# File lib/casserver/authenticators/sql_authlogic.rb, line 48
48:   def validate(credentials)
49:     read_standard_credentials(credentials)
50:     raise_if_not_configured
51: 
52:     user_model = self.class.user_model
53: 
54:     username_column = @options[:username_column] || "login"
55:     password_column = @options[:password_column] || "crypted_password"
56:     salt_column     = @options[:salt_column]
57: 
58:     $LOG.debug "#{self.class}: [#{user_model}] " + "Connection pool size: #{user_model.connection_pool.instance_variable_get(:@checked_out).length}/#{user_model.connection_pool.instance_variable_get(:@connections).length}"
59:     results = user_model.find(:all, :conditions => ["#{username_column} = ?", @username])
60:     user_model.connection_pool.checkin(user_model.connection)
61: 
62:     begin
63:       encryptor = eval("Authlogic::CryptoProviders::" + @options[:encryptor] || "Sha512")
64:     rescue
65:       $LOG.warn("Could not initialize Authlogic crypto class for '#{@options[:encryptor]}'")
66:       encryptor = Authlogic::CryptoProviders::Sha512
67:     end
68: 
69:     @options[:encryptor_options].each do |name, value|
70:       encryptor.send("#{name}=", value) if encryptor.respond_to?("#{name}=")
71:     end
72: 
73:     if results.size > 0
74:       $LOG.warn("Multiple matches found for user '#{@username}'") if results.size > 1
75:       user = results.first
76:       tokens = [@password, (not salt_column.nil?) && user.send(salt_column) || nil].compact
77:       crypted = user.send(password_column)
78: 
79:       unless @options[:extra_attributes].blank?
80:         if results.size > 1
81:           $LOG.warn("#{self.class}: Unable to extract extra_attributes because multiple matches were found for #{@username.inspect}")
82:         else
83:           extract_extra(user)
84:           log_extra
85:         end
86:       end
87: 
88:       return encryptor.matches?(crypted, tokens)
89:     else
90:       return false
91:     end
92:   end