Add ability to use hex hash with caching_sha2_password plugin

lib/puppet/functions/mysql/password.rb

@@ -22,7 +22,8 @@
   def password(password, sensitive = false)
     password = password.unwrap if password.is_a?(Puppet::Pops::Types::PSensitiveType::Sensitive)
 
-    result_string = if %r{^\*[A-F0-9]{40}$}.match?(password)
+    # This magic string is the hex encoded form of `$A$005${SALT}{SHA DIGEST}`, matching MySQL's expected format
+    result_string = if %r{\*[A-F0-9]{40}$}.match?(password) || %r{0x24412430303524[A-F0-9]{63}$}.match?(password)
                       password
                     elsif password.empty?
                       ''

lib/puppet/provider/mysql_user/mysql.rb

@@ -24,6 +24,13 @@ def self.instances
       # rubocop:enable Layout/LineLength
       @max_user_connections, @max_connections_per_hour, @max_queries_per_hour, @max_updates_per_hour, ssl_type, ssl_cipher,
       x509_issuer, x509_subject, @password, @plugin, @authentication_string = mysql_caller(query, 'regular').chomp.split(%r{\t})
+
+      if @plugin == 'caching_sha2_password'
+        # Escaping all single quotes to prevent errors when password generated it
+        @password = @password.gsub("'") { "\\'" }
+        @password = mysql_caller("SELECT CONCAT('0x',HEX('#{@password}'))", 'regular').chomp
+      end
+
       @tls_options = parse_tls_options(ssl_type, ssl_cipher, x509_issuer, x509_subject)
       if (newer_than('mariadb' => '10.1.21') && (@plugin == 'ed25519' || @plugin == 'mysql_native_password')) ||
          (newer_than('mariadb' => '10.2.16') && older_than('mariadb' => '10.2.19')) ||
@@ -77,6 +84,8 @@ def create
     if !plugin.nil?
       if password_hash.nil?
         self.class.mysql_caller("CREATE USER '#{merged_name}' IDENTIFIED WITH '#{plugin}'", 'system')
+      elsif plugin.eql? 'caching_sha2_password'
+        self.class.mysql_caller("CREATE USER '#{merged_name}' IDENTIFIED WITH '#{plugin}' AS X'#{password_hash[2..-1]}'", 'system')
       else
         self.class.mysql_caller("CREATE USER '#{merged_name}' IDENTIFIED WITH '#{plugin}' AS '#{password_hash}'", 'system')
       end
@@ -160,9 +169,16 @@ def password_hash=(string)
       end
       self.class.mysql_caller(sql, 'system')
     elsif !mysqld_version.nil? && newer_than('mysql' => '5.7.6', 'percona' => '5.7.6', 'mariadb' => '10.2.0')
-      raise ArgumentError, _('Only mysql_native_password (*ABCD...XXX) hashes are supported.') unless %r{^\*|^$}.match?(string)
+      raise ArgumentError, _('Only mysql_native_password (*ABCD...XXX) or caching_sha2_password (0x1234ABC...XXX) hashes are supported.') unless
+      %r{^\*|^$}.match?(string) || %r{0x[A-F0-9]+$}.match?(string)
 
-      self.class.mysql_caller("ALTER USER #{merged_name} IDENTIFIED WITH mysql_native_password AS '#{string}'", 'system')
+      sql = "ALTER USER #{merged_name} IDENTIFIED WITH"
+      sql += if plugin == 'caching_sha2_password'
+               " caching_sha2_password AS X'#{string[2..-1]}'"
+             else
+               " mysql_native_password AS '#{string}'"
+             end
+      self.class.mysql_caller(sql, 'system')
     else
       # default ... if mysqld_version does not work
       self.class.mysql_caller("SET PASSWORD FOR #{merged_name} = '#{string}'", 'system')
@@ -225,7 +241,11 @@ def plugin=(string)
       end
     elsif newer_than('mysql' => '5.7.6', 'percona' => '5.7.6', 'mariadb' => '10.2.0')
       sql = "ALTER USER #{merged_name} IDENTIFIED WITH '#{string}'"
-      sql += " AS '#{@resource[:password_hash]}'" if string == 'mysql_native_password'
+      if string == 'mysql_native_password'
+        sql += " AS '#{@resource[:password_hash]}'"
+      elsif string == 'caching_sha2_password'
+        sql += " AS X'#{@resource[:password_hash][2..-1]}'"
+      end
     else
       # See https://bugs.mysql.com/bug.php?id=67449
       sql = "UPDATE mysql.user SET plugin = '#{string}'"

manifests/db.pp

@@ -5,6 +5,7 @@
 #   mysql::db { 'mydb':
 #     user     => 'myuser',
 #     password => 'mypass',
+#     plugin   => 'caching_sha2_password',
 #     host     => 'localhost',
 #     grant    => ['SELECT', 'UPDATE'],
 #   }
@@ -19,6 +20,8 @@
 #   The user for the database you're creating.
 # @param password
 #   The password for $user for the database you're creating.
+# @param plugin
+#   The authentication plugin for $user for the database you're creating. Defaults to 'mysql_native_password'.
 # @param tls_options
 #   The tls_options for $user for the database you're creating.
 # @param dbname
@@ -49,6 +52,7 @@
 define mysql::db (
   String[1]                                      $user,
   Variant[String, Sensitive[String]]             $password,
+  Optional[String[1]]                            $plugin          = undef,
   Optional[Array[String[1]]]                     $tls_options     = undef,
   String                                         $dbname          = $name,
   String[1]                                      $charset         = 'utf8mb3',
@@ -103,6 +107,7 @@
   $user_resource = {
     ensure        => $ensure,
     password_hash => Deferred('mysql::password', [$password]),
+    plugin        => $plugin,
     tls_options   => $tls_options,
   }
   ensure_resource('mysql_user', "${user}@${host}", $user_resource)