Files
felhom.eu/scripts/iso/test/rootpw-emission.sh
T
admin 2866f6a318
gates / gates (push) Successful in 27s
immich's first start: cause measured, fixed in the catalog (R-732 closed); ISO clean-tree gate (R-730 closed)
- R-732: the first-start geodata import runs up to 9 concurrent 5000-row INSERTs; the database needs
  ~400 MB anon + ~170 MB touched shared_buffers (the image's FIXED 512MB, not host-RAM sizing). 512M fits
  only with swap (bench swap 0: 61-104 kills; 9202 swap 512 MiB: survived by swapping). Controls: swap
  alone, limit alone flip it; shared_buffers 128MB alone does not. Catalog 56c4888: v3.2.4 + 768M,
  proven with swap off on both venues. audits/immich-first-start-2026-09-30/A-cause.md.
- R-730: scripts/iso/build-felhom-iso.sh refuses an uncommitted/untracked/unpushed tree (no bypass),
  records repo-commit from the gate and iso-v<version>; test iso/test/clean-tree.sh, red-proof run
  (status check removed -> 2 of 4 cases fail -> restored).
- R-731 narrowed (gitea 28.0.0 GA; mariadb 13.0 a short-term Rolling line). R-676 note.
- New rows R-733 (bench has no swap, boxes 512 MiB), R-734 (immich .immich markers -> files_may_change).
- STATUS: the golden line corrected (no bake is due; 0.283.1 is the newest release). Register 364 -> 366.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS
2026-09-30 16:18:17 +02:00

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#!/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"
# R-730: the build refuses a dirty/unpushed tree; this test is about the root password, so it builds from a
# throwaway clean repo (the gate's own test seam) and stays runnable while the real tree has work in progress.
git init -q --bare "$SCRATCH/origin.git"; git init -q -b main "$SCRATCH/repo"
git -C "$SCRATCH/repo" -c user.email=t@t -c user.name=t commit -q --allow-empty -m first
git -C "$SCRATCH/repo" remote add origin "$SCRATCH/origin.git"; git -C "$SCRATCH/repo" push -q origin main
FELHOM_ISO_REPO="$SCRATCH/repo" FELHOM_ISO_KEEP_WORK=1 TMPDIR="$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