From 17155d29c73470de4b66cd46da3e5ebe4e868a29 Mon Sep 17 00:00:00 2001 From: "David M. Klein" <4+leander19961@noreply.localhost> Date: Wed, 26 Aug 2026 10:04:58 +0200 Subject: [PATCH] docker/sync.sh aktualisiert --- docker/sync.sh | 614 ++++++++++++++++++++++++++++++++++++++++--------- 1 file changed, 503 insertions(+), 111 deletions(-) diff --git a/docker/sync.sh b/docker/sync.sh index e928e48..a5c9041 100644 --- a/docker/sync.sh +++ b/docker/sync.sh @@ -1,134 +1,526 @@ -#!/bin/bash -# Synct die Paket-Whitelist aus Git und lädt die selektierten Pakete -# (inkl. Abhängigkeiten) aus den jeweils angegebenen Fremd-Repos. +#!/usr/bin/env bash +# +# sync.sh - Mirror selected packages from third-party RPM repos into ONE +# combined local repo consumable by AlmaLinux clients (dnf / +# PackageKit / GNOME Software / Discover) - WITHOUT pulling in or +# exposing packages that AlmaLinux itself already ships +# (AppStream, BaseOS, Extras, CRB/"Extras for Enterprise"). +# +# ALL sources defined in the YAML end up in a SINGLE repo +# (REPO_BASE_DIR/pkgs/) with a SINGLE client-facing .repo file +# (CLIENT_REPO_DIR/mirror.repo) - clients only ever add one repo, no matter +# how many sources you configure. +# +# What it does, per entry in the YAML source list: +# 1. Registers the source repo temporarily and resolves the full +# dependency closure of the requested packages, using the source repo +# AND the local AlmaLinux repos (needed so resolution succeeds, e.g. +# glibc-style deps that only exist in AlmaLinux). +# 2. Throws away every RPM in that closure that AlmaLinux itself provides. +# Only RPMs that genuinely only exist in the third-party repo are kept. +# 3. Verifies each kept RPM against the source's own gpgkey (if given in +# the YAML), then STRIPS the original signature and RE-SIGNS it with +# the mirror's own GPG key. Clients therefore only ever need to trust +# one key (this mirror's), never the individual upstream repos' keys. +# 4. Moves the signed RPMs into the single shared repo directory +# (REPO_BASE_DIR/pkgs/). +# Once all sources have been processed, the script rebuilds repo metadata +# for that ONE directory with createrepo_c and generates AppStream "generic +# component" metadata for ONLY the packages explicitly listed under +# "packages:" across all sources (never for pulled-in dependencies), +# injecting it once into that same repo. Only those show up as installable +# items in GNOME Software/Discover. +# +# Set "metadata_only: true" on a source to skip steps 2-4 entirely for that +# source: no RPMs are downloaded/mirrored, only curated AppStream visibility +# is contributed to the combined repo. Use this when baseurl already points +# at a repo your clients have enabled directly (e.g. AlmaLinux's own +# AppStream repo, which on AlmaLinux 10 ships dotnet-* itself) - you just +# want to narrow down what shows up in Discover without duplicating RPM +# content clients can already get natively. +# +# NOTE ON NAME COLLISIONS: if two different sources define an RPM with the +# exact same NEVRA (name-version-release.arch), the later one silently wins +# in the shared directory (harmless - it's the same package). If two +# sources define the SAME PACKAGE NAME with genuinely different content, +# that's not supported here - keep package names distinct across sources. +# +# IMPORTANT LIMITATION: +# GNOME Software's curated "Explore" front page only lists packages that +# ship