entrypoint.sh: moved codeblocks into functions

entrypoint.sh

@@ -1,66 +1,82 @@
 #!/bin/bash
 set -e
 
-case "$1" in
-  install)
-    echo "Installing browser-box..."
-    install -m 0755 /scripts/browser-box /target/
-    echo "Installing google-chrome..."
-    ln -sf browser-box /target/google-chrome
-    echo "Installing google-chrome-stable..."
-    ln -sf browser-box /target/google-chrome-stable
-    echo "Installing tor-browser..."
-    ln -sf browser-box /target/tor-browser
-    echo "Installing chromium-browser..."
-    ln -sf browser-box /target/chromium-browser
-    echo "Installing firefox..."
-    ln -sf browser-box /target/firefox
-    ;;
-  uninstall)
-    echo "Uninstalling browser-box..."
-    rm -rf /target/browser-box
-    echo "Uninstalling google-chrome..."
-    rm -rf /target/google-chrome
-    echo "Uninstalling google-chrome-stable..."
-    rm -rf /target/google-chrome-stable
-    echo "Uninstalling tor-browser..."
-    rm -rf /target/tor-browser
-    echo "Uninstalling chromium-browser..."
-    rm -rf /target/chromium-browser
-    echo "Uninstalling firefox..."
-    rm -rf /target/firefox
-    ;;
-  google-chrome|google-chrome-stable|tor-browser|chromium-browser|firefox)
-    # uid and gid of host user
-    USER_UID=${USER_UID:-1000}
-    USER_GID=${USER_GID:-1000}
+USER_UID=${USER_UID:-1000}
+USER_GID=${USER_GID:-1000}
 
-    # create user group
-    if ! getent group ${WEB_BROWSER_USER} >/dev/null; then
-      groupadd -f -g ${USER_GID} ${WEB_BROWSER_USER}
-    fi
+install_browser_box() {
+  echo "Installing browser-box..."
+  install -m 0755 /scripts/browser-box /target/
+  echo "Installing google-chrome..."
+  ln -sf browser-box /target/google-chrome
+  echo "Installing google-chrome-stable..."
+  ln -sf browser-box /target/google-chrome-stable
+  echo "Installing tor-browser..."
+  ln -sf browser-box /target/tor-browser
+  echo "Installing chromium-browser..."
+  ln -sf browser-box /target/chromium-browser
+  echo "Installing firefox..."
+  ln -sf browser-box /target/firefox
+}
 
-    # create user with uid and gid matching that of the host user
-    if ! getent passwd ${WEB_BROWSER_USER} >/dev/null; then
-      adduser --disabled-login --uid ${USER_UID} --gid ${USER_GID} \
-        --gecos 'Browser Box' ${WEB_BROWSER_USER}
-    fi
+uninstall_browser_box() {
+  echo "Uninstalling browser-box..."
+  rm -rf /target/browser-box
+  echo "Uninstalling google-chrome..."
+  rm -rf /target/google-chrome
+  echo "Uninstalling google-chrome-stable..."
+  rm -rf /target/google-chrome-stable
+  echo "Uninstalling tor-browser..."
+  rm -rf /target/tor-browser
+  echo "Uninstalling chromium-browser..."
+  rm -rf /target/chromium-browser
+  echo "Uninstalling firefox..."
+  rm -rf /target/firefox
+}
+
+create_user() {
+  # create group with USER_GID
+  if ! getent group ${WEB_BROWSER_USER} >/dev/null; then
+    groupadd -f -g ${USER_GID} ${WEB_BROWSER_USER}
+  fi
 
-    # grant access to video devices
-    for device in /dev/video*
-    do
-      if [[ -c $device ]]; then
-        VIDEO_GID=$(stat -c %g $device)
-        break
-      fi
-    done
+  # create user with USER_UID
+  if ! getent passwd ${WEB_BROWSER_USER} >/dev/null; then
+    adduser --disabled-login --uid ${USER_UID} --gid ${USER_GID} \
+      --gecos 'Browser Box' ${WEB_BROWSER_USER}
+  fi
+}
 
-    if [[ -n $VIDEO_GID ]]; then
-      usermod -a -G $VIDEO_GID ${WEB_BROWSER_USER}
+grant_access_to_video_devices() {
+  for device in /dev/video*
+  do
+    if [[ -c $device ]]; then
+      VIDEO_GID=$(stat -c %g $device)
+      break
     fi
+  done
 
-    cd /home/${WEB_BROWSER_USER}
-    exec sudo -u ${WEB_BROWSER_USER} -H PULSE_SERVER=/run/pulse/native $@ ${extra_opts}
+  if [[ -n $VIDEO_GID ]]; then
+    usermod -a -G $VIDEO_GID ${WEB_BROWSER_USER}
+  fi
+}
+
+launch_browser() {
+  cd /home/${WEB_BROWSER_USER}
+  exec sudo -u ${WEB_BROWSER_USER} -H PULSE_SERVER=/run/pulse/native $@ ${extra_opts}
+}
+
+case "$1" in
+  install)
+    install_browser_box
+    ;;
+  uninstall)
+    uninstall_browser_box
+    ;;
+  google-chrome|google-chrome-stable|tor-browser|chromium-browser|firefox)
+    create_user
+    grant_access_to_video_devices
+    launch_browser $@
     ;;
   bash)
     exec $@