Fix some XSS issues

[rails.git] / app / controllers / user_controller.rb

diff --git a/app/controllers/user_controller.rb b/app/controllers/user_controller.rb
index 839c94e3aa4521d12f99db54816ba4924f28e450..9c5ac0d09edf8bf400c196cb14b3ec3d54096082 100644 (file)
--- a/app/controllers/user_controller.rb
+++ b/app/controllers/user_controller.rb
@@ -1,6 +1,7 @@
 class UserController < ApplicationController
 class UserController < ApplicationController

-  layout 'site', :except => :api_details
+  layout :choose_layout

 
 

+  before_filter :disable_terms_redirect, :only => [:terms, :save, :logout, :api_details]

   before_filter :authorize, :only => [:api_details, :api_gpx_files]
   before_filter :authorize_web, :except => [:api_details, :api_gpx_files]
   before_filter :set_locale, :except => [:api_details, :api_gpx_files]
   before_filter :authorize, :only => [:api_details, :api_gpx_files]
   before_filter :authorize_web, :except => [:api_details, :api_gpx_files]
   before_filter :set_locale, :except => [:api_details, :api_gpx_files]


@@ -11,18 +12,109 @@ class UserController < ApplicationController
   before_filter :require_allow_read_prefs, :only => [:api_details]
   before_filter :require_allow_read_gpx, :only => [:api_gpx_files]
   before_filter :require_cookies, :only => [:login, :confirm]
   before_filter :require_allow_read_prefs, :only => [:api_details]
   before_filter :require_allow_read_gpx, :only => [:api_gpx_files]
   before_filter :require_cookies, :only => [:login, :confirm]

-  before_filter :require_administrator, :only => [:activate, :deactivate, :confirm, :hide, :unhide, :delete]
-  before_filter :lookup_this_user, :only => [:activate, :deactivate, :confirm, :hide, :unhide, :delete]
+  before_filter :require_administrator, :only => [:set_status, :delete, :list]
+  before_filter :lookup_this_user, :only => [:set_status, :delete]

 
   filter_parameter_logging :password, :pass_crypt, :pass_crypt_confirmation
 
 
   filter_parameter_logging :password, :pass_crypt, :pass_crypt_confirmation
 

-  cache_sweeper :user_sweeper, :only => [:account, :hide, :unhide, :delete]
+  cache_sweeper :user_sweeper, :only => [:account, :set_status, :delete]
+
+  def terms
+    @legale = params[:legale] || OSM.IPToCountry(request.remote_ip) || DEFAULT_LEGALE
+    @text = OSM.legal_text_for_country(@legale)
+
+    if request.xhr?
+      render :update do |page|
+        page.replace_html "contributorTerms", :partial => "terms"
+      end
+    elsif using_open_id?
+      # The redirect from the OpenID provider reenters here
+      # again and we need to pass the parameters through to
+      # the open_id_authentication function
+      @user = session.delete(:new_user)
+
+      openid_verify(nil, @user) do |user|
+      end
+
+      if @user.openid_url.nil? or @user.invalid?
+        render :action => 'new'
+      else
+        render :action => 'terms'
+      end
+    else
+      session[:referer] = params[:referer]
+
+      @title = t 'user.terms.title'
+      @user = User.new(params[:user]) if params[:user]
+
+      if params[:user] and params[:user][:openid_url] and @user.pass_crypt.empty?
+        # We are creating an account with OpenID and no password
+        # was specified so create a random one
+        @user.pass_crypt = ActiveSupport::SecureRandom.base64(16) 
+        @user.pass_crypt_confirmation = @user.pass_crypt 
+      end
+
+      if @user
+        if @user.invalid?
+          if @user.new_record?
+            # Something is wrong with a new user, so rerender the form
+            render :action => :new
+          else
+            # Error in existing user, so go to account settings
+            flash[:errors] = @user.errors
+            redirect_to :action => :account, :display_name => @user.display_name
+          end
+        elsif @user.terms_agreed?
+          # Already agreed to terms, so just show settings
+          redirect_to :action => :account, :display_name => @user.display_name
+        elsif params[:user] and params[:user][:openid_url] and not params[:user][:openid_url].empty?
+          # Verify OpenID before moving on
+          session[:new_user] = @user
+          openid_verify(params[:user][:openid_url], @user)
+        end
+      else
+        # Not logged in, so redirect to the login page
+        redirect_to :action => :login, :referer => request.request_uri
+      end
+    end
+  end

 
   def save
     @title = t 'user.new.title'
 
     if Acl.find_by_address(request.remote_ip, :conditions => {:k => "no_account_creation"})
       render :action => 'new'
 
   def save
     @title = t 'user.new.title'
 
     if Acl.find_by_address(request.remote_ip, :conditions => {:k => "no_account_creation"})
       render :action => 'new'

