Tidying

src/freedombone

     read_config_param 'DEFAULT_DOMAIN_NAME'
     read_config_param 'MY_USERNAME'
     read_config_param 'SYSTEM_TYPE'
+    read_config_param 'ONION_ONLY'
 
     if [ ! -d /home/$MY_USERNAME ]; then
         echo $"There is no user '$MY_USERNAME' on the system. Use 'adduser $MY_USERNAME' to create the user."

src/freedombone-app-blog

             fi
         done
 
-        if grep -q "MY_BLOG_TITLE=" $CONFIGURATION_FILE; then
-            sed -i "s|MY_BLOG_TITLE=.*|MY_BLOG_TITLE=$MY_BLOG_TITLE|g" $CONFIGURATION_FILE
-        else
-            echo "MY_BLOG_TITLE=$MY_BLOG_TITLE" >> $CONFIGURATION_FILE
-        fi
-        if grep -q "FULLBLOG_DOMAIN_NAME=" $CONFIGURATION_FILE; then
-            sed -i "s|FULLBLOG_DOMAIN_NAME=.*|FULLBLOG_DOMAIN_NAME=$FULLBLOG_DOMAIN_NAME|g" $CONFIGURATION_FILE
-        else
-            echo "FULLBLOG_DOMAIN_NAME=$FULLBLOG_DOMAIN_NAME" >> $CONFIGURATION_FILE
-        fi
-        if grep -q "FULLBLOG_CODE=" $CONFIGURATION_FILE; then
-            sed -i "s|FULLBLOG_CODE=.*|FULLBLOG_CODE=$FULLBLOG_CODE|g" $CONFIGURATION_FILE
-        else
-            echo "FULLBLOG_CODE=$FULLBLOG_CODE" >> $CONFIGURATION_FILE
-        fi
+        write_config_param "MY_BLOG_TITLE" "$MY_BLOG_TITLE"
+        write_config_param "FULLBLOG_DOMAIN_NAME" "$FULLBLOG_DOMAIN_NAME"
+        write_config_param "FULLBLOG_CODE" "$FULLBLOG_CODE"
     fi
 }
 

src/freedombone-app-gnusocial

             fi
         done
         # save the results in the config file
-        if grep -q "MICROBLOG_DOMAIN_NAME=" $CONFIGURATION_FILE; then
-            sed -i "s|MICROBLOG_DOMAIN_NAME=.*|MICROBLOG_DOMAIN_NAME=$MICROBLOG_DOMAIN_NAME|g" $CONFIGURATION_FILE
-        else
-            echo "MICROBLOG_DOMAIN_NAME=$MICROBLOG_DOMAIN_NAME" >> $CONFIGURATION_FILE
-        fi
-        if grep -q "MICROBLOG_CODE=" $CONFIGURATION_FILE; then
-            sed -i "s|MICROBLOG_CODE=.*|MICROBLOG_CODE=$MICROBLOG_CODE|g" $CONFIGURATION_FILE
-        else
-            echo "MICROBLOG_CODE=$MICROBLOG_CODE" >> $CONFIGURATION_FILE
-        fi
-        if grep -q "MICROBLOG_WELCOME_MESSAGE=" $CONFIGURATION_FILE; then
-            sed -i "s|MICROBLOG_WELCOME_MESSAGE=.*|MICROBLOG_WELCOME_MESSAGE=$MICROBLOG_WELCOME_MESSAGE|g" $CONFIGURATION_FILE
-        else
-            echo "MICROBLOG_WELCOME_MESSAGE=$MICROBLOG_WELCOME_MESSAGE" >> $CONFIGURATION_FILE
-        fi
-        if grep -q "MICROBLOG_BACKGROUND_IMAGE_URL=" $CONFIGURATION_FILE; then
-            sed -i "s|MICROBLOG_BACKGROUND_IMAGE_URL=.*|MICROBLOG_BACKGROUND_IMAGE_URL=$MICROBLOG_BACKGROUND_IMAGE_URL|g" $CONFIGURATION_FILE
-        else
-            echo "MICROBLOG_BACKGROUND_IMAGE_URL=$MICROBLOG_BACKGROUND_IMAGE_URL" >> $CONFIGURATION_FILE
-        fi
+        write_config_param "MICROBLOG_DOMAIN_NAME" "$MICROBLOG_DOMAIN_NAME"
+        write_config_param "MICROBLOG_CODE" "$MICROBLOG_CODE"
+        write_config_param "MICROBLOG_WELCOME_MESSAGE" "$MICROBLOG_WELCOME_MESSAGE"
+        write_config_param "MICROBLOG_BACKGROUND_IMAGE_URL" "$MICROBLOG_BACKGROUND_IMAGE_URL"
     fi
 }
 

src/freedombone-app-gogs

         done
 
         # save the results in the config file
-        if grep -q "GIT_DOMAIN_NAME=" ${CONFIGURATION_FILE}; then
-            sed -i "s|GIT_DOMAIN_NAME=.*|GIT_DOMAIN_NAME=$GIT_DOMAIN_NAME|g" ${CONFIGURATION_FILE}
-        else
-            echo "GIT_DOMAIN_NAME=$GIT_DOMAIN_NAME" >> ${CONFIGURATION_FILE}
-        fi
-        if grep -q "GIT_CODE=" ${CONFIGURATION_FILE}; then
-            sed -i "s|GIT_CODE=.*|GIT_CODE=$GIT_CODE|g" ${CONFIGURATION_FILE}
-        else
-            echo "GIT_CODE=$GIT_CODE" >> ${CONFIGURATION_FILE}
-        fi
+        write_config_param "GIT_DOMAIN_NAME" "$GIT_DOMAIN_NAME"
+        write_config_param "GIT_CODE" "$GIT_CODE"
     fi
 }
 

