Add helper to fetch release tarballs

scripts/fetch-tarballs.sh

@@ -0,0 +1,43 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Downloads release tarballs into ./vendor (skips existing files).
+# Defaults to current stable versions; override via env:
+#   GNUNET_VERSION, EXCHANGE_VERSION, MERCHANT_VERSION, LIBEUFIN_VERSION
+#   GNUNET_TARBALL_URL, EXCHANGE_TARBALL_URL, MERCHANT_TARBALL_URL, LIBEUFIN_TARBALL_URL
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+VENDOR_DIR="${ROOT_DIR}/vendor"
+mkdir -p "${VENDOR_DIR}"
+
+GNUNET_VERSION="${GNUNET_VERSION:-0.26.1}"
+EXCHANGE_VERSION="${EXCHANGE_VERSION:-1.2.2}"
+MERCHANT_VERSION="${MERCHANT_VERSION:-1.1.6}"
+LIBEUFIN_VERSION="${LIBEUFIN_VERSION:-1.2.3}"
+
+GNUNET_URL="${GNUNET_TARBALL_URL:-https://ftp.fau.de/gnu/taler/gnunet-debian-${GNUNET_VERSION}.tar.gz}"
+EXCHANGE_URL="${EXCHANGE_TARBALL_URL:-https://ftp.fau.de/gnu/taler/exchange-${EXCHANGE_VERSION}.tar.gz}"
+MERCHANT_URL="${MERCHANT_TARBALL_URL:-https://ftp.fau.de/gnu/taler/merchant-${MERCHANT_VERSION}.tar.gz}"
+LIBEUFIN_URL="${LIBEUFIN_TARBALL_URL:-https://ftp.fau.de/gnu/taler/libeufin-${LIBEUFIN_VERSION}.tar.gz}"
+
+fetch() {
+  local url="$1"
+  local dest="${VENDOR_DIR}/$(basename "$url")"
+  local name
+  name="$(basename "$dest")"
+
+  if [[ -f "$dest" ]]; then
+    echo "✔ ${name} already present"
+    return 0
+  fi
+
+  echo "→ Downloading ${name}"
+  curl -fL "$url" -o "$dest"
+}
+
+fetch "$GNUNET_URL"
+fetch "$EXCHANGE_URL"
+fetch "$MERCHANT_URL"
+fetch "$LIBEUFIN_URL"
+
+echo "Done. Tarballs are in ${VENDOR_DIR}"