start working on exp

experiment/download_apk.sh

@@ -0,0 +1,45 @@
+#!/usr/bin/env bash
+
+APK_LIST="${1}"
+APK_DIR="${2}"
+
+ANDROZOO_URL="https://androzoo.uni.lu/api/download"
+
+
+if [ ! -f "${APK_LIST}" ]; then 
+    echo "Usage: bash ${0} apk_list.txt /path/to/apk/dir"
+    echo "    apk_list.txt is a file containing the sha256 of the applications to download"
+    echo "    /path/to/apk/dir is the folder where to store the application downloaded"
+    exit
+fi
+
+read -s -p "Androzoo Key: " APIKEY
+
+TMP_DIR=$(mktemp -d)
+mkdir -p "${APK_DIR}"
+
+# split the apks to download into 10 chunks
+mkdir -p "${TMP_DIR}/apks"
+N_CHUNK=$(python3 -c "print($(cat ${APK_LIST} | wc -l)//10 + 1)")
+split -a 2 -d -l "${N_CHUNK}" "${APK_LIST}" "${TMP_DIR}/apks/"
+
+androzoo() {
+  sha="${1}"
+  curl -o "${APK_DIR}/${sha}.apk" -G -d apikey=${APIKEY} -d sha256=${sha} "${ANDROZOO_URL}"
+}
+
+worker() {
+  for sha in $(cat "${TMP_DIR}/apks/${1}"); do
+    if [ ! -f "${APK_DIR}/${sha}.apk" ]; then
+      echo "Download ${sha}"
+      androzoo "${sha}"
+    fi
+  done
+  echo "Finished ${1}"
+}
+
+for lst in $(ls "${TMP_DIR}/apks/"); do
+  worker "${lst}"
+done
+
+rm -rf "${TMP_DIR}"