X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/e1b205913c9afd6b41684add7308cef4613112e2..6ffee1cf4be9b90bd8e807805ad59371c343de0d:/lib/osm.rb

diff --git a/lib/osm.rb b/lib/osm.rb
index 3ddf10f98..dd62d6620 100644
--- a/lib/osm.rb
+++ b/lib/osm.rb
@@ -7,57 +7,266 @@ module OSM
   require 'xml/libxml'
   require 'digest/md5'
   require 'RMagick'
+  require 'nokogiri'
+
+  if defined?(SystemTimer)
+    Timer = SystemTimer
+  else
+    require 'timeout'
+    Timer = Timeout
+  end
 
   # The base class for API Errors.
   class APIError < RuntimeError
-    def render_opts
-      { :text => "", :status => :internal_server_error }
+    def status
+      :internal_server_error
+    end
+
+    def to_s
+      "Generic API Error"
     end
   end
 
   # Raised when an API object is not found.
   class APINotFoundError < APIError
+    def status
+      :not_found
+    end
+
+    def to_s
+      "Object not found"
+    end
   end
 
   # Raised when a precondition to an API action fails sanity check.
   class APIPreconditionFailedError < APIError
-    def render_opts
-      { :text => "", :status => :precondition_failed }
+    def initialize(message = "")
+      @message = message
+    end
+
+    def status
+      :precondition_failed
+    end
+
+    def to_s
+      "Precondition failed: #{@message}"
     end
   end
 
   # Raised when to delete an already-deleted object.
   class APIAlreadyDeletedError < APIError
-    def render_opts
-      { :text => "", :status => :gone }
+    def initialize(object = "object", object_id = "")
+      @object, @object_id = object, object_id
+    end
+
+    attr_reader :object, :object_id
+
+    def status
+      :gone
+    end
+
+    def to_s
+      "The #{object} with the id #{object_id} has already been deleted"
     end
   end
 
   # Raised when the user logged in isn't the same as the changeset
   class APIUserChangesetMismatchError < APIError
-    def render_opts
-      { :text => "The user doesn't own that changeset", :status => :conflict }
+    def status
+      :conflict
+    end
+
+    def to_s
+      "The user doesn't own that changeset"
     end
   end
 
   # Raised when the changeset provided is already closed
   class APIChangesetAlreadyClosedError < APIError
-    def render_opts
-      { :text => "The supplied changeset has already been closed", :status => :conflict }
+    def initialize(changeset)
+      @changeset = changeset
+    end
+
+    attr_reader :changeset
+
+    def status
+      :conflict
+    end
+
+    def to_s
+      "The changeset #{@changeset.id} was closed at #{@changeset.closed_at}"
+    end
+  end
+
+  # Raised when a change is expecting a changeset, but the changeset doesn't exist
+  class APIChangesetMissingError < APIError
+    def status
+      :conflict
+    end
+
+    def to_s
+      "You need to supply a changeset to be able to make a change"
+    end
+  end
+
+  # Raised when a diff is uploaded containing many changeset IDs which don't match
+  # the changeset ID that the diff was uploaded to.
+  class APIChangesetMismatchError < APIError
+    def initialize(provided, allowed)
+      @provided, @allowed = provided, allowed
+    end
+
+    def status
+      :conflict
+    end
+
+    def to_s
+      "Changeset mismatch: Provided #{@provided} but only #{@allowed} is allowed"
+    end
+  end
+
+  # Raised when a diff upload has an unknown action. You can only have create,
+  # modify, or delete
+  class APIChangesetActionInvalid < APIError
+    def initialize(provided)
+      @provided = provided
+    end
+
+    def status
+      :bad_request
+    end
+
+    def to_s
+      "Unknown action #{@provided}, choices are create, modify, delete"
+    end
+  end
+
+  # Raised when bad XML is encountered which stops things parsing as
+  # they should.
+  class APIBadXMLError < APIError
+    def initialize(model, xml, message="")
+      @model, @xml, @message = model, xml, message
+    end
+
+    def status
+      :bad_request
+    end
+
+    def to_s
+      "Cannot parse valid #{@model} from xml string #{@xml}. #{@message}"
     end
   end
 