+    elsif params[:decline]
+      if @user
+        @user.terms_seen = true
+
+        if @user.save
+          flash[:notice] = t 'user.new.terms declined', :url => t('user.new.terms declined url')
+        end
+
+        if params[:referer]
+          redirect_to params[:referer]
+        else
+          redirect_to :action => :account, :display_name => @user.display_name
+        end
+      else
+        redirect_to t('user.terms.declined')
+      end
+    elsif @user
+      if !@user.terms_agreed?
+        @user.consider_pd = params[:user][:consider_pd]
+        @user.terms_agreed = Time.now.getutc
+        @user.terms_seen = true
+        if @user.save
+          flash[:notice] = t 'user.new.terms accepted'
+        end
+      end
+
+      if params[:referer]
+        redirect_to params[:referer]
+      else
+        redirect_to :action => :account, :display_name => @user.display_name
+      end

     else
       @user = User.new(params[:user])
 
     else
       @user = User.new(params[:user])
 


@@ -31,13 +123,18 @@ class UserController < ApplicationController
       @user.description = "" if @user.description.nil?
       @user.creation_ip = request.remote_ip
       @user.languages = request.user_preferred_languages
       @user.description = "" if @user.description.nil?
       @user.creation_ip = request.remote_ip
       @user.languages = request.user_preferred_languages

-
+      @user.terms_agreed = Time.now.getutc
+      @user.terms_seen = true
+      @user.openid_url = nil if @user.openid_url and @user.openid_url.empty?
+      

       if @user.save
       if @user.save

-        flash[:notice] = t 'user.new.flash create success message'
-        Notifier.deliver_signup_confirm(@user, @user.tokens.create(:referer => params[:referer]))
-        redirect_to :action => 'login'
+        flash[:piwik_goal] = PIWIK_SIGNUP_GOAL if defined?(PIWIK_SIGNUP_GOAL)
+        flash[:notice] = t 'user.new.flash create success message', :email => @user.email
+        Notifier.deliver_signup_confirm(@user, @user.tokens.create(:referer => session.delete(:referer)))
+        session[:token] = @user.tokens.create.token
+        redirect_to :action => 'login', :referer => params[:referer]

       else
       else

-        render :action => 'new'
+        render :action => 'new', :referer => params[:referer]

       end
     end
   end
       end
     end
   end


@@ -66,25 +163,36 @@ class UserController < ApplicationController
       @user.home_lat = params[:user][:home_lat]
       @user.home_lon = params[:user][:home_lon]
 
       @user.home_lat = params[:user][:home_lat]
       @user.home_lon = params[:user][:home_lon]
 

-      if @user.save
-        set_locale
+      if params[:user][:preferred_editor] == "default"
+        @user.preferred_editor = nil
+      else
+        @user.preferred_editor = params[:user][:preferred_editor]
+      end

 
 

-        if @user.new_email.nil? or @user.new_email.empty?
-          flash.now[:notice] = t 'user.account.flash update success'
-        else
-          flash.now[:notice] = t 'user.account.flash update success confirm needed'
+      @user.openid_url = nil if params[:user][:openid_url].empty?

 
 

-          begin
-            Notifier.deliver_email_confirm(@user, @user.tokens.create)
-          rescue
-            # Ignore errors sending email
-          end
-        end
+      if params[:user][:openid_url].length > 0 and
+         params[:user][:openid_url] != @user.openid_url
+        # If the OpenID has changed, we want to check that it is a
+        # valid OpenID and one the user has control over before saving
+        # it as a password equivalent for the user.
+        session[:new_user] = @user
+        openid_verify(params[:user][:openid_url], @user)
+      else
+        update_user(@user)
+      end
+    elsif using_open_id?
+      # The redirect from the OpenID provider reenters here
+      # again and we need to pass the parameters through to
+      # the open_id_authentication function
+      @user = session.delete(:new_user)
+      openid_verify(nil, @user) do |user|
+        update_user(user)

       end
     else
       if flash[:errors]
         flash[:errors].each do |attr,msg|
       end
     else
       if flash[:errors]
         flash[:errors].each do |attr,msg|

-          attr = "new_email" if attr == "email"
+          attr = "new_email" if attr == "email" and !@user.new_email.nil?

