docker/sync.sh aktualisiert

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2026-08-26 11:30:51 +02:00
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@@ -1,526 +1,133 @@
#!/usr/bin/env bash #!/bin/bash
# # Synct die Paket-Whitelist aus Git und laedt die selektierten Pakete
# sync.sh - Mirror selected packages from third-party RPM repos into ONE # (inkl. Abhaengigkeiten) aus den jeweils angegebenen Fremd-Repos.
# combined local repo consumable by AlmaLinux clients (dnf / # Erzeugt anschliessend RPM- und AppStream-Metadaten.
# 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 set -euo pipefail
# --------------------------------------------------------------------------- CONFIG_DIR=/etc/mirror
# Configuration (override via environment, e.g. in the systemd unit/cron job) CONFIG_REPO_URL="${CONFIG_REPO_URL:?CONFIG_REPO_URL ist nicht gesetzt}"
# --------------------------------------------------------------------------- CONFIG_REPO_BRANCH="${CONFIG_REPO_BRANCH:-main}"
PACKAGES_FILE="$CONFIG_DIR/packages.yaml"
DEST=/data/repo/rpms
TMP_REPO_DIR=/etc/yum.repos.d
LOCKFILE=/tmp/sync.lock
APPSTREAM_GEN=/usr/local/bin/appstream-gen.py
# Where the YAML source list lives. Either point SOURCES_GIT_REPO at a git exec 200>"$LOCKFILE"
# repo (SOURCES_YAML_FILE is the path *inside* that repo), or leave if ! flock -n 200; then
# SOURCES_GIT_REPO empty and point SOURCES_YAML_FILE at a local file. echo "[sync] Ein anderer Sync-Lauf ist bereits aktiv, breche ab."
SOURCES_GIT_REPO="${SOURCES_GIT_REPO:-}" exit 0
SOURCES_GIT_BRANCH="${SOURCES_GIT_BRANCH:-main}" fi
SOURCES_YAML_FILE="${SOURCES_YAML_FILE:-sources.yaml}"
# Local working/output paths. echo "[sync] $(date -Iseconds) Starte Sync-Lauf"
WORK_DIR="${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"
# Base URL under which REPO_BASE_DIR is actually served to clients (web # --- 1. Whitelist aus Git holen ---------------------------------------
# server / reverse proxy in front of REPO_BASE_DIR). Used only to generate mkdir -p "$CONFIG_DIR"
# ready-to-use .repo files for clients.
CLIENT_BASE_URL="${CLIENT_BASE_URL:-http://mirror.example.local/repo}"
# repoids of AlmaLinux's own repos on THIS machine, as shown by if [ -n "${GIT_SSH_KEY_PATH:-}" ] && [ -f "${GIT_SSH_KEY_PATH:-}" ]; then
# `dnf repolist`. Adjust to match your system if they differ. export GIT_SSH_COMMAND="ssh -i ${GIT_SSH_KEY_PATH} -o StrictHostKeyChecking=accept-new"
# ("Extras for Enterprise" is the "extras" repo in AlmaLinux 10 naming; crb fi
# is CodeReady Builder / "extras-common" on some setups - check your
# `dnf repolist` output and adjust below.)
ALMA_REPO_IDS="${ALMA_REPO_IDS:-baseos appstream extras crb}"
# The mirror's own signing identity. A key is generated once (on first run) if [ -d "$CONFIG_DIR/.git" ]; then
# under GPG_HOME and reused on every subsequent run - make sure GPG_HOME git -C "$CONFIG_DIR" fetch --depth=1 origin "$CONFIG_REPO_BRANCH"
# points at persistent storage (a volume), or you'll get a new key (and git -C "$CONFIG_DIR" reset --hard "origin/$CONFIG_REPO_BRANCH"
# therefore a trust-breaking change for clients) on every restart. else
GPG_HOME="${GPG_HOME:-${WORK_DIR}/gnupg}" git clone --depth=1 --branch "$CONFIG_REPO_BRANCH" "$CONFIG_REPO_URL" "$CONFIG_DIR"
GPG_KEY_NAME="${GPG_KEY_NAME:-RPM Mirror}" fi
GPG_KEY_EMAIL="${GPG_KEY_EMAIL:-rpm-mirror@example.local}"
MIRROR_GPG_KEY_FILE="${REPO_BASE_DIR}/RPM-GPG-KEY-mirror"
LOG_TAG="rpm-mirror-sync" if [ ! -f "$PACKAGES_FILE" ]; then
echo "[sync] FEHLER: $PACKAGES_FILE nicht gefunden."
exit 1
fi
# --------------------------------------------------------------------------- mkdir -p "$DEST"
# Helpers
# ---------------------------------------------------------------------------
log() { echo "[$(date '+%Y-%m-%d %H:%M:%S')] $*" | tee -a "${WORK_DIR}/sync.log" >&2; } # --- 2. Pro Quelle: temporaeres Repo aktivieren, Pakete gezielt ziehen --
die() { log "ERROR: $*"; exit 1; } source_count=$(yq -o=json '.sources | length' "$PACKAGES_FILE")
require_cmd() { for i in $(seq 0 $((source_count - 1))); do
command -v "$1" >/dev/null 2>&1 || die "required command '$1' not found (install it first)" src=$(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')
cleanup() { # Paketeintraege koennen Strings ODER Mappings mit Metadaten sein.
