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 STATUS == :database_readonly or STATUS == :database_offline
11 @user = User.find(session[:user], :conditions => {:status => ["active", "confirmed", "suspended"]})
13 if @user.status == "suspended"
15 session_expires_automatically
17 redirect_to :controller => "user", :action => "suspended"
20 @user = User.authenticate(:token => session[:token])
21 session[:user] = @user.id
23 rescue Exception => ex
24 logger.info("Exception authorizing user: #{ex.to_s}")
29 redirect_to :controller => 'user', :action => 'login', :referer => request.request_uri unless @user
33 # requires the user to be logged in by the token or HTTP methods, or have an
34 # OAuth token with the right capability. this method is a bit of a pain to call
35 # directly, since it's cumbersome to call filters with arguments in rails. to
36 # make it easier to read and write the code, there are some utility methods
38 def require_capability(cap)
39 # when the current token is nil, it means the user logged in with a different
40 # method, otherwise an OAuth token was used, which has to be checked.
41 unless current_token.nil?
42 unless current_token.read_attribute(cap)
43 render :text => "OAuth token doesn't have that capability.", :status => :forbidden
50 # require the user to have cookies enabled in their browser
52 if request.cookies["_osm_session"].to_s == ""
53 if params[:cookie_test].nil?
54 redirect_to params.merge(:cookie_test => "true")
57 flash.now[:warning] = t 'application.require_cookies.cookies_needed'
62 # Utility methods to make the controller filter methods easier to read and write.
63 def require_allow_read_prefs
64 require_capability(:allow_read_prefs)
66 def require_allow_write_prefs
67 require_capability(:allow_write_prefs)
69 def require_allow_write_diary
70 require_capability(:allow_write_diary)
72 def require_allow_write_api
73 require_capability(:allow_write_api)
75 def require_allow_read_gpx
76 require_capability(:allow_read_gpx)
78 def require_allow_write_gpx
79 require_capability(:allow_write_gpx)
83 # sets up the @user object for use by other methods. this is mostly called
84 # from the authorize method, but can be called elsewhere if authorisation
87 # try and setup using OAuth
89 @user = current_token.user
91 username, passwd = get_auth_data # parse from headers
92 # authenticate per-scheme
94 @user = nil # no authentication provided - perhaps first connect (client should retry after 401)
95 elsif username == 'token'
96 @user = User.authenticate(:token => passwd) # preferred - random token for user from db, passed in basic auth
98 @user = User.authenticate(:username => username, :password => passwd) # basic auth
102 # have we identified the user?
104 # check if the user has been banned
105 if not @user.active_blocks.empty?
106 # NOTE: need slightly more helpful message than this.
107 report_error t('application.setup_user_auth.blocked'), :forbidden
110 # if the user hasn't seen the contributor terms then don't
111 # allow editing - they have to go to the web site and see
112 # (but can decline) the CTs to continue.
113 if REQUIRE_TERMS_SEEN and not @user.terms_seen
115 report_error t('application.setup_user_auth.need_to_see_terms'), :forbidden
120 def authorize(realm='Web Password', errormessage="Couldn't authenticate you")
121 # make the @user object from any auth sources we have
124 # handle authenticate pass/fail
126 # no auth, the user does not exist or the password was wrong
127 response.headers["WWW-Authenticate"] = "Basic realm=\"#{realm}\""
128 render :text => errormessage, :status => :unauthorized
133 def check_database_readable(need_api = false)
134 if STATUS == :database_offline or (need_api and STATUS == :api_offline)
135 redirect_to :controller => 'site', :action => 'offline'
139 def check_database_writable(need_api = false)
140 if STATUS == :database_offline or STATUS == :database_readonly or
141 (need_api and (STATUS == :api_offline or STATUS == :api_readonly))
142 redirect_to :controller => 'site', :action => 'offline'
146 def check_api_readable
147 if STATUS == :database_offline or STATUS == :api_offline
148 report_error "Database offline for maintenance", :service_unavailable
153 def check_api_writable
154 if STATUS == :database_offline or STATUS == :database_readonly or
155 STATUS == :api_offline or STATUS == :api_readonly
156 report_error "Database offline for maintenance", :service_unavailable
161 def require_public_data
162 unless @user.data_public?