           @user.errors.add(attr,msg)
         end
       end
           @user.errors.add(attr,msg)
         end
       end


@@ -127,7 +235,7 @@ class UserController < ApplicationController
         if params[:user]
           @user.pass_crypt = params[:user][:pass_crypt]
           @user.pass_crypt_confirmation = params[:user][:pass_crypt_confirmation]
         if params[:user]
           @user.pass_crypt = params[:user][:pass_crypt]
           @user.pass_crypt_confirmation = params[:user][:pass_crypt_confirmation]

-          @user.status = "active"
+          @user.status = "active" if @user.status == "pending"

           @user.email_valid = true
 
           if @user.save
           @user.email_valid = true
 
           if @user.save


@@ -145,39 +253,29 @@ class UserController < ApplicationController
 
   def new
     @title = t 'user.new.title'
 
   def new
     @title = t 'user.new.title'

-
-    # The user is logged in already, so don't show them the signup
-    # page, instead send them to the home page
-    redirect_to :controller => 'site', :action => 'index' if session[:user]
+    @referer = params[:referer] || session[:referer]
+
+    if session[:user]
+      # The user is logged in already, so don't show them the signup
+      # page, instead send them to the home page
+      redirect_to :controller => 'site', :action => 'index'
+    elsif not params['openid'].nil?
+      flash.now[:notice] = t 'user.new.openid association'
+    end

   end
 
   def login
   end
 
   def login

-    @title = t 'user.login.title'
-
-    if params[:user]
-      email_or_display_name = params[:user][:email]
-      pass = params[:user][:password]
-      user = User.authenticate(:username => email_or_display_name, :password => pass)
+    if params[:username] or using_open_id?
+      session[:remember_me] ||= params[:remember_me]
+      session[:referer] ||= params[:referer]

 
 

-      if user
-        session[:user] = user.id
-        session_expires_after 1.month if params[:remember_me]
-
-        # The user is logged in, if the referer param exists, redirect
-        # them to that unless they've also got a block on them, in
-        # which case redirect them to the block so they can clear it.
-        if user.blocked_on_view
-          redirect_to user.blocked_on_view, :referrer => params[:referrer]
-        elsif params[:referer]
-          redirect_to params[:referer]
-        else
-          redirect_to :controller => 'site', :action => 'index'
-        end
-       elsif User.authenticate(:username => email_or_display_name, :password => pass, :inactive => true)
-        flash.now[:error] = t 'user.login.account not active'
+      if using_open_id?
+        openid_authentication(params[:openid_url])

       else
       else

-        flash.now[:error] = t 'user.login.auth failure'
+        password_authentication(params[:username], params[:password])

       end
       end

+    elsif flash[:notice].nil?
+      flash.now[:notice] =  t 'user.login.notice'

     end
   end
 
     end
   end
 


@@ -190,9 +288,9 @@ class UserController < ApplicationController
         if token
           token.destroy
         end
         if token
           token.destroy
         end

-        session[:token] = nil
+        session.delete(:token)

       end
       end

-      session[:user] = nil
+      session.delete(:user)

       session_expires_automatically
       if params[:referer]
         redirect_to params[:referer]
       session_expires_automatically
       if params[:referer]
         redirect_to params[:referer]


@@ -203,30 +301,72 @@ class UserController < ApplicationController
   end
 
   def confirm
   end
 
   def confirm

-    if params[:confirm_action]
-      token = UserToken.find_by_token(params[:confirm_string])
-      if token and !token.user.active?
-        @user = token.user
-        @user.status = "active"
-        @user.email_valid = true
-        @user.save!
-        referer = token.referer
-        token.destroy
-        flash[:notice] = t 'user.confirm.success'
-        session[:user] = @user.id
-        unless referer.nil?
-          redirect_to referer
+    if request.post?
+      if token = UserToken.find_by_token(params[:confirm_string])
+        if token.user.active?
+          flash[:error] = t('user.confirm.already active')
+          redirect_to :action => 'login'