# Remove any temp source .repo files we created, even on failure. mapfile -t packages < <(
if [[ -n "${TEMP_REPO_FILES:-}" ]]; then echo "$src" | jq -r '.packages[] | if type == "string" then . else .name end'
for f in "${TEMP_REPO_FILES[@]}"; do )
rm -f "$f"
done
fi
}
trap cleanup EXIT
SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)" if [ "${#packages[@]}" -eq 0 ]; then
HELPER="${SCRIPT_DIR}/sync_helpers.py" echo "[sync] Quelle '$name': keine Pakete gelistet, ueberspringe."
continue
# ---------------------------------------------------------------------------
# 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/<fingerprint>.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 fi
MIRROR_GPG_KEY_ID="$(gpg --homedir "$GPG_HOME" --list-secret-keys --with-colons \ echo "[sync] Quelle '$name': ${#packages[@]} Paket(e) -> $baseurl"
| 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. repofile="$TMP_REPO_DIR/tmp-${name}.repo"
cat > "${HOME:-/root}/.rpmmacros" <<EOF
%_gpg_name ${MIRROR_GPG_KEY_ID}
%_gpg_path ${GPG_HOME}
%_signature gpg
EOF
# Publish the PUBLIC key once at the repo root. This is the only key
# clients will ever need, no matter how many upstream sources exist.
gpg --homedir "$GPG_HOME" --armor --export "$MIRROR_GPG_KEY_ID" > "$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 $(...) to get the final path. "git reset
# --hard" prints "HEAD is now at <hash> <message>" to STDOUT by
# default - without this redirect that text gets appended to
# YAML_PATH, producing a garbage multi-line "path" that then
# fails the next -f check with a confusing error.
git -C "$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
sync_one_source() {
local name="$1" baseurl="$2" gpgkey="$3" packages_json="$4" metadata_only="${5:-false}"
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
# "name<TAB>summary" 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="${list_dir}/appstream-entries.tsv"
log "=== Syncing source '${name}' (metadata_only=${metadata_only}) ==="
mkdir -p "$tmp_dir" "$list_dir"
: > "$entries_tsv"
# 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"
# --- 1. Register the source repo temporarily -------------------------
{ {
echo "[${repoid}]" echo "[tmp-${name}]"
echo "name=Mirror source: ${name}" echo "name=${name}"
echo "baseurl=${baseurl}" echo "baseurl=${baseurl}"
echo "enabled=1" echo "enabled=1"
if [[ -n "$gpgkey" ]]; then if [ -n "$gpgkey" ]; then
echo "gpgcheck=1" echo "gpgcheck=1"
echo "gpgkey=${gpgkey}" echo "gpgkey=${gpgkey}"
else else
echo "gpgcheck=0" echo "gpgcheck=0"
fi fi
} > "$repo_file" } > "$repofile"
TEMP_REPO_FILES+=( "$repo_file" )
dnf clean expire-cache --disablerepo='*' --enablerepo="$repoid" >/dev/null 2>&1 || true
# --- metadata_only sources: curate Discover/GNOME Software visibility # Bei Fehlschlag (z.B. Paket nicht gefunden) diese Quelle nicht den
# WITHOUT mirroring any RPM content. Use this when baseurl already # gesamten Lauf abbrechen lassen, aber laut melden.
# points at a repo your clients have enabled directly (e.g. AlmaLinux's if ! dnf download --resolve --alldeps \
# own AppStream repo, which ships dotnet-* itself on AlmaLinux 10) - the --disablerepo='*' --enablerepo="tmp-${name}" \
# actual package install is then resolved by dnf from that repo as --destdir="$DEST" "${packages[@]}"; then
# normal; this source only contributes AppStream "generic component" echo "[sync] WARNUNG: Download fuer Quelle '$name' teilweise fehlgeschlagen."
