X-Git-Url: https://git.openstreetmap.org/rails.git/blobdiff_plain/011237c2c5c82a638e3bbd5b78196baea576a5a9..cd81a3f60506cc0da60a0c84e04f9ed63c9bfe9f:/app/controllers/changeset_controller.rb diff --git a/app/controllers/changeset_controller.rb b/app/controllers/changeset_controller.rb index e8212d510..d34eb8739 100644 --- a/app/controllers/changeset_controller.rb +++ b/app/controllers/changeset_controller.rb @@ -1,22 +1,21 @@ # The ChangesetController is the RESTful interface to Changeset objects class ChangesetController < ApplicationController - layout 'site', :except => :rss + layout 'site' require 'xml/libxml' - before_filter :authorize_web, :only => [:list, :list_user, :list_bbox] - before_filter :set_locale, :only => [:list, :list_user, :list_bbox] + skip_before_filter :verify_authenticity_token, :except => [:list] + before_filter :authorize_web, :only => [:list, :feed] + before_filter :set_locale, :only => [:list, :feed] before_filter :authorize, :only => [:create, :update, :delete, :upload, :include, :close] + before_filter :require_allow_write_api, :only => [:create, :update, :delete, :upload, :include, :close] before_filter :require_public_data, :only => [:create, :update, :delete, :upload, :include, :close] before_filter :check_api_writable, :only => [:create, :update, :delete, :upload, :include] - before_filter :check_api_readable, :except => [:create, :update, :delete, :upload, :download, :query] + before_filter :check_api_readable, :except => [:create, :update, :delete, :upload, :download, :query, :list, :feed] + before_filter(:only => [:list, :feed]) { |c| c.check_database_readable(true) } after_filter :compress_output - around_filter :api_call_handle_error - - filter_parameter_logging " [:list, :feed] + around_filter :web_timeout, :only => [:list, :feed] # Helper methods for checking consistency include ConsistencyValidations @@ -27,39 +26,36 @@ class ChangesetController < ApplicationController cs = Changeset.from_xml(request.raw_post, true) - if cs - cs.user_id = @user.id - cs.save_with_tags! - render :text => cs.id.to_s, :content_type => "text/plain" - else - raise OSM::APIBadXMLError.new(Changeset, request.raw_post); - end + # Assume that Changeset.from_xml has thrown an exception if there is an error parsing the xml + cs.user_id = @user.id + cs.save_with_tags! + render :text => cs.id.to_s, :content_type => "text/plain" end ## - # Return XML giving the basic info about the changeset. Does not + # Return XML giving the basic info about the changeset. Does not # return anything about the nodes, ways and relations in the changeset. def read changeset = Changeset.find(params[:id]) render :text => changeset.to_xml.to_s, :content_type => "text/xml" end - + ## # marks a changeset as closed. this may be called multiple times # on the same changeset, so is idempotent. - def close + def close assert_method :put - - changeset = Changeset.find(params[:id]) + + changeset = Changeset.find(params[:id]) check_changeset_consistency(changeset, @user) # to close the changeset, we'll just set its closed_at time to - # now. this might not be enough if there are concurrency issues, + # now. this might not be enough if there are concurrency issues, # but we'll have to wait and see. changeset.set_closed_time_now changeset.save! - render :nothing => true + render :text => "" end ## @@ -74,11 +70,11 @@ class ChangesetController < ApplicationController cs = Changeset.find(params[:id]) check_changeset_consistency(cs, @user) - + # keep an array of lons and lats lon = Array.new lat = Array.new - + # the request is in pseudo-osm format... this is kind-of an # abuse, maybe should change to some other format? doc = XML::Parser.string(request.raw_post).parse @@ -86,17 +82,17 @@ class ChangesetController < ApplicationController lon << n['lon'].to_f * GeoRecord::SCALE lat << n['lat'].to_f * GeoRecord::SCALE end - + # add the existing bounding box to the lon-lat array lon << cs.min_lon unless cs.min_lon.nil? lat << cs.min_lat unless cs.min_lat.nil? lon << cs.max_lon unless cs.max_lon.nil? lat << cs.max_lat unless cs.max_lat.nil? - + # collapse the arrays to minimum and maximum - cs.min_lon, cs.min_lat, cs.max_lon, cs.max_lat = + cs.min_lon, cs.min_lat, cs.max_lon, cs.max_lat = lon.min, lat.min, lon.max, lat.max - + # save the larger bounding box and return the changeset, which # will include the bigger bounding box. cs.save! @@ -113,7 +109,7 @@ class ChangesetController < ApplicationController # Furthermore, each element in the diff can only reference the current # changeset. # - # Returns: a diffResult document, as described in + # Returns: a diffResult document, as described in # http://wiki.openstreetmap.org/wiki/OSM_Protocol_Version_0.6 def upload # only allow POST requests, as the upload method is most definitely @@ -124,7 +120,7 @@ class ChangesetController < ApplicationController changeset = Changeset.find(params[:id]) check_changeset_consistency(changeset, @user) - + diff_reader = DiffReader.new(request.raw_post, changeset) Changeset.transaction