         else
         else

-          redirect_to :action => 'account', :display_name => @user.display_name
+          user = token.user
+          user.status = "active"
+          user.email_valid = true
+          user.save!
+          referer = token.referer
+          token.destroy
+
+          if session[:token] 
+            token = UserToken.find_by_token(session[:token])
+            session.delete(:token)
+          else
+            token = nil
+          end
+
+          if token.nil? or token.user != user
+            flash[:notice] = t('user.confirm.success')
+            redirect_to :action => :login, :referer => referer
+          else
+            token.destroy
+
+            session[:user] = user.id
+
+            if referer.nil?
+              flash[:notice] = t('user.confirm.success') + "<br /><br />" + t('user.confirm.before you start')
+              redirect_to :action => :account, :display_name => user.display_name
+            else
+              flash[:notice] = t('user.confirm.success')
+              redirect_to referer
+            end
+          end

         end
       else
         end
       else

-        flash.now[:error] = t 'user.confirm.failure'
+        user = User.find_by_display_name(params[:display_name])
+
+        if user and user.active?
+          flash[:error] = t('user.confirm.already active')
+        elsif user
+          flash[:error] = t('user.confirm.unknown token') + t('user.confirm.reconfirm', :reconfirm => url_for(:action => 'confirm_resend', :display_name => params[:display_name]))
+        else
+          flash[:error] = t('user.confirm.unknown token')
+        end
+
+        redirect_to :action => 'login'

       end
     end
   end
 
       end
     end
   end
 

+  def confirm_resend
+    if user = User.find_by_display_name(params[:display_name])
+      Notifier.deliver_signup_confirm(user, user.tokens.create)
+      flash[:notice] = t 'user.confirm_resend.success', :email => user.email
+    else
+      flash[:notice] = t 'user.confirm_resend.failure', :name => params[:display_name]
+    end
+
+    redirect_to :action => 'login'
+  end
+

   def confirm_email
   def confirm_email

-    if params[:confirm_action]
+    if request.post?

       token = UserToken.find_by_token(params[:confirm_string])
       if token and token.user.new_email?
         @user = token.user
       token = UserToken.find_by_token(params[:confirm_string])
       if token and token.user.new_email?
         @user = token.user


@@ -242,7 +382,8 @@ class UserController < ApplicationController
         session[:user] = @user.id
         redirect_to :action => 'account', :display_name => @user.display_name
       else
         session[:user] = @user.id
         redirect_to :action => 'account', :display_name => @user.display_name
       else

-        flash.now[:error] = t 'user.confirm_email.failure'
+        flash[:error] = t 'user.confirm_email.failure'
+        redirect_to :action => 'account', :display_name => @user.display_name

       end
     end
   end
       end
     end
   end


@@ -314,54 +455,226 @@ class UserController < ApplicationController
   end
 
   ##
   end
 
   ##

-  # activate a user, allowing them to log in
-  def activate
-    @this_user.update_attributes(:status => "active")
+  # sets a user's status
+  def set_status
+    @this_user.update_attributes(:status => params[:status])

     redirect_to :controller => 'user', :action => 'view', :display_name => params[:display_name]
   end
 
   ##
     redirect_to :controller => 'user', :action => 'view', :display_name => params[:display_name]
   end
 
   ##

-  # deactivate a user, preventing them from logging in
-  def deactivate
-    @this_user.update_attributes(:status => "pending")
+  # delete a user, marking them as deleted and removing personal data
+  def delete
+    @this_user.delete

     redirect_to :controller => 'user', :action => 'view', :display_name => params[:display_name]
   end
 
   ##
     redirect_to :controller => 'user', :action => 'view', :display_name => params[:display_name]
   end
 
   ##

-  # confirm a user, overriding any suspension triggered by spam scoring
-  def confirm
-    @this_user.update_attributes(:status => "confirmed")
-    redirect_to :controller => 'user', :action => 'view', :display_name => params[:display_name]
+  # display a list of users matching specified criteria
+  def list
+    if request.post?
+      ids = params[:user].keys.collect { |id| id.to_i }
+
+      User.update_all("status = 'confirmed'", :id => ids) if params[:confirm]
+      User.update_all("status = 'deleted'", :id => ids) if params[:hide]
+
+      redirect_to url_for(:status => params[:status], :ip => params[:ip], :page => params[:page])
+    else
+      conditions = Hash.new
+      conditions[:status] = params[:status] if params[:status]
+      conditions[:creation_ip] = params[:ip] if params[:ip]
+
+      @user_pages, @users = paginate(:users,
+                                     :conditions => conditions,
+                                     :order => :id,
+                                     :per_page => 50)
+    end