# 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
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 fi
# --- 2. List everything the source repo itself provides -------------- rm -f "$repofile"
# (used later to decide "does this RPM genuinely come from the source, done
# or did AlmaLinux already have it".)
local source_nevra_list="${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 '${name}' returned no packages - check baseurl"
# --- 3. Resolve full dependency closure for the requested packages --- # --- 3. Alte Paketversionen aufraeumen -----------------------------------
# Enable the source repo AND the local AlmaLinux repos so dependency echo "[sync] Raeume veraltete Paketversionen auf"
# resolution succeeds even for deps AlmaLinux normally provides - dnf repomanage --old "$DEST" | xargs -r rm -f || \
# we filter those back out in step 4. echo "[sync] WARNUNG: repomanage fehlgeschlagen, ueberspringe Aufraeumen."
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 -- # --- 4. RPM-Metadaten neu erzeugen ---------------------------------------
# the rest with the mirror's own key ----------------------------------- echo "[sync] Aktualisiere Repo-Metadaten"
local verify_dbpath="${list_dir}/verify-rpmdb" createrepo_c --update "$DEST"
if [[ -n "$gpgkey" ]]; then
local source_gpgkey_file="${list_dir}/source-gpgkey.asc" # --- 5. AppStream-Katalog erzeugen und einhaengen -------------------------
curl -fsSL "$gpgkey" -o "$source_gpgkey_file" \ # Ohne diesen Schritt sind die Pakete zwar per dnf installierbar, tauchen
|| die "could not fetch gpgkey for source '${name}' from ${gpgkey}" # aber weder in Discover noch in GNOME Software auf.
rm -rf "$verify_dbpath"; mkdir -p "$verify_dbpath" echo "[sync] Erzeuge AppStream-Katalog"
rpm --dbpath "$verify_dbpath" --initdb
rpm --dbpath "$verify_dbpath" --import "$source_gpgkey_file" \ ASWORK=$(mktemp -d)
|| die "could not import gpgkey for source '${name}'" trap 'rm -rf "$ASWORK"' EXIT
else
log " WARNING: source '${name}' has no gpgkey configured - skipping upstream signature verification" # Welche Pakete liegen tatsaechlich im Repo? Verhindert, dass Discover
# Eintraege anzeigt, deren RPM gar nicht da ist.
if compgen -G "$DEST"/*.rpm > /dev/null; then
rpm -qp --qf '%{NAME}\n' "$DEST"/*.rpm 2>/dev/null \
| sort -u > "$ASWORK/vorhanden.txt"
else
echo "[sync] WARNUNG: Keine RPMs in $DEST gefunden."
: > "$ASWORK/vorhanden.txt"
fi
python3 "$APPSTREAM_GEN" "$PACKAGES_FILE" \
--output "$ASWORK/appstream.xml.gz" \
--available-packages "$ASWORK/vorhanden.txt"
# Optionale Validierung, falls appstreamcli im Image vorhanden ist.
if command -v appstreamcli > /dev/null 2>&1; then
if ! appstreamcli validate --no-net "$ASWORK/appstream.xml.gz"; then
echo "[sync] WARNUNG: AppStream-Katalog hat Validierungshinweise."
fi fi
fi
local kept=0 dropped=0 kept_requested=0 kept_dependency=0 # modifyrepo_c MUSS nach createrepo_c laufen, da createrepo_c die
for f in "$tmp_dir"/*.rpm; do # repomd.xml komplett neu schreibt.
[[ -e "$f" ]] || continue modifyrepo_c --mdtype=appstream "$ASWORK/appstream.xml.gz" "$DEST/repodata/"
local base; base="$(basename "$f" .rpm)"
if ! grep -qxF "$base" "$source_nevra_list"; then echo "[sync] $(date -Iseconds) Sync-Lauf abgeschlossen"
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 <requested>` 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" <<EOF
[rpm-mirror]
name=RPM mirror
baseurl=${CLIENT_BASE_URL}/pkgs/
enabled=1
gpgcheck=1
gpgkey=${CLIENT_BASE_URL}/RPM-GPG-KEY-mirror
# gpgcheck=1 verifies each RPM's own signature (re-signed with the mirror
# key). repo_gpgcheck=1 additionally verifies repomd.xml itself against
# repomd.xml.asc (generated above) - together these confirm both the
# package contents AND the package listing/checksums came from this
# mirror, unmodified.
repo_gpgcheck=1
EOF
log "All sources synced into a single repo at ${PKG_DIR}/"
log "All mirrored packages are signed with mirror key ${MIRROR_GPG_KEY_ID} - clients only need ${MIRROR_GPG_KEY_FILE}."
log "Client setup (one command, one repo, done):"
log " curl -fsSL ${CLIENT_BASE_URL}/client-repos/mirror.repo -o /etc/yum.repos.d/rpm-mirror.repo && dnf makecache"