Add safe upstream sync for Strata

2026-09-03 14:03:25 -04:00
1 parent dcb8211050
commit fc27de8a2e
@@ -1,4 +1,5 @@
 {
  "source": "local",
-  "release_ring": "fast"
+  "release_ring": "fast",
+  "min_release_age": "24h"
 }
@@ -0,0 +1,106 @@
+#!/bin/bash
+# Strata publishes annotated tags and GitHub source archives, but no checksum
+# manifest. Download the small archive only when a newer stable release exists,
+# then verify that its embedded commit matches the release tag before hashing it.
+set -euo pipefail
+
+REPO='lgse/strata'
+API_URL="https://api.github.com/repos/$REPO"
+
+current=$(awk -F= '/^pkgver=/ { print $2; exit }' PKGBUILD)
+releases=$(curl -fsSL "$API_URL/releases?per_page=100")
+now=$(date +%s)
+min_age=${MIN_RELEASE_AGE_SECONDS:-0}
+
+candidates=0
+best_version=''
+best_tag=''
+best_published_at=''
+
+while IFS=$'\t' read -r tag published_at; do
+  if [[ ! $tag =~ ^v([0-9]+\.[0-9]+\.[0-9]+)$ ]]; then
+    printf '%s has an unusable stable release tag: %s\n' "$REPO" "${tag:-<empty>}" >&2
+    exit 1
+  fi
+  version=${BASH_REMATCH[1]}
+
+  if [[ -z $published_at ]] || ! published_epoch=$(date --date="$published_at" +%s 2>/dev/null); then
+    printf '%s release %s has an invalid publication time\n' "$REPO" "$tag" >&2
+    exit 1
+  fi
+  candidates=$((candidates + 1))
+
+  if ((now - published_epoch < min_age)) && [[ ${BYPASS_MIN_RELEASE_AGE:-} != 1 ]]; then
+    continue
+  fi
+
+  if [[ -z $best_version ]] || (( $(vercmp "$version" "$best_version") > 0 )); then
+    best_version=$version
+    best_tag=$tag
+    best_published_at=$published_at
+  fi
+done < <(jq -r '.[] | select((.draft or .prerelease) | not) | [.tag_name // "", .published_at // ""] | @tsv' <<<"$releases")
+
+if ((candidates == 0)); then
+  printf 'No stable releases found for %s\n' "$REPO" >&2
+  exit 1
+fi
+
+if [[ -z $best_version ]] || (( $(vercmp "$best_version" "$current") <= 0 )); then
+  echo '{}'
+  exit 0
+fi
+
+tag_ref=$(curl -fsSL "$API_URL/git/ref/tags/$best_tag")
+tag_type=$(jq -r '.object.type // empty' <<<"$tag_ref")
+tag_object=$(jq -r '.object.sha // empty' <<<"$tag_ref")
+if [[ ! $tag_object =~ ^[0-9a-f]{40}$ ]]; then
+  printf 'Release %s has an invalid tag object\n' "$best_tag" >&2
+  exit 1
+fi
+
+case "$tag_type" in
+  commit)
+    expected_commit=$tag_object
+    ;;
+  tag)
+    tag_data=$(curl -fsSL "$API_URL/git/tags/$tag_object")
+    if [[ $(jq -r '.object.type // empty' <<<"$tag_data") != commit ]]; then
+      printf 'Release %s does not resolve to a commit\n' "$best_tag" >&2
+      exit 1
+    fi
+    expected_commit=$(jq -r '.object.sha // empty' <<<"$tag_data")
+    ;;
+  *)
+    printf 'Release %s has unsupported tag object type %s\n' "$best_tag" "${tag_type:-<empty>}" >&2
+    exit 1
+    ;;
+esac
+
+if [[ ! $expected_commit =~ ^[0-9a-f]{40}$ ]]; then
+  printf 'Release %s resolves to an invalid commit\n' "$best_tag" >&2
+  exit 1
+fi
+
+tarball=$(mktemp)
+trap 'rm -f "$tarball"' EXIT
+curl -fsSL -o "$tarball" "https://github.com/$REPO/archive/refs/tags/$best_tag.tar.gz"
+
+expected_root="strata-$best_version"
+served_roots=$(tar -tzf "$tarball" | cut -d/ -f1 | sort -u)
+if [[ $served_roots != "$expected_root" ]]; then
+  printf 'Release %s contains root %s, expected %s\n' "$best_tag" "$served_roots" "$expected_root" >&2
+  exit 1
+fi
+
+if ! archive_commit=$(git get-tar-commit-id < <(gzip -dc "$tarball")) ||
+  [[ $archive_commit != "$expected_commit" ]]; then
+  printf 'Release %s archive commit does not match its tag\n' "$best_tag" >&2
+  exit 1
+fi
+
+jq -n \
+  --arg pkgver "$best_version" \
+  --arg published_at "$best_published_at" \
+  --arg source "$(sha256sum "$tarball" | cut -d' ' -f1)" \
+  '{pkgver: $pkgver, published_at: $published_at, sha256sums: {any: [$source]}}'