Refactor of live_exam_os for ubuntu

live_exam_os/config/03-post_install/1000-create-user.sh

+#/bin/bash
+
+. tools/functions.sh
+
+echo " [User managing...]"
+run_command_chroot useradd -m user
+run_command_chroot usermod -aG video user
+run_command_chroot usermod -aG input user
+run_command_chroot usermod -aG plugdev user
+run_command_chroot chown -R 1000:1000 /home/user/

live_exam_os/config/03-post_install/1000-disable_root.sh

+#/bin/sh
+
+. tools/functions.sh
+
+echo " [Disable root user...]"
+run_command_chroot passwd -l root

live_exam_os/config/03-post_install/2000-enable_services.sh

+#/bin/sh
+
+. tools/functions.sh
+
+echo " [Enabling services...]"
+run_command_chroot systemctl enable NetworkManager
+run_command_chroot systemctl enable ufw

live_exam_os/config/03-post_install/3000-nexus_exam.sh

+#/bin/bash
+
+. tools/functions.sh
+
+echo " [Compiling nexus-exam...]"
+cd ..
+run_command make build_nexus-exam SERVER=$SERVER CERT=$CERT EXAM_USER=$EXAM_USER EXAM_PWD=$EXAM_PWD
+check_exit_code $? "Error during nexus-exam compilation"
+if [[ "$ROOTFS_DIR" != /* ]]; then
+  mkdir -p live_exam_os/$ROOTFS_DIR/usr/local/bin
+  cp build/nexus-exam live_exam_os/$ROOTFS_DIR/usr/local/bin/nexus-exam
+else
+  mkdir -p $ROOTFS_DIR/usr/local/bin
+  cp build/nexus-exam $ROOTFS_DIR/usr/local/bin/nexus-exam
+fi
+make clean_client
+cd -

live_exam_os/config/03-post_install/4000-firewall.sh

+#!/bin/sh
+
+. tools/functions.sh
+
+IP_SERVER=$(echo $SERVER | cut -d ':' -f1)
+PORT_SERVER=$(echo $SERVER | cut -d ':' -f2)
+
+echo " [Firewall configuration...]"
+
+run_command_chroot ufw default deny incoming
+run_command_chroot ufw default deny outgoing
+run_command_chroot ufw allow out from any to $IP_SERVER port $PORT_SERVER proto tcp
+run_command_chroot ufw allow out from any to any port 123 proto udp
+run_command_chroot ufw allow out from any to any port 53 proto udp
+run_command_chroot ufw allow out from any to $IP_SERVER port 1025:65535 proto tcp
+run_command_chroot ufw enable

live_exam_os/config/03-post_install/5000-pxe.sh

+#/bin/bash
+
+. tools/functions.sh
+
+if [ ! -z $PXE_URL ]; then
+  echo " [Adding PXE url...]"
+  echo -n "$PXE_URL/$LUKS_IMG" > $ROOTFS_DIR/etc/squashfs-url
+fi

live_exam_os/config/03-post_install/9999-initramfs.sh

+#!/bin/sh
+
+. tools/functions.sh
+
+echo " [Update initramfs...]"
+run_command_chroot update-initramfs -u
+check_exit_code $? "Error during initramfs generation"

live_exam_os/config/04-post_install/1000-create-user.sh

-#/bin/sh
-
-run() {
-  chroot "$ROOTFS_DIR" $@
-}
-
-echo "[User managing...]"
-run useradd -m user
-run usermod -aG video user
-run usermod -aG input user
-run usermod -aG plugdev user
-run usermod -aG wheel user
-chown -R 1000:1000 $ROOTFS_DIR/home/user/
-USER_PASSWORD="0"
-echo "user:$USER_PASSWORD" | chroot "$ROOTFS_DIR" /usr/sbin/chpasswd
-echo "%wheel ALL=(ALL:ALL) ALL" >> "$ROOTFS_DIR/etc/sudoers.d/wheel"

live_exam_os/config/04-post_install/1000-disable_root.sh

-#/bin/sh
-
-run() {
-  chroot "$ROOTFS_DIR" $@
-}
-
-echo "[Disable root user...]"
-run passwd -l root

live_exam_os/config/04-post_install/2000-enable_services.sh

-#/bin/sh
-
-run() {
-  chroot "$ROOTFS_DIR" $@
-}
-
-echo "[Enabling services...]"
-run rc-update add dbus
-run setup-devd udev
-run rc-update add polkit
-run rc-update add elogind
-run rc-update add networkmanager
-run rc-update add ufw

live_exam_os/config/04-post_install/9999-firewall.sh

-#!/bin/sh
-
-IP_SERVER=$(echo $SERVER | cut -d ':' -f1)
-PORT_SERVER=$(echo $SERVER | cut -d ':' -f2)
-
-run() {
-  chroot "$ROOTFS_DIR" $@
-}
-
-echo "[Firewall configuration...]"
-
-run ufw default deny incoming
-run ufw default deny outgoing
-run ufw allow out from any to $IP_SERVER port $PORT_SERVER proto tcp
-run ufw allow out from any to any port 123 proto udp
-run ufw allow out from any to any port 53 proto udp
-run ufw allow out from any to $IP_SERVER port 1025:65535 proto tcp
-run ufw enable

live_exam_os/tools/functions.sh

+run() {
+  chroot "$ROOTFS_DIR" $@
+}
+
+run_command() {
+  local cmd="$@"
+  if $VERBOSE; then
+      echo $cmd
+      bash -c "$cmd"
+      EXIT_CODE=$?
+  else
+      bash -c "$cmd" > /dev/null 2>&1
+      EXIT_CODE=$?
+  fi
+  return $EXIT_CODE
+}
+
+run_command_chroot() {
+  run_command chroot "$ROOTFS_DIR" $@
+}
+
+check_exit_code() {
+  EXIT_CODE=$1
+  if [ ! $EXIT_CODE -eq 0 ]; then
+    echo $2
+    exit
+  fi
+}
+
+check_environment_var() {
+  if [ -z $SERVER ] || [ -z $CERT ] || [ -z $EXAM_USER ] || [ -z $EXAM_PWD ]; then
+    echo "Error: Environment variables aren't set"
+    echo "SERVER = $SERVER"
+    echo "CERT = $CERT"
+    echo "EXAM_USER = $EXAM_USER"
+    echo "EXAM_PWD = $EXAM_PWD"
+    helper
+  fi
+}