Check for errors in archive download, fix --version, whitespace consistency

build-libssl.sh

@@ -200,7 +200,7 @@ elif [ -n "${BRANCH}" ]; then
   fi
 
 # Script default
-else
+elif [ -z "${VERSION}" ]; then
   VERSION="${DEFAULTVERSION}"
 fi
 
@@ -268,20 +268,29 @@ fi
 echo "  Script directory and build location: ${CURRENTPATH}"
 echo
 
-# -e  Abort script at first error, when a command exits with non-zero status (except in until or while loops, if-tests, list constructs)
-# -o pipefail  Causes a pipeline to return the exit status of the last command in the pipe that returned a non-zero return value
-set -eo pipefail
-
 # Download OpenSSL when not present
 OPENSSL_ARCHIVE_BASE_NAME=OpenSSL_${GITHUB_VERSION}
 OPENSSL_ARCHIVE_FILE_NAME=${OPENSSL_ARCHIVE_BASE_NAME}.tar.gz
 if [ ! -e ${OPENSSL_ARCHIVE_FILE_NAME} ]; then
   echo "Downloading ${OPENSSL_ARCHIVE_FILE_NAME}..."
-  curl ${CURL_OPTIONS} -L -O https://github.com/openssl/openssl/archive/${OPENSSL_ARCHIVE_FILE_NAME}
+  OPENSSL_ARCHIVE_URL="https://github.com/openssl/openssl/archive/${OPENSSL_ARCHIVE_FILE_NAME}"
+  # -L follow Location header, -f fail silently for 4xx errors and return status 22, -O Use server-specified filename for download
+  curl ${CURL_OPTIONS} -LfO "${OPENSSL_ARCHIVE_URL}"
+  
+  # Check for success status
+  if [ $? -ne 0 ]; then
+    echo "An error occured when trying to download OpenSSL ${VERSION} from ${OPENSSL_ARCHIVE_URL}."
+    echo "Please check cURL's error message and/or your network connection."
+    exit 1
+  fi
 else
   echo "Using ${OPENSSL_ARCHIVE_FILE_NAME}"
 fi
 
+# -e  Abort script at first error, when a command exits with non-zero status (except in until or while loops, if-tests, list constructs)
+# -o pipefail  Causes a pipeline to return the exit status of the last command in the pipe that returned a non-zero return value
+set -eo pipefail
+
 # Clean up target directories if requested and present
 if [ "${CLEANUP}" == "true" ]; then
   if [ -d "${CURRENTPATH}/bin" ]; then