   end
 
   end
 

+private
+

   ##
   ##

-  # hide a user, marking them as logically deleted
-  def hide
-    @this_user.update_attributes(:status => "deleted")
-    redirect_to :controller => 'user', :action => 'view', :display_name => params[:display_name]
+  # handle password authentication
+  def password_authentication(username, password)
+    if user = User.authenticate(:username => username, :password => password)
+      successful_login(user)
+    elsif user = User.authenticate(:username => username, :password => password, :pending => true)
+      failed_login t('user.login.account not active', :reconfirm => url_for(:action => 'confirm_resend', :display_name => user.display_name))
+    elsif User.authenticate(:username => username, :password => password, :suspended => true)
+      webmaster = link_to t('user.login.webmaster'), "mailto:webmaster@openstreetmap.org"
+      failed_login t('user.login.account suspended', :webmaster => webmaster)
+    else
+      failed_login t('user.login.auth failure')
+    end

   end
 
   ##
   end
 
   ##

-  # unhide a user, clearing the logically deleted flag
-  def unhide
-    @this_user.update_attributes(:status => "active")
-    redirect_to :controller => 'user', :action => 'view', :display_name => params[:display_name]
+  # handle OpenID authentication
+  def openid_authentication(openid_url)
+    # If we don't appear to have a user for this URL then ask the
+    # provider for some extra information to help with signup
+    if openid_url and User.find_by_openid_url(openid_url)
+      required = nil
+    else
+      required = [:nickname, :email, "http://axschema.org/namePerson/friendly", "http://axschema.org/contact/email"]
+    end
+
+    # Start the authentication
+    authenticate_with_open_id(openid_expand_url(openid_url), :required => required) do |result, identity_url, sreg, ax|
+      if result.successful?
+        # We need to use the openid url passed back from the OpenID provider
+        # rather than the one supplied by the user, as these can be different.
+        #
+        # For example, you can simply enter yahoo.com in the login box rather
+        # than a user specific url. Only once it comes back from the provider
+        # provider do we know the unique address for the user.
+        if user = User.find_by_openid_url(identity_url)
+          case user.status
+            when "pending" then
+              failed_login t('user.login.account not active')
+            when "active", "confirmed" then
+              successful_login(user)
+            when "suspended" then
+              webmaster = link_to t('user.login.webmaster'), "mailto:webmaster@openstreetmap.org"
+              failed_login t('user.login.account suspended', :webmaster => webmaster)
+            else
+              failed_login t('user.login.auth failure')
+          end
+        else
+          # Guard against not getting any extension data
+          sreg = Hash.new if sreg.nil?
+          ax = Hash.new if ax.nil?
+
+          # We don't have a user registered to this OpenID, so redirect
+          # to the create account page with username and email filled
+          # in if they have been given by the OpenID provider through
+          # the simple registration protocol.
+          nickname = sreg["nickname"] || ax["http://axschema.org/namePerson/friendly"]
+          email = sreg["email"] || ax["http://axschema.org/contact/email"]
+          redirect_to :controller => 'user', :action => 'new', :nickname => nickname, :email => email, :openid => identity_url
+        end
+      elsif result.missing?
+        failed_login t('user.login.openid missing provider')
+      elsif result.invalid?
+        failed_login t('user.login.openid invalid')
+      else
+        failed_login t('user.login.auth failure')
+      end
+    end

   end
 
   ##
   end
 
   ##

-  # delete a user, marking them as deleted and removing personal data
-  def delete
-    @this_user.delete
-    redirect_to :controller => 'user', :action => 'view', :display_name => params[:display_name]
+  # verify an OpenID URL
+  def openid_verify(openid_url, user)
+    user.openid_url = openid_url
+
+    authenticate_with_open_id(openid_expand_url(openid_url)) do |result, identity_url|
+      if result.successful?
+        # We need to use the openid url passed back from the OpenID provider
+        # rather than the one supplied by the user, as these can be different.
+        #
+        # For example, you can simply enter yahoo.com in the login box rather
+        # than a user specific url. Only once it comes back from the provider
+        # provider do we know the unique address for the user.
+        user.openid_url = identity_url
+        yield user
+      elsif result.missing?
+        flash.now[:error] = t 'user.login.openid missing provider'
+      elsif result.invalid?
+        flash.now[:error] = t 'user.login.openid invalid'
+      else
+        flash.now[:error] = t 'user.login.auth failure'
+      end
+    end

