[CC-1227] Capability to provide environment variables from dashboard

cookbooks/env_vars/libraries/helpers.rb

@@ -16,10 +16,19 @@ def fetch_environment_variables(app_data)
       return [] unless metadata && metadata['environment_variables']
 
       variables = metadata['environment_variables'].map do |var_hash|
-        { :name => var_hash['name'], :value => ::Base64.strict_decode64(var_hash['value']) }
+        if variable_validator(var_hash[:name])
+          { :name => var_hash['name'], :value => escape_variable_value(::Base64.strict_decode64(var_hash['value'])).delete!("\n") }
+        else
+          Chef::Log.error('[COOKBOOK ENV_VARS] Variable name is not valid')
+        end
       end
     end
 
+    # Function for variable name validation
+    def variable_validator(name)
+        !!name.match(/\A[a-zA-Z]\w*\z/)
+    end
+
     # Escapes the value of variable to be correctly enclosed in double quotes. Enclosing characters
     # in double quotes (") preserves the literal value of all characters within the quotes, with the
     # exception of $, `, \, and, when history expansion is enabled, !.

cookbooks/env_vars/templates/default/env.cloud.erb

@@ -1,3 +1,3 @@
-<% @environment_variables.each do |variable| %>
-export <%= variable[:name] %>="<%= escape_variable_value(variable[:value]) %>"
-<% end %>
+<% @environment_variables.each do |variable| -%>
+export <%=variable[:name]%>="<%= variable[:value] %>"
+<% end -%>