Tidy gnusocial app

src/freedombone-app-gnusocial

     if [ ! $ONION_ONLY ]; then
         ONION_ONLY='no'
     fi
-    if grep -q "ONION_ONLY" $CONFIGURATION_FILE; then
-        ONION_ONLY=$(grep "ONION_ONLY" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
-    fi
-    if grep -q "MICROBLOG_DOMAIN_NAME" $CONFIGURATION_FILE; then
-        MICROBLOG_DOMAIN_NAME=$(grep "MICROBLOG_DOMAIN_NAME" $CONFIGURATION_FILE | head -n 1 | awk -F '=' '{print $2}')
-    fi
-    if grep -q "MICROBLOG_CODE" $CONFIGURATION_FILE; then
-        MICROBLOG_CODE=$(grep "MICROBLOG_CODE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
-    fi
-    if grep -q "MICROBLOG_WELCOME_MESSAGE" $CONFIGURATION_FILE; then
-        MICROBLOG_WELCOME_MESSAGE=$(grep "MICROBLOG_WELCOME_MESSAGE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
-    fi
-    if grep -q "MICROBLOG_BACKGROUND_IMAGE_URL" $CONFIGURATION_FILE; then
-        MICROBLOG_BACKGROUND_IMAGE_URL=$(grep "MICROBLOG_BACKGROUND_IMAGE_URL" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
-    fi
-    if grep -q "DDNS_PROVIDER" $CONFIGURATION_FILE; then
-        DDNS_PROVIDER=$(grep "DDNS_PROVIDER" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
-    fi
+
+    read_config_param "MICROBLOG_COMMIT"
+    read_config_param "ONION_ONLY"
+    read_config_param "MICROBLOG_DOMAIN_NAME"
+    read_config_param "MICROBLOG_CODE"
+    read_config_param "MICROBLOG_WELCOME_MESSAGE"
+    read_config_param "MICROBLOG_BACKGROUND_IMAGE_URL"
+    read_config_param "DDNS_PROVIDER"
+
     if [[ $ONION_ONLY != "no" ]]; then
         MICROBLOG_DOMAIN_NAME='microblog.local'
     else
     if grep -q "gnusocial domain" $COMPLETION_FILE; then
         MICROBLOG_DOMAIN_NAME=$(cat $COMPLETION_FILE | grep "gnusocial domain" | head -n 1 | awk -F ':' '{print $2}')
     fi
+    read_config_param "MICROBLOG_COMMIT"
 
     # update to the next commit
     function_check set_repo_commit
     if [ ! $ONION_ONLY ]; then
         ONION_ONLY='no'
     fi
-    if grep -q "ONION_ONLY" $CONFIGURATION_FILE; then
-        ONION_ONLY=$(grep "ONION_ONLY" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
-    fi
-    if grep -q "MICROBLOG_DOMAIN_NAME" $CONFIGURATION_FILE; then
-        MICROBLOG_DOMAIN_NAME=$(grep "MICROBLOG_DOMAIN_NAME" $CONFIGURATION_FILE | head -n 1 | awk -F '=' '{print $2}')
-    fi
-    if grep -q "MICROBLOG_CODE" $CONFIGURATION_FILE; then
-        MICROBLOG_CODE=$(grep "MICROBLOG_CODE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
-    fi
-    if grep -q "MICROBLOG_WELCOME_MESSAGE" $CONFIGURATION_FILE; then
-        MICROBLOG_WELCOME_MESSAGE=$(grep "MICROBLOG_WELCOME_MESSAGE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
-    fi
-    if grep -q "MICROBLOG_BACKGROUND_IMAGE_URL" $CONFIGURATION_FILE; then
-        MICROBLOG_BACKGROUND_IMAGE_URL=$(grep "MICROBLOG_BACKGROUND_IMAGE_URL" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
-    fi
-    if grep -q "DDNS_PROVIDER" $CONFIGURATION_FILE; then
-        DDNS_PROVIDER=$(grep "DDNS_PROVIDER" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
-    fi
+    read_config_param "MICROBLOG_COMMIT"
+    read_config_param "ONION_ONLY"
+    read_config_param "MICROBLOG_DOMAIN_NAME"
+    read_config_param "MICROBLOG_CODE"
+    read_config_param "MICROBLOG_WELCOME_MESSAGE"
+    read_config_param "MICROBLOG_BACKGROUND_IMAGE_URL"
+    read_config_param "DDNS_PROVIDER"
 
     install_gnusocial_main
     expire_gnusocial_posts

src/freedombone-utils-config

 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+function read_config_param {
+    param_name="$1"
+
+    if [ -f $CONFIGURATION_FILE ]; then
+        if grep -q "$param_name" $CONFIGURATION_FILE; then
+            $param_name=$(grep "$param_name" $CONFIGURATION_FILE | head -n 1 | awk -F '=' '{print $2}')
+        fi
+    fi
+}
+
 function read_configuration {
     # if not installing on a Beaglebone then use sdb as the USB drive by default
     if [ ! $INSTALLING_ON_BBB ]; then
         if grep -q "RSS_READER_DOMAIN_NAME" $CONFIGURATION_FILE; then
             RSS_READER_DOMAIN_NAME=$(grep "RSS_READER_DOMAIN_NAME" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
         fi
-        if grep -q "MICROBLOG_BACKGROUND_IMAGE_URL" $CONFIGURATION_FILE; then
-            MICROBLOG_BACKGROUND_IMAGE_URL=$(grep "MICROBLOG_BACKGROUND_IMAGE_URL" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
-        fi
-        if grep -q "MICROBLOG_WELCOME_MESSAGE" $CONFIGURATION_FILE; then
-            MICROBLOG_WELCOME_MESSAGE=$(grep "MICROBLOG_WELCOME_MESSAGE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
-        fi
         if grep -q "PROJECT_WEBSITE" $CONFIGURATION_FILE; then
             PROJECT_WEBSITE=$(grep "PROJECT_WEBSITE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
         fi
         if grep -q "ZERONET_FORUM_COMMIT" $CONFIGURATION_FILE; then
             ZERONET_FORUM_COMMIT=$(grep "ZERONET_FORUM_COMMIT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
         fi
-        if grep -q "MICROBLOG_COMMIT" $CONFIGURATION_FILE; then
-            MICROBLOG_COMMIT=$(grep "MICROBLOG_COMMIT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
-        fi
         if grep -q "NGINX_ENSITE_REPO" $CONFIGURATION_FILE; then
             NGINX_ENSITE_REPO=$(grep "NGINX_ENSITE_REPO" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
         fi
         if grep -q "PUBLIC_MAILING_LIST" $CONFIGURATION_FILE; then
             PUBLIC_MAILING_LIST=$(grep "PUBLIC_MAILING_LIST" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
         fi
-        if grep -q "MICROBLOG_DOMAIN_NAME" $CONFIGURATION_FILE; then
-            MICROBLOG_DOMAIN_NAME=$(grep "MICROBLOG_DOMAIN_NAME" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
-        fi
-        if grep -q "MICROBLOG_CODE" $CONFIGURATION_FILE; then
-            MICROBLOG_CODE=$(grep "MICROBLOG_CODE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
-        fi
         if grep -q "HUBZILLA_DOMAIN_NAME" $CONFIGURATION_FILE; then
             HUBZILLA_DOMAIN_NAME=$(grep "HUBZILLA_DOMAIN_NAME" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
         fi