Class: AuthenticationManager

Inherits:
Object
  • Object
show all
Defined in:
backend/app/model/authentication_manager.rb

Class Method Summary collapse

Class Method Details

.authenticate(username, password) ⇒ Object

Attempt to authenticate user' with the provided password’. Return a User object if successful, nil otherwise



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# File 'backend/app/model/authentication_manager.rb', line 19

def self.authenticate(username, password)
  authentication_sources.each do |source|
    begin
      user = User.find(:username => username)

      # System users are only authenticated locally.
      next if (user && user.is_system_user == 1 && source != DBAuth)

      #ANW-97: check if user is inactive
      next if (user && user.is_active_user != 1)

      # If configured prevent authentication attempts for existing users via a
      # different source. Use case: don't allow an LDAP user to authenticate via
      # the database because they had a password set at some point
      if AppConfig[:authentication_restricted_by_source] && user && user.source != 'local'
        if user.source != source.name
          Log.warn("Restricted source for #{user.username} [#{user.source}]: #{source.name}")
          next
        end
      end

      jsonmodel_user = source.authenticate(username, password)

      if !jsonmodel_user
        next
      end

      # Force their admin status based on what they already had
      jsonmodel_user.is_admin = (user && user.can?(:administer_system))

      if user
        begin
          user.update_from_json(jsonmodel_user,
                                :source => source.name,
                                :lock_version => user.lock_version)
        rescue Sequel::NoExistingObject => e
          # We'll swallow these because they only really mean that the user
          # logged in twice simultaneously.  As long as one of the updates
          # succeeded it doesn't really matter.
          user = User.find(:username => username)
        end
      else
        DB.attempt {
          user = User.create_from_json(jsonmodel_user, :source => source.name)
        }.and_if_constraint_fails {
          return authenticate(username, password)
        }
      end

      return user
    rescue
      Log.error("Error communicating with authentication source #{source.inspect}: #{$!}")
      Log.exception($!)
      next
    end
  end

  nil
end

.authenticate_token(username, token) ⇒ Object 



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# File 'backend/app/model/authentication_manager.rb', line 87

def self.authenticate_token(username, token)
  authentication_sources.each do |source|
    next unless source == DBAuth
    if (user = source.authenticate_token(username, token))
      return user
    end
  end
  nil
end

.authentication_sources ⇒ Object 



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# File 'backend/app/model/authentication_manager.rb', line 12

def self.authentication_sources
  prepare_sources(AppConfig[:authentication_sources]) + [DBAuth]
end

.generate_token(username) ⇒ Object 



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# File 'backend/app/model/authentication_manager.rb', line 98

def self.generate_token(username)
  authentication_sources.each do |source|
    next unless source == DBAuth
    if (token = source.generate_token(username))
      return token
    end
  end
  nil
end

.matching_usernames(query) ⇒ Object 



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# File 'backend/app/model/authentication_manager.rb', line 80

def self.matching_usernames(query)
  authentication_sources.map {|source|
    source.matching_usernames(query)
  }.flatten(1).sort.uniq
end

.prepare_sources(sources) ⇒ Object 



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# File 'backend/app/model/authentication_manager.rb', line 5

def self.prepare_sources(sources)
  sources.map { |source|
    model = Kernel.const_get(source[:model].intern)
    model.new(source)
  }
end