a real desktop-application AppStream component (icon, screenshots, +# .desktop file). A "generic" component (what this script generates for +# CLI tools/SDKs/runtimes) makes the package installable from Discover and +# shows up in search/details, but it will not appear on that curated front +# page. This is GNOME Software/appstreamcli behaviour and cannot be fixed +# by repo metadata alone. +# +# SECURITY NOTE ON RE-SIGNING: +# The mirror's private signing key is generated once (unattended, without +# a passphrase - standard practice for automated repo signing) and kept +# under GPG_HOME. Only the exported PUBLIC key ends up in REPO_BASE_DIR +# where clients can fetch it. GPG_HOME itself must never be exposed via +# nginx/the webserver and should live on storage only the sync process can +# read. Anyone who can read GPG_HOME can sign packages as your mirror - +# treat it like any other private key material. +# +# A revocation certificate is generated alongside the key on first run +# (GPG_HOME/revocation-cert.asc) - since the key never expires, this +# certificate is the ONLY way to invalidate it later if it's ever +# compromised. Copy it to secure, offline storage right after first +# startup; see the log output / README for the exact command. +# +# Requires: dnf, dnf-plugins-core (for "dnf download"), createrepo_c, +# modifyrepo_c, rpm-sign (rpmsign/rpmkeys), gnupg2, python3, +# python3-pyyaml, git (if fetching the source list from git), curl. +# +# Run as root (needs to write a temporary .repo file to /etc/yum.repos.d). + set -euo pipefail -CONFIG_DIR=/etc/mirror -CONFIG_REPO_URL="${CONFIG_REPO_URL:?CONFIG_REPO_URL ist nicht gesetzt}" -CONFIG_REPO_BRANCH="${CONFIG_REPO_BRANCH:-main}" -PACKAGES_FILE="$CONFIG_DIR/packages.yaml" -DEST=/data/repo/rpms -TMP_REPO_DIR=/etc/yum.repos.d -LOCKFILE=/tmp/sync.lock +# --------------------------------------------------------------------------- +# Configuration (override via environment, e.g. in the systemd unit/cron job) +# --------------------------------------------------------------------------- -exec 200>"$LOCKFILE" -if ! flock -n 200; then - echo "[sync] Ein anderer Sync-Lauf ist bereits aktiv, breche ab." - exit 0 -fi +# Where the YAML source list lives. Either point SOURCES_GIT_REPO at a git +# repo (SOURCES_YAML_FILE is the path *inside* that repo), or leave +# SOURCES_GIT_REPO empty and point SOURCES_YAML_FILE at a local file. +SOURCES_GIT_REPO="${SOURCES_GIT_REPO:-}" +SOURCES_GIT_BRANCH="${SOURCES_GIT_BRANCH:-main}" +SOURCES_YAML_FILE="${SOURCES_YAML_FILE:-sources.yaml}" -echo "[sync] $(date -Iseconds) Starte Sync-Lauf" +# Local working/output paths. +WORK_DIR="${WORK_DIR:-/var/cache/rpm-mirror-sync}" +REPO_BASE_DIR="${REPO_BASE_DIR:-/srv/repo}" +CLIENT_REPO_DIR="${CLIENT_REPO_DIR:-${REPO_BASE_DIR}/client-repos}" +# The ONE combined repo directory all sources' packages end up in. +PKG_DIR="${REPO_BASE_DIR}/pkgs" -# --- 1. Whitelist aus Git holen --------------------------------------- -mkdir -p "$CONFIG_DIR" +# Base URL under which REPO_BASE_DIR is actually served to clients (web +# server / reverse proxy in front of REPO_BASE_DIR). Used only to generate +# ready-to-use .repo files for clients. +CLIENT_BASE_URL="${CLIENT_BASE_URL:-http://mirror.example.local/repo}" -if [ -n "${GIT_SSH_KEY_PATH:-}" ] && [ -f "${GIT_SSH_KEY_PATH:-}" ]; then - export GIT_SSH_COMMAND="ssh -i ${GIT_SSH_KEY_PATH} -o StrictHostKeyChecking=accept-new" -fi +# repoids of AlmaLinux's own repos on THIS machine, as shown by +# `dnf repolist`. Adjust to match your system if they differ. +# ("Extras for Enterprise" is the "extras" repo in AlmaLinux 10 naming; crb +# is CodeReady Builder / "extras-common" on some setups - check your +# `dnf repolist` output and adjust below.) +ALMA_REPO_IDS="${ALMA_REPO_IDS:-baseos appstream extras crb}" -if [ -d "$CONFIG_DIR/.git" ]; then - git -C "$CONFIG_DIR" fetch --depth=1 origin "$CONFIG_REPO_BRANCH" - git -C "$CONFIG_DIR" reset --hard "origin/$CONFIG_REPO_BRANCH" -else - git clone --depth=1 --branch "$CONFIG_REPO_BRANCH" "$CONFIG_REPO_URL" "$CONFIG_DIR" -fi +# The mirror's own signing identity. A key is generated once (on first run) +# under GPG_HOME and reused on every subsequent run - make sure GPG_HOME +# points at persistent storage (a volume), or you'll get a new key (and +# therefore a trust-breaking change for clients) on every restart. +GPG_HOME="${GPG_HOME:-${WORK_DIR}/gnupg}" +GPG_KEY_NAME="${GPG_KEY_NAME:-RPM Mirror}" +GPG_KEY_EMAIL="${GPG_KEY_EMAIL:-rpm-mirror@example.local}" +MIRROR_GPG_KEY_FILE="${REPO_BASE_DIR}/RPM-GPG-KEY-mirror" -if [ ! -f "$PACKAGES_FILE" ]; then - echo "[sync] FEHLER: $PACKAGES_FILE nicht gefunden." - exit 1 -fi +LOG_TAG="rpm-mirror-sync" -mkdir -p "$DEST" +# --------------------------------------------------------------------------- +# Helpers +# --------------------------------------------------------------------------- -# --- 2. Pro Quelle: temporäres Repo aktivieren, Pakete gezielt ziehen -- -source_count=$(yq -o=json '.sources | length' "$PACKAGES_FILE") +log() { echo "[$(date '+%Y-%m-%d %H:%M:%S')] $*" | tee -a "${WORK_DIR}/sync.log" >&2; } +die() { log "ERROR: $*"; exit 1; } -for i in $(seq 0 $((source_count - 1))); do - src=$(yq -o=json ".sources[$i]" "$PACKAGES_FILE") - name=$(echo "$src" | jq -r '.name') - baseurl=$(echo "$src" | jq -r '.baseurl') - gpgkey=$(echo "$src" | jq -r '.gpgkey // empty') - mapfile -t packages < <(echo "$src" | jq -r '.packages[]') +require_cmd() { + command -v "$1" >/dev/null 2>&1 || die "required command '$1' not found (install it first)" +} - if [ "${#packages[@]}" -eq 0 ]; then - echo "[sync] Quelle '$name': keine Pakete gelistet, überspringe." - continue - fi - - echo "[sync] Quelle '$name': ${#packages[@]} Paket(e) -> $baseurl" - - repofile="$TMP_REPO_DIR/tmp-${name}.repo" - { - echo "[tmp-${name}]" - echo "name=${name}" - echo "baseurl=${baseurl}" - echo "enabled=1" - if [ -n "$gpgkey" ]; then - echo "gpgcheck=1" - echo "gpgkey=${gpgkey}" - else - echo "gpgcheck=0" +cleanup() { + # Remove any temp source .repo files we created, even on failure. + if [[ -n "${TEMP_REPO_FILES:-}" ]]; then + for f in "${TEMP_REPO_FILES[@]}"; do + rm -f "$f" + done fi - } > "$repofile" +} +trap cleanup EXIT - # Bei Fehlschlag (z.B. Paket nicht gefunden) diese Quelle nicht den - # gesamten Lauf abbrechen lassen, aber laut melden. - if ! dnf download \ - --disablerepo='*' --enablerepo="tmp-${name}" \ - --destdir="$DEST" "${packages[@]}"; then - echo "[sync] WARNUNG: Download für Quelle '$name' teilweise fehlgeschlagen." - fi +SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)" +HELPER="${SCRIPT_DIR}/sync_helpers.py" - rm -f "$repofile" +# --------------------------------------------------------------------------- +# Preconditions +# --------------------------------------------------------------------------- + +[[ $EUID -eq 0 ]] || die "must run as root (writes to /etc/yum.repos.d and ${REPO_BASE_DIR})" + +for c in dnf createrepo_c modifyrepo_c rpm rpmsign rpmkeys gpg python3 curl gzip; do + require_cmd "$c" +done +[[ -f "$HELPER" ]] || die "sync_helpers.py not found next to sync.sh (expected: $HELPER)" +python3 -c "import yaml" 2>/dev/null || die "python3-pyyaml not installed (dnf install -y python3-pyyaml)" + +mkdir -p "$WORK_DIR" "$REPO_BASE_DIR" "$CLIENT_REPO_DIR" "$PKG_DIR" + +# --------------------------------------------------------------------------- +# Mirror signing key: generate once, reuse forever, export the public part +# --------------------------------------------------------------------------- + +MIRROR_GPG_KEY_ID="" +REVOCATION_CERT_FILE="${GPG_HOME}/revocation-cert.asc" + +init_mirror_gpg_key() { + mkdir -p "$GPG_HOME" + chmod 700 "$GPG_HOME" + + if [[ -z "$(gpg --homedir "$GPG_HOME" --list-secret-keys --with-colons 2>/dev/null)" ]]; then + log "No mirror signing key found under ${GPG_HOME} - generating one (one-time)..." + gpg --homedir "$GPG_HOME" --batch --pinentry-mode loopback --passphrase '' \ + --quick-generate-key "${GPG_KEY_NAME} <${GPG_KEY_EMAIL}>" rsa4096 sign never \ + || die "failed to generate mirror GPG signing key" + + # GnuPG >= 2.1 automatically writes a revocation certificate under + # openpgp-revocs.d/.rev as part of key generation itself + # (visible in the gpg output above: "revocation certificate stored + # as ..."). We just need to copy it to a known, stable path - no + # need to (fragile-ly) drive gpg's interactive --gen-revoke menu + # ourselves, which behaves differently across gpg versions. + local auto_revoc + auto_revoc="$(find "${GPG_HOME}/openpgp-revocs.d" -maxdepth 1 -name '*.rev' 2>/dev/null | head -n1)" + [[ -n "$auto_revoc" && -s "$auto_revoc" ]] \ + || die "expected GnuPG to auto-generate a revocation certificate under ${GPG_HOME}/openpgp-revocs.d/ but none was found" + + cp "$auto_revoc" "$REVOCATION_CERT_FILE" + chmod 600 "$REVOCATION_CERT_FILE" + + log "!!! Revocation certificate written to: ${REVOCATION_CERT_FILE}" + log "!!! Copy it to secure, OFFLINE storage now, e.g.:" + log "!!! docker compose cp syncer:${REVOCATION_CERT_FILE} ./mirror-key-revocation-cert.asc" + log "!!! It is the only way to invalidate this key if it is ever compromised -" + log "!!! it never expires, so it needs the same protection as the private key." + fi + + MIRROR_GPG_KEY_ID="$(gpg --homedir "$GPG_HOME" --list-secret-keys --with-colons \ + | awk -F: '/^sec:/ {print $5; exit}')" + [[ -n "$MIRROR_GPG_KEY_ID" ]] || die "could not determine mirror GPG key id" + + # rpmsign/rpm --addsign etc. read the signing identity from macros. + cat > "${HOME:-/root}/.rpmmacros" < "$MIRROR_GPG_KEY_FILE" + + log "Mirror signing key ready: ${MIRROR_GPG_KEY_ID} (public key: ${MIRROR_GPG_KEY_FILE})" +} + +init_mirror_gpg_key + + + +# --------------------------------------------------------------------------- +# Fetch the YAML source list +# --------------------------------------------------------------------------- + +resolve_yaml_path() { + if [[ -n "$SOURCES_GIT_REPO" ]]; then + if [[ "$SOURCES_YAML_FILE" == /* ]]; then + die "SOURCES_GIT_REPO is set, but SOURCES_YAML_FILE ('${SOURCES_YAML_FILE}') looks like an absolute path. When pulling the source list from git, SOURCES_YAML_FILE must be a path RELATIVE to that repo's root (e.g. 