src/freedombone-app-hubzilla

             fi
         done
         # save the results in the config file
-        if grep -q "HUBZILLA_DOMAIN_NAME=" $CONFIGURATION_FILE; then
-            sed -i "s|HUBZILLA_DOMAIN_NAME=.*|HUBZILLA_DOMAIN_NAME=$HUBZILLA_DOMAIN_NAME|g" $CONFIGURATION_FILE
-        else
-            echo "HUBZILLA_DOMAIN_NAME=$HUBZILLA_DOMAIN_NAME" >> $CONFIGURATION_FILE
-        fi
-        if grep -q "HUBZILLA_CODE=" $CONFIGURATION_FILE; then
-            sed -i "s|HUBZILLA_CODE=.*|HUBZILLA_CODE=$HUBZILLA_CODE|g" $CONFIGURATION_FILE
-        else
-            echo "HUBZILLA_CODE=$HUBZILLA_CODE" >> $CONFIGURATION_FILE
-        fi
+        write_config_param "HUBZILLA_DOMAIN_NAME" "$HUBZILLA_DOMAIN_NAME"
+        write_config_param "HUBZILLA_CODE" "$HUBZILLA_CODE"
     fi
 }
 

src/freedombone-app-mediagoblin

                 fi
             fi
         done
+
         # save the results in the config file
-        if grep -q "MEDIAGOBLIN_DOMAIN_NAME=" $CONFIGURATION_FILE; then
-            sed -i "s|MEDIAGOBLIN_DOMAIN_NAME=.*|MEDIAGOBLIN_DOMAIN_NAME=$MEDIAGOBLIN_DOMAIN_NAME|g" $CONFIGURATION_FILE
-        else
-            echo "MEDIAGOBLIN_DOMAIN_NAME=$MEDIAGOBLIN_DOMAIN_NAME" >> $CONFIGURATION_FILE
-        fi
-        if grep -q "MEDIAGOBLIN_CODE=" $CONFIGURATION_FILE; then
-            sed -i "s|MEDIAGOBLIN_CODE=.*|MEDIAGOBLIN_CODE=$MEDIAGOBLIN_CODE|g" $CONFIGURATION_FILE
-        else
-            echo "MEDIAGOBLIN_CODE=$MEDIAGOBLIN_CODE" >> $CONFIGURATION_FILE
-        fi
+        write_config_param "MEDIAGOBLIN_DOMAIN_NAME" "$MEDIAGOBLIN_DOMAIN_NAME"
+        write_config_param "MEDIAGOBLIN_CODE" "$MEDIAGOBLIN_CODE"
     fi
 }
 

src/freedombone-app-wiki

         done
 
         # save the results in the config file
-        if grep -q "WIKI_TITLE=" $CONFIGURATION_FILE; then
-            sed -i "s|WIKI_TITLE=.*|WIKI_TITLE=$WIKI_TITLE|g" $CONFIGURATION_FILE
-        else
-            echo "WIKI_TITLE=$WIKI_TITLE" >> $CONFIGURATION_FILE
-        fi
-        if grep -q "WIKI_DOMAIN_NAME=" $CONFIGURATION_FILE; then
-            sed -i "s|WIKI_DOMAIN_NAME=.*|WIKI_DOMAIN_NAME=$WIKI_DOMAIN_NAME|g" $CONFIGURATION_FILE
-        else
-            echo "WIKI_DOMAIN_NAME=$WIKI_DOMAIN_NAME" >> $CONFIGURATION_FILE
-        fi
-        if grep -q "WIKI_CODE=" $CONFIGURATION_FILE; then
-            sed -i "s|WIKI_CODE=.*|WIKI_CODE=$WIKI_CODE|g" $CONFIGURATION_FILE
-        else
-            echo "WIKI_CODE=$WIKI_CODE" >> $CONFIGURATION_FILE
-        fi
+        write_config_param "WIKI_TITLE" "$WIKI_TITLE"
+        write_config_param "WIKI_DOMAIN_NAME" "$WIKI_DOMAIN_NAME"
+        write_config_param "WIKI_CODE" "$WIKI_CODE"
     fi
 }
 

src/freedombone-utils-config

     fi
 }
 
+function write_config_param {
+    param_name="$1"
+    param_value="$2"
+
+    if [ $CONFIGURATION_FILE ]; then
+        if [ -f $CONFIGURATION_FILE ]; then
+            if grep -q "${param_name}=" $CONFIGURATION_FILE; then
+                sed -i "s|${param_name}=.*|${param_name}=${param_value}|g" $CONFIGURATION_FILE
+            else
+                echo "${param_name}=${param_value}" >> $CONFIGURATION_FILE
+            fi
+        else
+            echo "${param_name}=${param_value}" > $CONFIGURATION_FILE
+        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

src/freedombone-utils-selector

     return 1
 }
 
+# returns a list of available system variants
+# based upon the variants string in each app script
+function available_system_variants {
+    FILES=/usr/share/${PROJECT_NAME}/apps/${PROJECT_NAME}-app-*
+
+    for filename in $FILES
+    do
+        variants_list=$(app_variants $filename)
+        variants_array=($variants_list)
+        for variant_str in "${vars[@]}"
+        do
+            if [[ $(item_in_array "$variant_str" ${available_variants_list[@]}) == "0" ]]; then
+                available_variants_list+=("$variant_str")
+            fi
+        done
+    done
+}
+
 # mark a given app as having been removed so that it doesn't get reinstalled on updates
 function remove_app {
     app_name=$1