   end
   end

-private
+
+  ##
+  # special case some common OpenID providers by applying heuristics to
+  # try and come up with the correct URL based on what the user entered
+  def openid_expand_url(openid_url)
+    if openid_url.nil?
+      return nil
+    elsif openid_url.match(/(.*)gmail.com(\/?)$/) or openid_url.match(/(.*)googlemail.com(\/?)$/)
+      # Special case gmail.com as it is potentially a popular OpenID
+      # provider and, unlike yahoo.com, where it works automatically, Google
+      # have hidden their OpenID endpoint somewhere obscure this making it
+      # somewhat less user friendly.
+      return 'https://www.google.com/accounts/o8/id'
+    else
+      return openid_url
+    end
+  end  
+
+  ##
+  # process a successful login
+  def successful_login(user)
+    session[:user] = user.id
+    session_expires_after 1.month if session[:remember_me]
+
+    target = session[:referer] || url_for(:controller => :site, :action => :index)
+
+    # The user is logged in, so decide where to send them:
+    #
+    # - If they haven't seen the contributor terms, send them there.
+    # - If they have a block on them, show them that.
+    # - If they were referred to the login, send them back there.
+    # - Otherwise, send them to the home page.
+    if REQUIRE_TERMS_SEEN and not user.terms_seen
+      redirect_to :controller => :user, :action => :terms, :referer => target
+    elsif user.blocked_on_view
+      redirect_to user.blocked_on_view, :referer => target
+    else
+      redirect_to target
+    end
+
+    session.delete(:remember_me)
+    session.delete(:referer)
+  end
+
+  ##
+  # process a failed login
+  def failed_login(message)
+    flash[:error] = message
+
+    redirect_to :action => 'login', :referer =>  session[:referer]
+
+    session.delete(:remember_me)
+    session.delete(:referer)
+  end
+
+  ##
+  # update a user's details
+  def update_user(user)
+    if user.save
+      set_locale
+
+      if user.new_email.nil? or user.new_email.empty?
+        flash.now[:notice] = t 'user.account.flash update success'
+      else
+        flash.now[:notice] = t 'user.account.flash update success confirm needed'
+
+        begin
+          Notifier.deliver_email_confirm(user, user.tokens.create)
+        rescue
+          # Ignore errors sending email
+        end
+      end
+    end
+  end
+

   ##
   # require that the user is a administrator, or fill out a helpful error message
   # and return them to the user page.
   def require_administrator
   ##
   # require that the user is a administrator, or fill out a helpful error message
   # and return them to the user page.
   def require_administrator

-    unless @user.administrator?
+    if @user and not @user.administrator?

       flash[:error] = t('user.filter.not_an_administrator')
       flash[:error] = t('user.filter.not_an_administrator')

-      redirect_to :controller => 'user', :action => 'view', :display_name => params[:display_name]
+
+      if params[:display_name]
+        redirect_to :controller => 'user', :action => 'view', :display_name => params[:display_name]
+      else
+        redirect_to :controller => 'user', :action => 'login', :referer => request.request_uri
+      end
+    elsif not @user
+      redirect_to :controller => 'user', :action => 'login', :referer => request.request_uri

     end
   end
 
     end
   end
 


@@ -372,4 +685,28 @@ private
   rescue ActiveRecord::RecordNotFound
     redirect_to :controller => 'user', :action => 'view', :display_name => params[:display_name] unless @this_user
   end
   rescue ActiveRecord::RecordNotFound
     redirect_to :controller => 'user', :action => 'view', :display_name => params[:display_name] unless @this_user
   end

+
+  ##
+  # Choose the layout to use. See
+  # https://rails.lighthouseapp.com/projects/8994/tickets/5371-layout-with-onlyexcept-options-makes-other-actions-render-without-layouts
+  def choose_layout
+    oauth_url = url_for(:controller => :oauth, :action => :oauthorize, :only_path => true)
+
+    if [ 'api_details' ].include? action_name
+      nil
+    elsif params[:referer] and URI.parse(params[:referer]).path == oauth_url
+      'slim'
+    else
+      'site'
+    end
+  end
+
+  ##
+  #
+  def disable_terms_redirect
+    # this is necessary otherwise going to the user terms page, when 
+    # having not agreed already would cause an infinite redirect loop.
+    # it's .now so that this doesn't propagate to other pages.
+    flash.now[:skip_terms] = true
+  end

 end
 end