'sources.yaml' or 'config/sources.yaml') - not the '/config/...' path used for the local bind-mount option. Fix SOURCES_YAML_FILE in .env." + fi + local clone_dir="${WORK_DIR}/sources-repo" + if [[ -d "${clone_dir}/.git" ]]; then + log "Updating source list git repo..." + # >&2 is critical here: resolve_yaml_path's stdout is captured + # by the caller via $(...) to get the final path. "git reset + # --hard" prints "HEAD is now at " to STDOUT by + # default - without this redirect that text gets appended to + # YAML_PATH, producing a garbage multi-line "path" that then + # fails the next -f check with a confusing error. + git -C "$clone_dir" fetch --depth 1 origin "$SOURCES_GIT_BRANCH" >&2 + git -C "$clone_dir" reset --hard "origin/${SOURCES_GIT_BRANCH}" >&2 + else + log "Cloning source list git repo..." + rm -rf "$clone_dir" + git clone --depth 1 --branch "$SOURCES_GIT_BRANCH" "$SOURCES_GIT_REPO" "$clone_dir" >&2 + fi + echo "${clone_dir}/${SOURCES_YAML_FILE}" + else + echo "$SOURCES_YAML_FILE" + fi +} + +YAML_PATH="$(resolve_yaml_path)" +[[ -f "$YAML_PATH" ]] || die "source YAML not found: $YAML_PATH" + +SOURCES_JSON="$(python3 "$HELPER" parse-yaml "$YAML_PATH")" || die "failed to parse $YAML_PATH" +SOURCE_COUNT="$(python3 -c 'import json,sys; print(len(json.load(sys.stdin)))' <<<"$SOURCES_JSON")" +log "Loaded $SOURCE_COUNT source(s) from $YAML_PATH" + +# --------------------------------------------------------------------------- +# Per-source sync +# --------------------------------------------------------------------------- + +declare -a TEMP_REPO_FILES=() + +# Build --enablerepo flags for the AlmaLinux repos as a bash array once. +declare -a ALMA_ENABLE_FLAGS=() +for r in $ALMA_REPO_IDS; do + ALMA_ENABLE_FLAGS+=( "--enablerepo=${r}" ) done -# --- 3. Alte Paketversionen aufräumen ----------------------------------- -echo "[sync] Räume veraltete Paketversionen auf" -dnf repomanage --old "$DEST" 2>/dev/null | xargs -r rm -f +sync_one_source() { + local name="$1" baseurl="$2" gpgkey="$3" packages_json="$4" metadata_only="${5:-false}" -# --- 4. Pakete mit dem Firmen-Key umsignieren --------------------------- -if [ -n "${GPG_KEY_ID:-}" ]; then - echo "[sync] Signiere Pakete mit Firmen-Key ${GPG_KEY_ID}" - find "$DEST" -name '*.rpm' -print0 \ - | xargs -0 -r rpmsign --key-id="$GPG_KEY_ID" --resign -else - echo "[sync] WARNUNG: GPG_KEY_ID nicht gesetzt, Pakete bleiben unsigniert." -fi + local repoid="mirror-src-${name}" + local repo_file="/etc/yum.repos.d/${repoid}.repo" + local tmp_dir="${WORK_DIR}/${name}/download" + local list_dir="${WORK_DIR}/${name}" + # This source's contribution to the combined AppStream metadata: one + # "namesummary" line per explicitly requested package. Collected + # here, merged across all sources, and turned into ONE appstream.xml + # after the whole source loop finishes. + local entries_tsv="${list_dir}/appstream-entries.tsv" -# --- 5. Repo-Metadaten neu erzeugen ------------------------------------- -echo "[sync] Aktualisiere Repo-Metadaten" -createrepo_c --update "$DEST" + log "=== Syncing source '${name}' (metadata_only=${metadata_only}) ===" + mkdir -p "$tmp_dir" "$list_dir" + : > "$entries_tsv" -# --- 6. AppStream-Metadaten erzeugen, damit Discover/GNOME Software -# die Pakete als Apps mit Icon/Beschreibung anzeigt ------------- -echo "[sync] Erzeuge AppStream-Metadaten" -ASB_TMP=$(mktemp -d) -appstream-builder \ - --origin=firma-mirror \ - --basename=appstream \ - --cache-dir="$ASB_TMP/cache" \ - --enable-hidpi \ - --max-threads=2 \ - --min-icon-size=32 \ - --output-dir="$ASB_TMP/out" \ - --packages-dir="$DEST" \ - --temp-dir="$ASB_TMP/tmp" \ - --nonet + # readarray of requested top-level package names for this source. + mapfile -t packages < <(python3 -c ' +import json,sys +for p in json.load(sys.stdin): + print(p) +' <<<"$packages_json") + [[ ${#packages[@]} -gt 0 ]] || die "source '${name}' has no packages" -if [ -f "$ASB_TMP/out/appstream.xml.gz" ]; then - modifyrepo_c --no-compress "$ASB_TMP/out/appstream.xml.gz" "$DEST/repodata/" -fi -if [ -f "$ASB_TMP/out/appstream-icons.tar.gz" ]; then - modifyrepo_c --no-compress "$ASB_TMP/out/appstream-icons.tar.gz" "$DEST/repodata/" -fi -rm -rf "$ASB_TMP" + # --- 1. Register the source repo temporarily ------------------------- + { + echo "[${repoid}]" + echo "name=Mirror source: ${name}" + echo "baseurl=${baseurl}" + echo "enabled=1" + if [[ -n "$gpgkey" ]]; then + echo "gpgcheck=1" + echo "gpgkey=${gpgkey}" + else + echo "gpgcheck=0" + fi + } > "$repo_file" + TEMP_REPO_FILES+=( "$repo_file" ) + dnf clean expire-cache --disablerepo='*' --enablerepo="$repoid" >/dev/null 2>&1 || true -# Optional: Repo-Metadaten (repomd.xml) selbst signieren, für zusätzliche -# Integritätsprüfung mit repo_gpgcheck=1 auf Client-Seite -if [ -n "${GPG_KEY_ID:-}" ]; then - gpg --batch --yes --detach-sign --armor \ - -u "$GPG_KEY_ID" -o "$DEST/repodata/repomd.xml.asc" \ - "$DEST/repodata/repomd.xml" -fi + # --- metadata_only sources: curate Discover/GNOME Software visibility + # WITHOUT mirroring any RPM content. Use this when baseurl already + # points at a repo your clients have enabled directly (e.g. AlmaLinux's + # own AppStream repo, which ships dotnet-* itself on AlmaLinux 10) - the + # actual package install is then resolved by dnf from that repo as + # normal; this source only contributes AppStream "generic component" + # data for the packages listed to the combined repo built after the + # source loop, so ONLY those show up as installable in Discover instead + # of AlmaLinux's entire (huge) AppStream catalog. + # PRECONDITION: clients must have the repo(s) that actually provide + # these packages enabled already (true for any stock AlmaLinux install - + # baseos/appstream/extras/crb are on by default). + if [[ "$metadata_only" == "true" ]]; then + for pkg in "${packages[@]}"; do + local summary + summary="$(dnf repoquery -y --disablerepo='*' --enablerepo="$repoid" \ + --qf '%{summary}' "$pkg" 2>/dev/null | head -n1)" + printf '%s\t%s\n' "$pkg" "$summary" >> "$entries_tsv" + done -echo "[sync] $(date -Iseconds) Sync-Lauf abgeschlossen" \ No newline at end of file + log "Source '${name}': metadata_only - queued AppStream visibility for ${#packages[@]} package(s), no RPMs mirrored" + + rm -f "$repo_file" + TEMP_REPO_FILES=( "${TEMP_REPO_FILES[@]/$repo_file}" ) + return + fi + + # --- 2. List everything the source repo itself provides -------------- + # (used later to decide "does this RPM genuinely come from the source, + # or did AlmaLinux already have it".) + local source_nevra_list="${list_dir}/source-nevra.txt" + dnf repoquery -y --disablerepo='*' --enablerepo="$repoid" \ + --qf '%{name}-%{version}-%{release}.