admin
9e292958c2
The ISO build now writes the minted throwaway root plaintext to a 0600 sibling file (<iso>.rootpw.txt: password + ISO name + build date) — the single record of truth. Never stdout/logs/manifest; the manifest carries only a pointer line. OUT_ISO naming hoisted above the mint (the sibling is named after the ISO); the mint itself and ROOT_PLAIN's lifetime are unchanged beyond the one file write. FELHOM_ISO_KEEP_WORK=1 debug escape added for the harness. New test/rootpw-emission.sh: dry-run emission, 0600, plaintext<->answer-hash cross-check (openssl -6 -salt), no plaintext on stdout, manifest-heredoc guard. Red-proof run: plaintext injected into the manifest heredoc -> harness FAILs -> restored. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01UuFPHmHNrCJj1VhY6QdDMU
76 lines
4.3 KiB
Bash
Executable File
76 lines
4.3 KiB
Bash
Executable File
#!/bin/bash
|
|
# rootpw-emission.sh — R-61 slice 1 regression harness for build-felhom-iso.sh's root-password
|
|
# emission. Runs ON THE BUILD HOST (needs docker + the assistant image present for the build
|
|
# script's preflight, but --dry-run never starts a container). Asserts, against a real dry-run
|
|
# with a fake source ISO:
|
|
# 1. the 0600 sibling <iso>.rootpw.txt exists and names the ISO it belongs to;
|
|
# 2. its plaintext MATCHES the hash actually rendered into answer.toml
|
|
# (openssl passwd -6 -salt <extracted> cross-check — file <-> answer, not file <-> itself);
|
|
# 3. the plaintext appears NOWHERE in the build's stdout/stderr;
|
|
# 4. the manifest heredoc in the build script carries the rootpw.txt POINTER and never
|
|
# references the plaintext variable (the manifest gets pasted into committed REPORTs —
|
|
# the plaintext must be structurally unable to ride along).
|
|
# Red-proof (documented, run manually): add `root-password-plain : ${ROOT_PLAIN}` to the manifest
|
|
# heredoc -> assertion 4 fails -> restore.
|
|
set -uo pipefail
|
|
HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
|
|
BUILD="$HERE/../build-felhom-iso.sh"
|
|
fail=0
|
|
say() { echo "TEST: $*"; }
|
|
check() { if eval "$2"; then echo " ok: $1"; else echo " FAIL: $1"; fail=1; fi; }
|
|
|
|
SCRATCH="$(mktemp -d "${TMPDIR:-/tmp}/felhom-rootpw-test.XXXXXX")"
|
|
trap 'chmod -R u+w "$SCRATCH" 2>/dev/null; rm -rf "$SCRATCH"' EXIT
|
|
mkdir -p "$SCRATCH/tmp" "$SCRATCH/out"
|
|
|
|
# fake source ISO (the dry run only sha-verifies it; nothing reads its content as an ISO)
|
|
FAKE_ISO="$SCRATCH/proxmox-ve_9.9-1.iso"
|
|
head -c 65536 /dev/urandom > "$FAKE_ISO"
|
|
FAKE_SHA="$(sha256sum "$FAKE_ISO" | awk '{print $1}')"
|
|
|
|
say "dry-run build (pairing, nested-canary) with FELHOM_ISO_KEEP_WORK=1"
|
|
BUILD_LOG="$SCRATCH/build.log"
|
|
FELHOM_ISO_KEEP_WORK=1 TMPDIR="$SCRATCH/tmp" bash "$BUILD" \
|
|
--pve-iso "$FAKE_ISO" --iso-sha256 "$FAKE_SHA" \
|
|
--profile "$HERE/../profiles/nested-canary.profile" \
|
|
--pairing --out "$SCRATCH/out" --dry-run > "$BUILD_LOG" 2>&1
|
|
rc=$?
|
|
check "dry-run exited 0" "[ $rc -eq 0 ]"
|
|
|
|
ROOTPW_FILE="$(ls "$SCRATCH"/out/*.rootpw.txt 2>/dev/null | head -1)"
|
|
check "rootpw sibling file exists" "[ -n \"$ROOTPW_FILE\" ] && [ -f \"$ROOTPW_FILE\" ]"
|
|
check "rootpw file mode is 0600" "[ \"\$(stat -c %a \"$ROOTPW_FILE\")\" = 600 ]"
|
|
|
|
PW="$(awk '{print $1}' "$ROOTPW_FILE" 2>/dev/null)"
|
|
ISO_NAME="$(awk '{print $2}' "$ROOTPW_FILE" 2>/dev/null)"
|
|
check "password field has the throwaway shape" "[[ \"$PW\" == felhom-throwaway-* ]]"
|
|
check "file names the ISO it belongs to" "[ \"$ISO_NAME.rootpw.txt\" = \"$(basename "$ROOTPW_FILE")\" ]"
|
|
|
|
# cross-check: the plaintext must correspond to the hash RENDERED INTO THE ANSWER (kept workspace)
|
|
ANSWER="$(ls "$SCRATCH"/tmp/felhom-iso.*/answer.toml 2>/dev/null | head -1)"
|
|
check "kept workspace has answer.toml" "[ -n \"$ANSWER\" ] && [ -f \"$ANSWER\" ]"
|
|
# the hash contains literal $-signs — compare OUTSIDE check()'s eval and pass only a verdict in
|
|
HASH="$(sed -n 's/^root-password-hashed = "\(.*\)"$/\1/p' "$ANSWER" 2>/dev/null)"
|
|
SALT="$(printf '%s' "$HASH" | awk -F'$' '{print $3}')"
|
|
RECOMPUTED="$(openssl passwd -6 -salt "$SALT" "$PW" 2>/dev/null)"
|
|
HASH_MATCH=no; [ -n "$HASH" ] && [ "$RECOMPUTED" = "$HASH" ] && HASH_MATCH=yes
|
|
check "plaintext matches the answer's rendered hash" "[ \"$HASH_MATCH\" = yes ]"
|
|
|
|
# the plaintext must never surface on stdout/stderr
|
|
check "plaintext absent from build stdout/stderr" "! grep -qF \"$PW\" \"$BUILD_LOG\""
|
|
|
|
# manifest heredoc guard (source-level: dry-run emits no manifest; the live build's manifest is
|
|
# additionally verified in the ISO-build leg). Pointer present, plaintext variable absent.
|
|
# the heredoc text contains ${VAR} references — grep it outside check()'s eval, pass verdicts in
|
|
MANIFEST_SRC="$(awk '/^cat > "\$OUT_ISO.manifest.txt" <<EOF$/{f=1;next} f&&/^EOF$/{exit} f' "$BUILD")"
|
|
SRC_FOUND=no; [ -n "$MANIFEST_SRC" ] && SRC_FOUND=yes
|
|
HAS_POINTER=no; grep -q 'rootpw.txt' <<< "$MANIFEST_SRC" && HAS_POINTER=yes
|
|
LEAKS_PLAIN=no; grep -q 'ROOT_PLAIN' <<< "$MANIFEST_SRC" && LEAKS_PLAIN=yes
|
|
check "manifest heredoc found in build script" "[ \"$SRC_FOUND\" = yes ]"
|
|
check "manifest carries the rootpw.txt pointer" "[ \"$HAS_POINTER\" = yes ]"
|
|
check "manifest never references ROOT_PLAIN" "[ \"$LEAKS_PLAIN\" = no ]"
|
|
|
|
echo "=================================================="
|
|
if [ $fail -eq 0 ]; then echo "ALL ROOTPW-EMISSION TESTS PASSED"; else echo "SOME TESTS FAILED"; fi
|
|
exit $fail
|