makes its system-state write consistent and cleans the temp up on failure.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-05-30 21:05:04 +01:00

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#!/usr/bin/env bash
set -e
# Configure FIDO2 support declaratively for Nomarchy NixOS.
STATE_FILE="/etc/nixos/state.json"
if [[ "--remove" == $1 ]]; then
tmp=$(mktemp); sudo jq '.features.fido2 = false' "$STATE_FILE" > "$tmp" && sudo mv "$tmp" "$STATE_FILE"
echo "FIDO2 support disabled. Applying changes..."
sudo nomarchy-sys-update
exit 0
fi
tmp=$(mktemp); sudo jq '.features.fido2 = true' "$STATE_FILE" > "$tmp" && sudo mv "$tmp" "$STATE_FILE"
echo "FIDO2 support enabled. Applying changes..."
sudo nomarchy-sys-update
# Enrollment is still an imperative action
if command -v pamu2fcfg &> /dev/null; then
echo "Let's register your FIDO2 key now."
mkdir -p ~/.config/Yubico
pamu2fcfg > ~/.config/Yubico/u2f_keys
echo "FIDO2 key registered."
else
echo "pamu2fcfg not found. It will be available after the next reboot or sys-update."
fi