if no password given, generate one and return it in an extra field. f…

…ixes #772

kong/plugins/basic-auth/daos.lua

@@ -1,5 +1,6 @@
 local BaseDao = require "kong.dao.cassandra.base_dao"
 local crypto = require "kong.plugins.basic-auth.crypto"
+local utils = require "kong.tools.utils" 
 
 local function encrypt_password(password, credential)
   credential.password = crypto.encrypt(credential)
@@ -26,4 +27,20 @@ function BasicAuthCredentials:new(properties)
   BasicAuthCredentials.super.new(self, properties)
 end
 
+function BasicAuthCredentials:insert(params)
+  if params.password then
+    return BasicAuthCredentials.super.insert(self, params)
+  else
+    -- No password was provided, so we insert a random generated password
+    local newpwd = utils.random_string()
+    params.password = newpwd
+    local data, err = BasicAuthCredentials.super.insert(self, params)
+    -- inserting the data has encrypted the password field by now, 
+    -- so add a new field with the generated plain text password
+    -- which will be returned to the requester
+    data.plain_password = newpwd
+    return data, err
+  end
+end
+
 return {basicauth_credentials = BasicAuthCredentials}