flex-auth/tools/verify-posture.sh

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#!/usr/bin/env bash
set -euo pipefail
root="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
declaration="$root/tenancy.yaml"
main="$root/cmd/flex-auth/main.go"
axis_value() {
local block="$1" axis="$2"
awk -v block="$block" -v axis="$axis" '
$1 == block ":" { in_block=1; next }
in_block && $1 ~ /^(current|implemented|target):$/ { exit }
in_block && $1 == axis ":" { gsub(/[^0-9]/, "", $2); print $2; exit }
' "$declaration"
}
current_a="$(axis_value current A)"
implemented_a="$(axis_value implemented A)"
current_i="$(axis_value current I)"
implemented_i="$(axis_value implemented I)"
declared_a="${implemented_a:-$current_a}"
declared_i="${implemented_i:-$current_i}"
fail() {
echo "posture drift: $*" >&2
exit 1
}
if grep -q 'authenticator.Authorize' "$main"; then
[[ "${declared_a:-0}" -ge 2 ]] || fail "caller authentication exists but current/implemented A is below 2"
for manifest in deploy/flex-auth-user-engine.yaml deploy/flex-auth-tenant-engine.yaml; do
grep -q -- '--caller-auth-mode' "$root/$manifest" || fail "$manifest omits caller auth mode"
grep -q 'enforce' "$root/$manifest" || fail "$manifest does not select enforce mode"
grep -q -- '--caller-binding' "$root/$manifest" || fail "$manifest omits the exact system binding"
done
[[ -f "$root/deploy/caller-auth-rbac.yaml" ]] || fail "TokenReview RBAC manifest is absent"
else
[[ "${declared_a:-0}" -lt 2 ]] || fail "A2 is declared without a caller-authentication choke point"
fi
if grep -R --include='*.go' --exclude='*_test.go' -q 'tenantengine\.' "$root"; then
[[ "${declared_i:-0}" -ge 3 ]] || fail "tenant-engine is called but I3 is not declared"
else
[[ "${declared_i:-0}" -lt 3 ]] || fail "I3 is declared without a non-test tenant-engine caller"
fi
if grep -qE '^ R: "?n/a"?' "$declaration"; then
for manifest in deploy/flex-auth-user-engine.yaml deploy/flex-auth-tenant-engine.yaml; do
! grep -q -- '--log' "$root/$manifest" || fail "$manifest persists a decision log while R is n/a"
! grep -q 'persistentVolumeClaim:' "$root/$manifest" || fail "$manifest mounts persistent storage while R is n/a"
done
fi
echo "posture declaration matches source and desired deployment controls"