   # Raised when the provided version is not equal to the latest in the db.
   class APIVersionMismatchError < APIError
-    def initialize(provided, latest)
-      @provided, @latest = provided, latest
+    def initialize(id, type, provided, latest)
+      @id, @type, @provided, @latest = id, type, provided, latest
+    end
+
+    attr_reader :provided, :latest, :id, :type
+
+    def status
+      :conflict
+    end
+
+    def to_s
+      "Version mismatch: Provided #{provided}, server had: #{latest} of #{type} #{id}"
+    end
+  end
+
+  # raised when a two tags have a duplicate key string in an element.
+  # this is now forbidden by the API.
+  class APIDuplicateTagsError < APIError
+    def initialize(type, id, tag_key)
+      @type, @id, @tag_key = type, id, tag_key
+    end
+
+    attr_reader :type, :id, :tag_key
+
+    def status
+      :bad_request
+    end
+
+    def to_s
+      "Element #{@type}/#{@id} has duplicate tags with key #{@tag_key}"
+    end
+  end
+
+  # Raised when a way has more than the configured number of way nodes.
+  # This prevents ways from being to long and difficult to work with
+  class APITooManyWayNodesError < APIError
+    def initialize(id, provided, max)
+      @id, @provided, @max = id, provided, max
+    end
+
+    attr_reader :id, :provided, :max
+
+    def status
+      :bad_request
+    end
+
+    def to_s
+      "You tried to add #{provided} nodes to way #{id}, however only #{max} are allowed"
+    end
+  end
+
+  ##
+  # raised when user input couldn't be parsed
+  class APIBadUserInput < APIError
+    def initialize(message)
+      @message = message
     end
 
-    attr_reader :provided, :latest
+    def status
+      :bad_request
+    end
 
-    def render_opts
-      { :text => "Version mismatch: Provided " + provided.to_s +
-	", server had: " + latest.to_s, :status => :bad_request }
+    def to_s
+      @message
+    end
+  end
+
+  ##
+  # raised when bounding box is invalid
+  class APIBadBoundingBox < APIError
+    def initialize(message)
+      @message = message
+    end
+
+    def status
+      :bad_request
+    end
+
+    def to_s
+      @message
+    end
+  end
+
+  ##
+  # raised when an API call is made using a method not supported on that URI
+  class APIBadMethodError < APIError
+    def initialize(supported_method)
+      @supported_method = supported_method
+    end
+
+    def status
+      :method_not_allowed
+    end
+
+    def to_s
+      "Only method #{@supported_method} is supported on this URI"
+    end
+  end
+
+  ##
+  # raised when an API call takes too long
+  class APITimeoutError < APIError
+    def status
+      :request_timeout
+    end
+
+    def to_s
+      "Request timed out"
     end
   end
 
@@ -126,19 +335,31 @@ module OSM
     # get the worst case bounds for a given radius from the base position
     def bounds(radius)
       latradius = 2 * asin(sqrt(sin(radius / 6372.795 / 2) ** 2))
-      lonradius = 2 * asin(sqrt(sin(radius / 6372.795 / 2) ** 2 / cos(@lat) ** 2))
+
+      begin
+        lonradius = 2 * asin(sqrt(sin(radius / 6372.795 / 2) ** 2 / cos(@lat) ** 2))
+      rescue Errno::EDOM
+        lonradius = PI
+      end
+
       minlat = (@lat - latradius) * 180 / PI
       maxlat = (@lat + latradius) * 180 / PI
       minlon = (@lon - lonradius) * 180 / PI
       maxlon = (@lon + lonradius) * 180 / PI
+
       return { :minlat => minlat, :maxlat => maxlat, :minlon => minlon, :maxlon => maxlon }
     end
+
+    # get the SQL to use to calculate distance
+    def sql_for_distance(lat_field, lon_field)
+      "6372.795 * 2 * asin(sqrt(power(sin((radians(#{lat_field}) - #{@lat}) / 2), 2) + cos(#{@lat}) * cos(radians(#{lat_field})) * power(sin((radians(#{lon_field}) - #{@lon})/2), 2)))"
+    end
   end
 
   class GeoRSS
     def initialize(feed_title='OpenStreetMap GPS Traces', feed_description='OpenStreetMap GPS Traces', feed_url='http://www.openstreetmap.org/traces/')
       @doc = XML::Document.new
-      @doc.encoding = 'UTF-8' 
+      @doc.encoding = XML::Encoding::UTF_8
 
       rss = XML::Node.new 'rss'
       @doc.root = rss
@@ -224,31 +445,29 @@ module OSM
   class API
     def get_xml_doc
       doc = XML::Document.new
-      doc.encoding = 'UTF-8' 
+      doc.encoding = XML::Encoding::UTF_8
       root = XML::Node.new 'osm'
-      root['version'] = API_VERSION
-      root['generator'] = 'OpenStreetMap server'
+      root['version'] = API_VERSION.to_s
+      root['generator'] = GENERATOR
       doc.root = root
       return doc
     end
   end
 
