Download needed files in script.sh; update README.md.

script.sh

@@ -1,9 +1,75 @@
-#!/bin/sh
+#!/bin/bash
 set -
+
+DOWNLOAD_URL="https://www.supermicro.com/wdl/utility/IPMIView/Linux/"
+LOCAL_DOWNLOAD_LOCATION="./SM_download"
+
+if which wget >/dev/null; then
+  echo "Downloading latest version of IPMIView from [${DOWNLOAD_URL}]..."
+  wget \
+    --timestamping \
+    --recursive \
+    --level=1 \
+    -q \
+    --show-progress \
+    --directory-prefix="${LOCAL_DOWNLOAD_LOCATION}/" \
+    --no-parent \
+    --no-directories \
+    --reject index.html,index.html.tmp,robots.txt,robots.txt.tmp \
+    "${DOWNLOAD_URL}"
+  rm "${LOCAL_DOWNLOAD_LOCATION}/"robots.txt*
+
+  # Check MD5
+  EXPECTED_MD5=$(\grep MD5 "${LOCAL_DOWNLOAD_LOCATION}/CheckSum.txt" | cut -d':' -f2 | tr -d "[:space:]" | tr '[:upper:]' '[:lower:]')
+  ACTUAL_MD5=$(md5sum "${LOCAL_DOWNLOAD_LOCATION}"/IPMIView*.tar* | cut -d' ' -f1 | tr -d "[:space:]" | tr '[:upper:]' '[:lower:]')
+  if ! diff <(echo "${EXPECTED_MD5}") <(echo "${ACTUAL_MD5}"); then
+    echo "MD5 is not as expected; download corrupted."
+    echo "Expected: [${EXPECTED_MD5}]"
+    echo "Actual:   [${ACTUAL_MD5}]"
+    echo "Exiting."
+    exit 1
+  fi
+
+  # Check SHA-256
+  EXPECTED_SHA256=$(\grep MD5 "${LOCAL_DOWNLOAD_LOCATION}/CheckSum.txt" | cut -d':' -f2 | tr -d "[:space:]" | tr '[:upper:]' '[:lower:]')
+  ACTUAL_SHA256=$(md5sum "${LOCAL_DOWNLOAD_LOCATION}"/IPMIView*.tar* | cut -d' ' -f1 | tr -d "[:space:]" | tr '[:upper:]' '[:lower:]')
+  if ! diff <(echo "${EXPECTED_SHA256}") <(echo "${ACTUAL_SHA256}"); then
+    echo "SHA-256 is not as expected; download corrupted."
+    echo "Expected: [${EXPECTED_SHA256}]"
+    echo "Actual:   [${ACTUAL_SHA256}]"
+    echo "Exiting."
+    exit 1
+  fi
+
+else
+  echo "WARNING: 'wget' CLI not found."
+  echo
+  echo "Please visit ${DOWNLOAD_URL} to download the latest version of IPMIView and copy the archive into $(pwd)/${LOCAL_DOWNLOAD_LOCATION}/"
+  echo
+  # shellcheck disable=SC2034,SC2162
+  echo "Press [Enter] to continue" && read answer
+fi
+
+echo "Extracting contents of downloaded IPMIView archive..."
+if [[ -d Contents/ ]]; then
+  rm -rf Contents/
+fi
 mkdir -p Contents/Resources/IPMIView/Contents/Home/bin
-tar -zxvf ~/Downloads/IPMIView*.tar.gz --strip=1 -C ./Contents/Resources/IPMIView/. ||
-  tar -xvf ~/Downloads/IPMIView*.tar --strip=1 -C ./Contents/Resources/IPMIView/. ||
+tar -zxf "${LOCAL_DOWNLOAD_LOCATION}"/IPMIView*.tar* --strip=1 -C ./Contents/Resources/IPMIView/. ||
   { echo "Something went wrong, check download of IPMIView archive" && exit 1; }
+
+echo "Linking 'java' and 'jre'..."
 ln -s /usr/bin/java Contents/Resources/IPMIView/Contents/Home/bin/java
-cd ..
-rsync -arv --exclude=.git --exclude=Contents/Resources/IPMIView/jre IPMIView.app ~/Applications
+rm -rf Contents/Resources/IPMIView/jre/*
+pushd Contents/Resources/IPMIView/jre/ >/dev/null &&
+  ln -s ../Contents . &&
+  popd >/dev/null || exit
+
+echo "Copying IPMIView.app over to ~/Applications directory..."
+pushd .. >/dev/null &&
+  rsync -ar --exclude=.git --exclude=Contents/Resources/IPMIView/jre IPMIView.app ~/Applications &&
+  popd >/dev/null || exit
+
+echo "Completed."
+echo
+echo "You can now open ~/Applications/IPMIView.app"