%{arch}' -a \ + > "$source_nevra_list" \ + || die "failed to query source repo '${name}' (check baseurl/gpgkey)" + [[ -s "$source_nevra_list" ]] || die "source repo '${name}' returned no packages - check baseurl" + + # --- 3. Resolve full dependency closure for the requested packages --- + # Enable the source repo AND the local AlmaLinux repos so dependency + # resolution succeeds even for deps AlmaLinux normally provides - + # we filter those back out in step 4. + rm -rf "$tmp_dir"; mkdir -p "$tmp_dir" + log "Resolving + downloading dependency closure for: ${packages[*]}" + dnf download -y --resolve --alldeps \ + --destdir="$tmp_dir" \ + --disablerepo='*' \ + --enablerepo="$repoid" \ + "${ALMA_ENABLE_FLAGS[@]}" \ + "${packages[@]}" \ + || die "dnf download failed for source '${name}'" + + # --- 4. Drop everything AlmaLinux already provides, verify + re-sign -- + # the rest with the mirror's own key ----------------------------------- + local verify_dbpath="${list_dir}/verify-rpmdb" + if [[ -n "$gpgkey" ]]; then + local source_gpgkey_file="${list_dir}/source-gpgkey.asc" + curl -fsSL "$gpgkey" -o "$source_gpgkey_file" \ + || die "could not fetch gpgkey for source '${name}' from ${gpgkey}" + rm -rf "$verify_dbpath"; mkdir -p "$verify_dbpath" + rpm --dbpath "$verify_dbpath" --initdb + rpm --dbpath "$verify_dbpath" --import "$source_gpgkey_file" \ + || die "could not import gpgkey for source '${name}'" + else + log " WARNING: source '${name}' has no gpgkey configured - skipping upstream signature verification" + fi + + local kept=0 dropped=0 kept_requested=0 kept_dependency=0 + for f in "$tmp_dir"/*.rpm; do + [[ -e "$f" ]] || continue + local base; base="$(basename "$f" .rpm)" + + if ! grep -qxF "$base" "$source_nevra_list"; then + log " dropping (provided by AlmaLinux): $base" + rm -f "$f" + dropped=$((dropped + 1)) + continue + fi + + if [[ -n "$gpgkey" ]]; then + rpmkeys --dbpath "$verify_dbpath" --checksig "$f" >/dev/null 2>&1 \ + || die "signature verification FAILED for '${base}' from source '${name}' - refusing to mirror it (tampered download or wrong gpgkey configured)" + fi + + # Strip the upstream signature and sign with the mirror's own key, + # so clients only ever need to trust MIRROR_GPG_KEY_FILE. + rpmsign --resign "$f" >/dev/null \ + || die "failed to re-sign '${base}' with the mirror key" + + # Label each kept package as explicitly "requested" (listed under + # packages: in the YAML) or a pulled-in "dependency" - packages the + # requested ones need but AlmaLinux doesn't provide, so they have to + # be mirrored too or `dnf install ` breaks on clients. + # This is purely informational (log output); both kinds are kept. + local pkg_name tag + pkg_name="$(rpm -qp --qf '%{NAME}' "$f" 2>/dev/null)" + tag="dependency" + for req in "${packages[@]}"; do + if [[ "$pkg_name" == "$req" ]]; then + tag="requested" + break + fi + done + if [[ "$tag" == "requested" ]]; then + kept_requested=$((kept_requested + 1)) + local summary + summary="$(rpm -qp --qf '%{SUMMARY}' "$f" 2>/dev/null)" + printf '%s\t%s\n' "$pkg_name" "$summary" >> "$entries_tsv" + else + kept_dependency=$((kept_dependency + 1)) + fi + log " keeping (${tag}): $base" + + mv "$f" "${PKG_DIR}/" + kept=$((kept + 1)) + done + log "Source '${name}': kept ${kept} package(s) - ${kept_requested} explicitly requested + ${kept_dependency} pulled-in third-party dependencies (re-signed with mirror key), dropped ${dropped} AlmaLinux-provided package(s)" + [[ $kept -gt 0 ]] || die "nothing kept for source '${name}' - check baseurl/package names" + + # --- cleanup temp repo file for this source --------------------------- + rm -f "$repo_file" + TEMP_REPO_FILES=( "${TEMP_REPO_FILES[@]/$repo_file}" ) +} + +# Iterate over sources (JSON array -> one JSON object per line via jq-less python) +while IFS= read -r src_json; do + name="$(python3 -c 'import json,sys;print(json.loads(sys.argv[1])["name"])' "$src_json")" + baseurl="$(python3 -c 'import json,sys;print(json.loads(sys.argv[1])["baseurl"])' "$src_json")" + gpgkey="$(python3 -c 'import json,sys;print(json.loads(sys.argv[1]).get("gpgkey",""))' "$src_json")" + pkgs_json="$(python3 -c 'import json,sys;print(json.dumps(json.loads(sys.argv[1])["packages"]))' "$src_json")" + metadata_only="$(python3 -c 'import json,sys;print(str(bool(json.loads(sys.argv[1]).get("metadata_only", False))).lower())' "$src_json")" + sync_one_source "$name" "$baseurl" "$gpgkey" "$pkgs_json" "$metadata_only" +done < <(python3 -c ' +import json,sys +for s in json.load(sys.stdin): + print(json.dumps(s)) +' <<<"$SOURCES_JSON") + +# --------------------------------------------------------------------------- +# Build the ONE combined repo from everything all sources contributed +# --------------------------------------------------------------------------- + +createrepo_c --update "$PKG_DIR" >/dev/null + +# Merge every source's appstream-entries.tsv (written during its own +# processing above) into one de-duplicated list, then build ONE AppStream +# metadata blob for the single shared repo. Positional arg (not stdin) for +# the same reason noted elsewhere in this script: "python3 -" already +# consumes stdin to read the script itself. +COMBINED_ENTRIES_JSON="$(python3 - "$WORK_DIR" <<'PYEOF' +import glob, json, os, sys + +work_dir = sys.argv[1] +seen = {} +for f in sorted(glob.glob(os.path.join(work_dir, "*", "appstream-entries.tsv"))): + try: + with open(f, encoding="utf-8") as fh: + for line in fh: + line = line.rstrip("\n") + if not line: + continue + parts = line.split("\t", 1) + name = parts[0] + summary = parts[1] if len(parts) > 1 else "" + if not name: + continue + entry = {"name": name, "summary": summary} + if name not in seen: + seen[name] = entry + elif seen[name] != entry: + print( + f"WARNING: package '{name}' listed by multiple sources " + "with differing AppStream data - keeping the first one seen", + file=sys.stderr, + ) + except OSError: + continue +print(json.dumps(list(seen.values()))) +PYEOF +)" +[[ -n "$COMBINED_ENTRIES_JSON" ]] || die "failed to compute combined AppStream entries" + +APPSTREAM_XML="${WORK_DIR}/appstream.xml" +python3 "$HELPER" gen-appstream "rpm-mirror" "$COMBINED_ENTRIES_JSON" > "$APPSTREAM_XML" +gzip -fk "$APPSTREAM_XML" +modifyrepo_c --mdtype=appstream "${APPSTREAM_XML}.gz" "${PKG_DIR}/repodata" >/dev/null + +# Detached-sign repomd.xml itself with the mirror key, so clients can verify +# the METADATA (which packages/versions exist, their checksums) hasn't been +# tampered with - not just each individual RPM. Must happen last, after +# createrepo_c/modifyrepo_c are done touching repomd.xml (they update its +# checksums), otherwise the signature would be over stale content. +gpg --homedir "$GPG_HOME" --batch --pinentry-mode loopback --passphrase '' \ + --detach-sign --armor \ + --output "${PKG_DIR}/repodata/repomd.xml.asc" \ + "${PKG_DIR}/repodata/repomd.xml" \ + || die "failed to sign repomd.xml with the mirror key" + +# --- The ONE client-facing .repo file - this is all clients ever need ----- +cat > "${CLIENT_REPO_DIR}/mirror.repo" <