1 # Filters added to this controller will be run for all controllers in the application.
2 # Likewise, all the methods added will be available for all controllers.
3 class ApplicationController < ActionController::Base
5 if OSM_STATUS == :database_readonly or OSM_STATUS == :database_offline
11 @user = User.find(session[:user], :conditions => {:visible => true})
13 @user = User.authenticate(:token => session[:token])
14 session[:user] = @user.id
16 rescue Exception => ex
17 logger.info("Exception authorizing user: #{ex.to_s}")
22 redirect_to :controller => 'user', :action => 'login', :referer => request.request_uri unless @user
26 # sets up the @user object for use by other methods. this is mostly called
27 # from the authorize method, but can be called elsewhere if authorisation
30 username, passwd = get_auth_data # parse from headers
31 # authenticate per-scheme
33 @user = nil # no authentication provided - perhaps first connect (client should retry after 401)
34 elsif username == 'token'
35 @user = User.authenticate(:token => passwd) # preferred - random token for user from db, passed in basic auth
37 @user = User.authenticate(:username => username, :password => passwd) # basic auth
41 def authorize(realm='Web Password', errormessage="Couldn't authenticate you")
42 # make the @user object from any auth sources we have
45 # handle authenticate pass/fail
47 # no auth, the user does not exist or the password was wrong
48 response.headers["WWW-Authenticate"] = "Basic realm=\"#{realm}\""
49 render :text => errormessage, :status => :unauthorized
54 def check_database_readable(need_api = false)
55 if OSM_STATUS == :database_offline or (need_api and OSM_STATUS == :api_offline)
56 redirect_to :controller => 'site', :action => 'offline'
60 def check_database_writable(need_api = false)
61 if OSM_STATUS == :database_offline or OSM_STATUS == :database_readonly or
62 (need_api and (OSM_STATUS == :api_offline or OSM_STATUS == :api_readonly))
63 redirect_to :controller => 'site', :action => 'offline'
67 def check_api_readable
68 if OSM_STATUS == :database_offline or OSM_STATUS == :api_offline
69 response.headers['Error'] = "Database offline for maintenance"
70 render :nothing => true, :status => :service_unavailable
75 def check_api_writable
76 if OSM_STATUS == :database_offline or OSM_STATUS == :database_readonly or
77 OSM_STATUS == :api_offline or OSM_STATUS == :api_readonly
78 response.headers['Error'] = "Database offline for maintenance"
79 render :nothing => true, :status => :service_unavailable
84 def require_public_data
85 unless @user.data_public?
86 response.headers['Error'] = "You must make your edits public to upload new data"
87 render :nothing => true, :status => :forbidden
92 # Report and error to the user
93 # (If anyone ever fixes Rails so it can set a http status "reason phrase",
94 # rather than only a status code and having the web engine make up a
95 # phrase from that, we can also put the error message into the status
96 # message. For now, rails won't let us)
97 def report_error(message, status = :bad_request)
98 # Todo: some sort of escaping of problem characters in the message
99 response.headers['Error'] = message
100 render :text => message, :status => status
104 response.header['Vary'] = 'Accept-Language'
107 if !@user.languages.empty?
108 request.user_preferred_languages = @user.languages
109 response.header['Vary'] = '*'
110 elsif !request.user_preferred_languages.empty?
111 @user.languages = request.user_preferred_languages
116 I18n.locale = request.compatible_language_from(I18n.available_locales)
118 response.headers['Content-Language'] = I18n.locale.to_s
121 def api_call_handle_error
124 rescue ActiveRecord::RecordNotFound => ex
125 render :nothing => true, :status => :not_found
126 rescue LibXML::XML::Error, ArgumentError => ex
127 report_error ex.message, :bad_request
128 rescue ActiveRecord::RecordInvalid => ex
129 message = "#{ex.record.class} #{ex.record.id}: "
130 ex.record.errors.each { |attr,msg| message << "#{attr}: #{msg} (#{ex.record[attr].inspect})" }
131 report_error message, :bad_request
132 rescue OSM::APIError => ex
133 report_error ex.message, ex.status
134 rescue Exception => ex
135 logger.info("API threw unexpected #{ex.class} exception: #{ex.message}")
136 ex.backtrace.each { |l| logger.info(l) }
137 report_error "#{ex.class}: #{ex.message}", :internal_server_error
142 # asserts that the request method is the +method+ given as a parameter
143 # or raises a suitable error. +method+ should be a symbol, e.g: :put or :get.
144 def assert_method(method)
145 ok = request.send((method.to_s.downcase + "?").to_sym)
146 raise OSM::APIBadMethodError.new(method) unless ok
150 Timeout::timeout(APP_CONFIG['api_timeout'], OSM::APITimeoutError) do
156 # extract authorisation credentials from headers, returns user = nil if none
158 if request.env.has_key? 'X-HTTP_AUTHORIZATION' # where mod_rewrite might have put it
159 authdata = request.env['X-HTTP_AUTHORIZATION'].to_s.split
160 elsif request.env.has_key? 'REDIRECT_X_HTTP_AUTHORIZATION' # mod_fcgi
161 authdata = request.env['REDIRECT_X_HTTP_AUTHORIZATION'].to_s.split
162 elsif request.env.has_key? 'HTTP_AUTHORIZATION' # regular location
163 authdata = request.env['HTTP_AUTHORIZATION'].to_s.split
165 # only basic authentication supported
166 if authdata and authdata[0] == 'Basic'
167 user, pass = Base64.decode64(authdata[1]).split(':',2)