do result = diff_reader.commit @@ -136,62 +132,61 @@ class ChangesetController < ApplicationController # download the changeset as an osmChange document. # # to make it easier to revert diffs it would be better if the osmChange - # format were reversible, i.e: contained both old and new versions of + # format were reversible, i.e: contained both old and new versions of # modified elements. but it doesn't at the moment... # # this method cannot order the database changes fully (i.e: timestamp and # version number may be too coarse) so the resulting diff may not apply - # to a different database. however since changesets are not atomic this + # to a different database. however since changesets are not atomic this # behaviour cannot be guaranteed anyway and is the result of a design # choice. def download changeset = Changeset.find(params[:id]) - - # get all the elements in the changeset and stick them in a big array. - elements = [changeset.old_nodes, - changeset.old_ways, - changeset.old_relations].flatten - - # sort the elements by timestamp and version number, as this is the - # almost sensible ordering available. this would be much nicer if - # global (SVN-style) versioning were used - then that would be + + # get all the elements in the changeset which haven't been redacted + # and stick them in a big array. + elements = [changeset.old_nodes.unredacted, + changeset.old_ways.unredacted, + changeset.old_relations.unredacted].flatten + + # sort the elements by timestamp and version number, as this is the + # almost sensible ordering available. this would be much nicer if + # global (SVN-style) versioning were used - then that would be # unambiguous. - elements.sort! do |a, b| + elements.sort! do |a, b| if (a.timestamp == b.timestamp) a.version <=> b.version else - a.timestamp <=> b.timestamp + a.timestamp <=> b.timestamp end end - + + # create changeset and user caches + changeset_cache = {} + user_display_name_cache = {} + # create an osmChange document for the output result = OSM::API.new.get_xml_doc result.root.name = "osmChange" # generate an output element for each operation. note: we avoid looking - # at the history because it is simpler - but it would be more correct to + # at the history because it is simpler - but it would be more correct to # check these assertions. elements.each do |elt| result.root << - if (elt.version == 1) + if (elt.version == 1) # first version, so it must be newly-created. created = XML::Node.new "create" - created << elt.to_xml_node + created << elt.to_xml_node(changeset_cache, user_display_name_cache) else - # get the previous version from the element history - prev_elt = elt.class.find(:first, :conditions => - ['id = ? and version = ?', - elt.id, elt.version]) unless elt.visible - # if the element isn't visible then it must have been deleted, so - # output the *previous* XML + # if the element isn't visible then it must have been deleted deleted = XML::Node.new "delete" - deleted << prev_elt.to_xml_node + deleted << elt.to_xml_node(changeset_cache, user_display_name_cache) else - # must be a modify, for which we don't need the previous version - # yet... + # must be a modify modified = XML::Node.new "modify" - modified << elt.to_xml_node + modified << elt.to_xml_node(changeset_cache, user_display_name_cache) end end end @@ -202,28 +197,31 @@ class ChangesetController < ApplicationController ## # query changesets by bounding box, time, user or open/closed status. def query + # find any bounding box + if params['bbox'] + bbox = BoundingBox.from_bbox_params(params) + end + # create the conditions that the user asked for. some or all of # these may be nil. - conditions = conditions_bbox(params['bbox']) - conditions = cond_merge conditions, conditions_user(params['user']) - conditions = cond_merge conditions, conditions_time(params['time']) - conditions = cond_merge conditions, conditions_open(params['open']) - conditions = cond_merge conditions, conditions_closed(params['closed']) + changesets = Changeset.all + changesets = conditions_bbox(changesets, bbox) + changesets = conditions_user(changesets, params['user'], params['display_name']) + changesets = conditions_time(changesets, params['time']) + changesets = conditions_open(changesets, params['open']) + changesets = conditions_closed(changesets, params['closed']) # create the results document results = OSM::API.new.get_xml_doc # add all matching changesets to the XML results document - Changeset.find(:all, - :conditions => conditions, - :limit => 100, - :order => 'created_at desc').each do |cs| + changesets.order("created_at DESC").limit(100).each do |cs| results.root << cs.to_xml_node end render :text => results.to_s, :content_type => "text/xml" end - + ## # updates a changeset's tags. none of the changeset's attributes are # user-modifiable, so they will be ignored. @@ -244,193 +242,142 @@ class ChangesetController < ApplicationController changeset.update_from(new_changeset, @user) render :text => changeset.to_xml, :mime_type => "text/xml" else - - render :nothing => true, :status => :bad_request + + render :text => "", :status => :bad_request end end - - ## # list edits (open changesets) in reverse chronological order def list - conditions = conditions_nonempty - - - # @changesets = Changeset.find(:all, :order => "closed_at DESC", :conditions => ['closed_at < ?', DateTime.now], :limit=> 20) - - - #@edit_pages, @edits = paginate(:changesets, - # :include => [:user, :changeset_tags], - # :conditions => conditions, - # :order => "changesets.created_at DESC", - # :per_page => 20) - # - - @edits = Changeset.find(:all, - :order => "changesets.created_at DESC", - :conditions => conditions, - :limit => 20) - - end - - ## - # list edits (changesets) belonging to a user - def list_user - user = User.find_by_display_name(params[:display_name], :conditions => {:visible => true}) - - if user - @display_name = user.display_name - if not user.data_public? and @user != user - @edits = nil - render - else - conditions = cond_merge conditions, ['user_id = ?', user.id] - conditions = cond_merge conditions, conditions_nonempty - @edit_pages, @edits = paginate(:changesets, - :include => [:user, :changeset_tags], - :conditions => conditions, - :order => "changesets.created_at DESC", - :per_page => 20) - end - else - @not_found_user = params[:display_name] - render :template => 'user/no_such_user', :status => :not_found + if request.format == :atom and params[:max_id] + redirect_to params.merge({ :max_id => nil }), :status => :moved_permanently + return end - end - ## - # list edits (changesets) belonging to a user - def rss - user = User.find_by_display_name(params[:display_name], :conditions => {:visible => true}) - - if user - @display_name = user.display_name - if not user.data_public? and @user != user - @edits = nil - render - else - conditions = cond_merge conditions, ['user_id = ?', user.id] - conditions = cond_merge conditions, conditions_nonempty - @edit_pages, @edits = paginate(:changesets, - :include => [:user, :changeset_tags], - :conditions => conditions, - :order => "changesets.created_at DESC", - :per_page => 20) + if params[:display_name] + user = User.find_by_display_name(params[:display_name]) + if !user || !user.active? + render_unknown_user params[:display_name] + return end + end + + if (params[:friends] || params[:nearby]) && !@user && request.format == :html + require_user + return + end + + if request.format == :html and !params[:list] + require_oauth + render :action => :history, :layout => map_layout else - @not_found_user = params[:display_name] - render :template => 'user/no_such_user', :status => :not_found + changesets = conditions_nonempty(Changeset.all) + + if params[:display_name] + if user.data_public? or user == @user + changesets = changesets.where(:user_id => user.id) + else + changesets = changesets.where("false") + end + elsif params[:bbox] + changesets = conditions_bbox(changesets, BoundingBox.from_bbox_params(params)) + elsif params[:friends] && @user + changesets = changesets.where(:user_id => @user.friend_users.public) + elsif params[:nearby] && @user + changesets = changesets.where(:user_id => @user.nearby) + end + + if params[:max_id] + changesets = changesets.where("changesets.id <= ?", params[:max_id]) + end + + @edits = changesets.order("changesets.id DESC").limit(20).preload(:user, :changeset_tags) + + render :action => :list, :layout => false end end - + ## - # list changesets in a bbox - def list_bbox - # support 'bbox' param or alternatively 'minlon', 'minlat' etc - if params['bbox'] - bbox = params['bbox'] - elsif params['minlon'] and params['minlat'] and params['maxlon'] and params['maxlat'] - bbox = h(params['minlon']) + ',' + h(params['minlat']) + ',' + h(params['maxlon']) + ',' + h(params['maxlat']) - else - #TODO: fix bugs in location determination for history tab (and other tabs) then uncomment this redirect - #redirect_to :action => 'list' - - # For now just render immediately, and skip the db - render - return - end - - conditions = conditions_bbox(bbox); - conditions = cond_merge conditions, conditions_nonempty - - @edit_pages, @edits = paginate(:changesets, - :include => [:user, :changeset_tags], - :conditions => conditions, - :order => "changesets.created_at DESC", - :per_page => 20) - - @bbox = sanitise_boundaries(bbox.split(/,/)) unless bbox==nil + # list edits as an atom feed + def feed + list end - + private #------------------------------------------------------------ # utility functions below. - #------------------------------------------------------------ - - ## - # merge two conditions - def cond_merge(a, b) - if a and b - a_str = a.shift - b_str = b.shift - return [ a_str + " AND " + b_str ] + a + b - elsif a - return a - else b - return b - end - end + #------------------------------------------------------------ ## - # if a bounding box was specified then parse it and do some sanity - # checks. this is mostly the same as the map call, but without the - # area restriction. - def