-  def self.IPLocation(ip_address)
-    Timeout::timeout(4) do
-      Net::HTTP.start('api.hostip.info') do |http|
-        country = http.get("/country.php?ip=#{ip_address}").body
-        country = "GB" if country == "UK"
-        Net::HTTP.start('ws.geonames.org') do |http|
-          xml = REXML::Document.new(http.get("/countryInfo?country=#{country}").body)
-          xml.elements.each("geonames/country") do |ele|
-            minlon = ele.get_text("bBoxWest").to_s
-            minlat = ele.get_text("bBoxSouth").to_s
-            maxlon = ele.get_text("bBoxEast").to_s
-            maxlat = ele.get_text("bBoxNorth").to_s
-            return { :minlon => minlon, :minlat => minlat, :maxlon => maxlon, :maxlat => maxlat }
-          end
+  def self.IPToCountry(ip_address)
+    Timer.timeout(4) do
+      ipinfo = Quova::IpInfo.new(ip_address)
+
+      if ipinfo.status == Quova::Success then
+        country = ipinfo.country_code
+      else
+        Net::HTTP.start('api.hostip.info') do |http|
+          country = http.get("/country.php?ip=#{ip_address}").body
+          country = "GB" if country == "UK"
         end
       end
+      
+      return country.upcase
     end
 
     return nil
@@ -256,6 +475,16 @@ module OSM
     return nil
   end
 
+  def self.IPLocation(ip_address)
+    code = OSM.IPToCountry(ip_address)
+
+    if code and country = Country.find_by_code(code)
+      return { :minlon => country.min_lon, :minlat => country.min_lat, :maxlon => country.max_lon, :maxlat => country.max_lat }
+    end
+
+    return nil
+  end
+
   # Construct a random token of a given length
   def self.make_token(length = 30)
     chars = 'abcdefghijklmnopqrtuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
@@ -275,15 +504,38 @@ module OSM
   end
 
   # Return an SQL fragment to select a given area of the globe
-  def self.sql_for_area(minlat, minlon, maxlat, maxlon, prefix = nil)
-    tilesql = QuadTile.sql_for_area(minlat, minlon, maxlat, maxlon, prefix)
-    minlat = (minlat * 10000000).round
-    minlon = (minlon * 10000000).round
-    maxlat = (maxlat * 10000000).round
-    maxlon = (maxlon * 10000000).round
-
-    return "#{tilesql} AND #{prefix}latitude BETWEEN #{minlat} AND #{maxlat} AND #{prefix}longitude BETWEEN #{minlon} AND #{maxlon}"
+  def self.sql_for_area(bbox, prefix = nil)
+    tilesql = QuadTile.sql_for_area(bbox, prefix)
+    bbox = bbox.to_scaled
+
+    return "#{tilesql} AND #{prefix}latitude BETWEEN #{bbox.min_lat} AND #{bbox.max_lat} " +
+                      "AND #{prefix}longitude BETWEEN #{bbox.min_lon} AND #{bbox.max_lon}"
   end
 
+  # Return a spam score for a chunk of text
+  def self.spam_score(text)
+    link_count = 0
+    link_size = 0
 
+    doc = Nokogiri::HTML(text)
+
+    if doc.content.length > 0
+      doc.xpath("//a").each do |link|
+        link_count += 1
+        link_size += link.content.length
+      end
+
+      link_proportion = link_size.to_f / doc.content.length.to_f
+    else
+      link_proportion = 0
+    end
+
+    return [link_proportion - 0.2, 0.0].max * 200 + link_count * 20
+  end
+
+  def self.legal_text_for_country(country_code)
+    file_name = File.join(Rails.root, "config", "legales", country_code.to_s + ".yml")
+    file_name = File.join(Rails.root, "config", "legales", DEFAULT_LEGALE + ".yml") unless File.exist? file_name
+    YAML::load_file(file_name)
+  end
 end