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 # requires the user to be logged in by the token or HTTP methods, or have an
27 # OAuth token with the right capability. this method is a bit of a pain to call
28 # directly, since it's cumbersome to call filters with arguments in rails. to
29 # make it easier to read and write the code, there are some utility methods
31 def require_capability(cap)
32 # when the current token is nil, it means the user logged in with a different
33 # method, otherwise an OAuth token was used, which has to be checked.
34 unless current_token.nil?
35 unless current_token.read_attribute(cap)
36 render :text => "OAuth token doesn't have that capability.", :status => :forbidden
43 # require the user to have cookies enabled in their browser
45 if request.cookies["_osm_session"].to_s == ""
46 if params[:cookie_test].nil?
47 redirect_to params.merge(:cookie_test => "true")
50 @notice = t 'application.require_cookies.cookies_needed'
55 # Utility methods to make the controller filter methods easier to read and write.
56 def require_allow_read_prefs
57 require_capability(:allow_read_prefs)
59 def require_allow_write_prefs
60 require_capability(:allow_write_prefs)
62 def require_allow_write_diary
63 require_capability(:allow_write_diary)
65 def require_allow_write_api
66 require_capability(:allow_write_api)
68 def require_allow_read_gpx
69 require_capability(:allow_read_gpx)
71 def require_allow_write_gpx
72 require_capability(:allow_write_gpx)
76 # sets up the @user object for use by other methods. this is mostly called
77 # from the authorize method, but can be called elsewhere if authorisation
80 # try and setup using OAuth
82 @user = current_token.user
84 username, passwd = get_auth_data # parse from headers
85 # authenticate per-scheme
87 @user = nil # no authentication provided - perhaps first connect (client should retry after 401)
88 elsif username == 'token'
89 @user = User.authenticate(:token => passwd) # preferred - random token for user from db, passed in basic auth
91 @user = User.authenticate(:username => username, :password => passwd) # basic auth
95 # check if the user has been banned
96 unless @user.nil? or @user.active_blocks.empty?
97 # NOTE: need slightly more helpful message than this.
98 render :text => t('application.setup_user_auth.blocked'), :status => :forbidden
102 def authorize(realm='Web Password', errormessage="Couldn't authenticate you")
103 # make the @user object from any auth sources we have
106 # handle authenticate pass/fail
108 # no auth, the user does not exist or the password was wrong
109 response.headers["WWW-Authenticate"] = "Basic realm=\"#{realm}\""
110 render :text => errormessage, :status => :unauthorized
115 def check_database_readable(need_api = false)
116 if OSM_STATUS == :database_offline or (need_api and OSM_STATUS == :api_offline)
117 redirect_to :controller => 'site', :action => 'offline'
121 def check_database_writable(need_api = false)
122 if OSM_STATUS == :database_offline or OSM_STATUS == :database_readonly or
123 (need_api and (OSM_STATUS == :api_offline or OSM_STATUS == :api_readonly))
124 redirect_to :controller => 'site', :action => 'offline'
128 def check_api_readable
129 if OSM_STATUS == :database_offline or OSM_STATUS == :api_offline
130 response.headers['Error'] = "Database offline for maintenance"
131 render :nothing => true, :status => :service_unavailable
136 def check_api_writable
137 if OSM_STATUS == :database_offline or OSM_STATUS == :database_readonly or
138 OSM_STATUS == :api_offline or OSM_STATUS == :api_readonly
139 response.headers['Error'] = "Database offline for maintenance"
140 render :nothing => true, :status => :service_unavailable
145 def require_public_data
146 unless @user.data_public?
147 response.headers['Error'] = "You must make your edits public to upload new data"
148 render :nothing => true, :status => :forbidden
153 # Report and error to the user
154 # (If anyone ever fixes Rails so it can set a http status "reason phrase",
155 # rather than only a status code and having the web engine make up a
156 # phrase from that, we can also put the error message into the status
157 # message. For now, rails won't let us)
158 def report_error(message, status = :bad_request)
159 # Todo: some sort of escaping of problem characters in the message
160 response.headers['Error'] = message
161 render :text => message, :status => status
165 response.header['Vary'] = 'Accept-Language'
168 if !@user.languages.empty?
169 request.user_preferred_languages = @user.languages
170 response.header['Vary'] = '*'
171 elsif !request.user_preferred_languages.empty?
172 @user.languages = request.user_preferred_languages
177 I18n.locale = request.compatible_language_from(I18n.available_locales)
179 response.headers['Content-Language'] = I18n.locale.to_s
182 def api_call_handle_error
185 rescue ActiveRecord::RecordNotFound => ex
186 render :nothing => true, :status => :not_found
187 rescue LibXML::XML::Error, ArgumentError => ex
188 report_error ex.message, :bad_request
189 rescue ActiveRecord::RecordInvalid => ex
190 message = "#{ex.record.class} #{ex.record.id}: "
191 ex.record.errors.each { |attr,msg| message << "#{attr}: #{msg} (#{ex.record[attr].inspect})" }
192 report_error message, :bad_request
193 rescue OSM::APIError => ex
194 report_error ex.message, ex.status
195 rescue Exception => ex
196 logger.info("API threw unexpected #{ex.class} exception: #{ex.message}")
197 ex.backtrace.each { |l| logger.info(l) }
198 report_error "#{ex.class}: #{ex.message}", :internal_server_error
203 # asserts that the request method is the +method+ given as a parameter
204 # or raises a suitable error. +method+ should be a symbol, e.g: :put or :get.
205 def assert_method(method)
206 ok = request.send((method.to_s.downcase + "?").to_sym)
207 raise OSM::APIBadMethodError.new(method) unless ok
211 Timeout::timeout(APP_CONFIG['api_timeout'], OSM::APITimeoutError) do
217 # extract authorisation credentials from headers, returns user = nil if none
219 if request.env.has_key? 'X-HTTP_AUTHORIZATION' # where mod_rewrite might have put it
220 authdata = request.env['X-HTTP_AUTHORIZATION'].to_s.split
221 elsif request.env.has_key? 'REDIRECT_X_HTTP_AUTHORIZATION' # mod_fcgi
222 authdata = request.env['REDIRECT_X_HTTP_AUTHORIZATION'].to_s.split
223 elsif request.env.has_key? 'HTTP_AUTHORIZATION' # regular location
224 authdata = request.env['HTTP_AUTHORIZATION'].to_s.split
226 # only basic authentication supported
227 if authdata and authdata[0] == 'Basic'
228 user, pass = Base64.decode64(authdata[1]).split(':',2)