conditions_bbox(bbox) - unless bbox.nil? - raise OSM::APIBadUserInput.new("Bounding box should be min_lon,min_lat,max_lon,max_lat") unless bbox.count(',') == 3 - bbox = sanitise_boundaries(bbox.split(/,/)) - raise OSM::APIBadUserInput.new("Minimum longitude should be less than maximum.") unless bbox[0] <= bbox[2] - raise OSM::APIBadUserInput.new("Minimum latitude should be less than maximum.") unless bbox[1] <= bbox[3] - return ['min_lon < ? and max_lon > ? and min_lat < ? and max_lat > ?', - bbox[2] * GeoRecord::SCALE, bbox[0] * GeoRecord::SCALE, bbox[3]* GeoRecord::SCALE, bbox[1] * GeoRecord::SCALE] + # if a bounding box was specified do some sanity checks. + # restrict changesets to those enclosed by a bounding box + # we need to return both the changesets and the bounding box + def conditions_bbox(changesets, bbox) + if bbox + bbox.check_boundaries + bbox = bbox.to_scaled + return changesets.where("min_lon < ? and max_lon > ? and min_lat < ? and max_lat > ?", + bbox.max_lon.to_i, bbox.min_lon.to_i, + bbox.max_lat.to_i, bbox.min_lat.to_i) else - return nil + return changesets end end ## # restrict changesets to those by a particular user - def conditions_user(user) - unless user.nil? - # user input checking, we don't have any UIDs < 1 - raise OSM::APIBadUserInput.new("invalid user ID") if user.to_i < 1 + def conditions_user(changesets, user, name) + unless user.nil? and name.nil? + # shouldn't provide both name and UID + raise OSM::APIBadUserInput.new("provide either the user ID or display name, but not both") if user and name + + # use either the name or the UID to find the user which we're selecting on. + u = if name.nil? + # user input checking, we don't have any UIDs < 1 + raise OSM::APIBadUserInput.new("invalid user ID") if user.to_i < 1 + u = User.find(user.to_i) + else + u = User.find_by_display_name(name) + end - u = User.find(user.to_i) - # should be able to get changesets of public users only, or + # make sure we found a user + raise OSM::APINotFoundError.new if u.nil? + + # should be able to get changesets of public users only, or # our own changesets regardless of public-ness. unless u.data_public? # get optional user auth stuff so that users can see their own # changesets if they're non-public setup_user_auth - + raise OSM::APINotFoundError if @user.nil? or @user.id != u.id end - return ['user_id = ?', u.id] + return changesets.where(:user_id => u.id) else - return nil + return changesets end end ## # restrict changes to those closed during a particular time period - def conditions_time(time) + def conditions_time(changesets, time) unless time.nil? - # if there is a range, i.e: comma separated, then the first is + # if there is a range, i.e: comma separated, then the first is # low, second is high - same as with bounding boxes. if time.count(',') == 1 # check that we actually have 2 elements in the array times = time.split(/,/) - raise OSM::APIBadUserInput.new("bad time range") if times.size != 2 + raise OSM::APIBadUserInput.new("bad time range") if times.size != 2 from, to = times.collect { |t| DateTime.parse(t) } - return ['closed_at >= ? and created_at <= ?', from, to] + return changesets.where("closed_at >= ? and created_at <= ?", from, to) else # if there is no comma, assume its a lower limit on time - return ['closed_at >= ?', DateTime.parse(time)] + return changesets.where("closed_at >= ?", DateTime.parse(time)) end else - return nil + return changesets end # stupid DateTime seems to throw both of these for bad parsing, so # we have to catch both and ensure the correct code path is taken. @@ -444,25 +391,33 @@ private # return changesets which are open (haven't been closed yet) # we do this by seeing if the 'closed at' time is in the future. Also if we've # hit the maximum number of changes then it counts as no longer open. - # if parameter 'open' is nill then open and closed changsets are returned - def conditions_open(open) - return open.nil? ? nil : ['closed_at >= ? and num_changes <= ?', - Time.now.getutc, Changeset::MAX_ELEMENTS] + # if parameter 'open' is nill then open and closed changesets are returned + def conditions_open(changesets, open) + if open.nil? + return changesets + else + return changesets.where("closed_at >= ? and num_changes <= ?", + Time.now.getutc, Changeset::MAX_ELEMENTS) + end end - + ## # query changesets which are closed # ('closed at' time has passed or changes limit is hit) - def conditions_closed(closed) - return closed.nil? ? nil : ['closed_at < ? and num_changes > ?', - Time.now.getutc, Changeset::MAX_ELEMENTS] + def conditions_closed(changesets, closed) + if closed.nil? + return changesets + else + return changesets.where("closed_at < ? or num_changes > ?", + Time.now.getutc, Changeset::MAX_ELEMENTS) + end end ## # eliminate empty changesets (where the bbox has not been set) # this should be applied to all changeset list displays - def conditions_nonempty() - return ['min_lat IS NOT NULL'] + def conditions_nonempty(changesets) + return changesets.where("num_changes > 0") end - + end