163 report_error "You must make your edits public to upload new data", :forbidden
168 # Report and error to the user
169 # (If anyone ever fixes Rails so it can set a http status "reason phrase",
170 # rather than only a status code and having the web engine make up a
171 # phrase from that, we can also put the error message into the status
172 # message. For now, rails won't let us)
173 def report_error(message, status = :bad_request)
174 # Todo: some sort of escaping of problem characters in the message
175 response.headers['Error'] = message
177 if request.headers['X-Error-Format'] and
178 request.headers['X-Error-Format'].downcase == "xml"
179 result = OSM::API.new.get_xml_doc
180 result.root.name = "osmError"
181 result.root << (XML::Node.new("status") << interpret_status(status))
182 result.root << (XML::Node.new("message") << message)
184 render :text => result.to_s, :content_type => "text/xml"
186 render :text => message, :status => status
191 response.header['Vary'] = 'Accept-Language'
194 if !@user.languages.empty?
195 request.user_preferred_languages = @user.languages
196 response.header['Vary'] = '*'
197 elsif !request.user_preferred_languages.empty?
198 @user.languages = request.user_preferred_languages
203 if request.compatible_language_from(I18n.available_locales).nil?
204 request.user_preferred_languages = request.user_preferred_languages.collect do |pl|
207 while pl.match(/^(.*)-[^-]+$/)
208 pls.push($1) if I18n.available_locales.include?($1.to_sym)
215 if @user and not request.compatible_language_from(I18n.available_locales).nil?
216 @user.languages = request.user_preferred_languages
221 I18n.locale = request.compatible_language_from(I18n.available_locales)
223 response.headers['Content-Language'] = I18n.locale.to_s
226 def api_call_handle_error
229 rescue ActiveRecord::RecordNotFound => ex
230 render :nothing => true, :status => :not_found
231 rescue LibXML::XML::Error, ArgumentError => ex
232 report_error ex.message, :bad_request
233 rescue ActiveRecord::RecordInvalid => ex
234 message = "#{ex.record.class} #{ex.record.id}: "
235 ex.record.errors.each { |attr,msg| message << "#{attr}: #{msg} (#{ex.record[attr].inspect})" }
236 report_error message, :bad_request
237 rescue OSM::APIError => ex
238 report_error ex.message, ex.status
239 rescue ActionController::UnknownAction => ex
241 rescue Exception => ex
242 logger.info("API threw unexpected #{ex.class} exception: #{ex.message}")
243 ex.backtrace.each { |l| logger.info(l) }
244 report_error "#{ex.class}: #{ex.message}", :internal_server_error
249 # asserts that the request method is the +method+ given as a parameter
250 # or raises a suitable error. +method+ should be a symbol, e.g: :put or :get.
251 def assert_method(method)
252 ok = request.send((method.to_s.downcase + "?").to_sym)
253 raise OSM::APIBadMethodError.new(method) unless ok
257 # wrap an api call in a timeout
259 SystemTimer.timeout_after(API_TIMEOUT) do
262 rescue Timeout::Error
263 raise OSM::APITimeoutError
267 # wrap a web page in a timeout
269 SystemTimer.timeout_after(WEB_TIMEOUT) do
272 rescue ActionView::TemplateError => ex
273 if ex.original_exception.is_a?(Timeout::Error)
274 render :action => "timeout"
278 rescue Timeout::Error
279 render :action => "timeout"
283 # extend caches_action to include the parameters, locale and logged in
284 # status in all cache keys
285 def self.caches_action(*actions)
286 options = actions.extract_options!
287 cache_path = options[:cache_path] || Hash.new
289 options[:unless] = case options[:unless]
290 when NilClass then Array.new
291 when Array then options[:unless]
292 else unlessp = [ options[:unless] ]
295 options[:unless].push(Proc.new do |controller|
296 controller.params.include?(:page)
299 options[:cache_path] = Proc.new do |controller|
300 cache_path.merge(controller.params).merge(:locale => I18n.locale)
303 actions.push(options)
309 # extend expire_action to expire all variants
310 def expire_action(options = {})
311 I18n.available_locales.each do |locale|
312 super options.merge(:locale => locale)
317 # is the requestor logged in?
324 # extract authorisation credentials from headers, returns user = nil if none
326 if request.env.has_key? 'X-HTTP_AUTHORIZATION' # where mod_rewrite might have put it
327 authdata = request.env['X-HTTP_AUTHORIZATION'].to_s.split
328 elsif request.env.has_key? 'REDIRECT_X_HTTP_AUTHORIZATION' # mod_fcgi
329 authdata = request.env['REDIRECT_X_HTTP_AUTHORIZATION'].to_s.split
330 elsif request.env.has_key? 'HTTP_AUTHORIZATION' # regular location
331 authdata = request.env['HTTP_AUTHORIZATION'].to_s.split
333 # only basic authentication supported
334 if authdata and authdata[0] == 'Basic'
335 user, pass = Base64.decode64(authdata[1]).split(':',2)