X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/a1cb0f04d476101116087286ff072d3a137355cb..59444581dc0cf1f140c596d518596b0e7da669ac:/lib/osm.rb

diff --git a/lib/osm.rb b/lib/osm.rb
index 78d32e739..1951e3c31 100644
--- a/lib/osm.rb
+++ b/lib/osm.rb
@@ -1,13 +1,16 @@
 # The OSM module provides support functions for OSM.
 module OSM
-
-  require 'time'
-  require 'rexml/parsers/sax2parser'
-  require 'rexml/text'
-  require 'xml/libxml'
-  require 'digest/md5'
-  require 'RMagick'
-  require 'nokogiri'
+  require "time"
+  require "rexml/parsers/sax2parser"
+  require "rexml/text"
+  require "xml/libxml"
+
+  if defined?(SystemTimer)
+    Timer = SystemTimer
+  else
+    require "timeout"
+    Timer = Timeout
+  end
 
   # The base class for API Errors.
   class APIError < RuntimeError
@@ -20,6 +23,17 @@ module OSM
     end
   end
 
+  # Raised when access is denied.
+  class APIAccessDenied < RuntimeError
+    def status
+      :forbidden
+    end
+
+    def to_s
+      "Access denied"
+    end
+  end
+
   # Raised when an API object is not found.
   class APINotFoundError < APIError
     def status
@@ -49,7 +63,8 @@ module OSM
   # Raised when to delete an already-deleted object.
   class APIAlreadyDeletedError < APIError
     def initialize(object = "object", object_id = "")
-      @object, @object_id = object, object_id
+      @object = object
+      @object_id = object_id
     end
 
     attr_reader :object, :object_id
@@ -91,6 +106,57 @@ module OSM
     end
   end
 
+  # Raised when the changeset provided is not yet closed
+  class APIChangesetNotYetClosedError < APIError
+    def initialize(changeset)
+      @changeset = changeset
+    end
+
+    attr_reader :changeset
+
+    def status
+      :conflict
+    end
+
+    def to_s
+      "The changeset #{@changeset.id} is not yet closed."
+    end
+  end
+
+  # Raised when a user is already subscribed to the changeset
+  class APIChangesetAlreadySubscribedError < APIError
+    def initialize(changeset)
+      @changeset = changeset
+    end
+
+    attr_reader :changeset
+
+    def status
+      :conflict
+    end
+
+    def to_s
+      "You are already subscribed to changeset #{@changeset.id}."
+    end
+  end
+
+  # Raised when a user is not subscribed to the changeset
+  class APIChangesetNotSubscribedError < APIError
+    def initialize(changeset)
+      @changeset = changeset
+    end
+
+    attr_reader :changeset
+
+    def status
+      :not_found
+    end
+
+    def to_s
+      "You are not subscribed to changeset #{@changeset.id}."
+    end
+  end
+
   # Raised when a change is expecting a changeset, but the changeset doesn't exist
   class APIChangesetMissingError < APIError
     def status
@@ -106,7 +172,8 @@ module OSM
   # the changeset ID that the diff was uploaded to.
   class APIChangesetMismatchError < APIError
     def initialize(provided, allowed)
-      @provided, @allowed = provided, allowed
+      @provided = provided
+      @allowed = allowed
     end
 
     def status
@@ -137,8 +204,10 @@ module OSM
   # 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
+    def initialize(model, xml, message = "")
+      @model = model
+      @xml = xml
+      @message = message
     end
 
     def status
@@ -153,7 +222,10 @@ module OSM
   # Raised when the provided version is not equal to the latest in the db.
   class APIVersionMismatchError < APIError
     def initialize(id, type, provided, latest)
-      @id, @type, @provided, @latest = id, type, provided, latest
+      @id = id
+      @type = type
+      @provided = provided
+      @latest = latest
     end
 
     attr_reader :provided, :latest, :id, :type
@@ -171,7 +243,9 @@ module OSM
   # this is now forbidden by the API.
   class APIDuplicateTagsError < APIError
     def initialize(type, id, tag_key)
-      @type, @id, @tag_key = type, id, tag_key
+      @type = type
+      @id = id
+      @tag_key = tag_key
     end
 
     attr_reader :type, :id, :tag_key
@@ -189,7 +263,9 @@ module OSM
   # 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
+      @id = id
+      @provided = provided
+      @max = max
     end
 
     attr_reader :id, :provided, :max
@@ -263,11 +339,75 @@ module OSM
     end
   end
 
+  ##
+  # raised when someone tries to redact a current version of
+  # an element - only historical versions can be redacted.
+  class APICannotRedactError < APIError
+    def status
+      :bad_request
+    end
+
+    def to_s
+      "Cannot redact current version of element, only historical versions may be redacted."
+    end
+  end
+
+  # Raised when the note provided is already closed
+  class APINoteAlreadyClosedError < APIError
+    def initialize(note)
+      @note = note
+    end
+
+    attr_reader :note
+
+    def status
+      :conflict
+    end
+
+    def to_s
+      "The note #{@note.id} was closed at #{@note.closed_at}"
+    end
+  end
+
+  # Raised when the note provided is already open
+  class APINoteAlreadyOpenError < APIError
+    def initialize(note)
+      @note = note
+    end
+
+    attr_reader :note
+
+    def status
+      :conflict
+    end
+
+    def to_s
+      "The note #{@note.id} is already open"
+    end
+  end
+
+  # raised when a two preferences have a duplicate key string.
+  class APIDuplicatePreferenceError < APIError
+    def initialize(key)
+      @key = key
+    end
+
+    attr_reader :key
+
+    def status
+      :bad_request
+    end
+
+    def to_s
+      "Duplicate preferences with key #{@key}"
+    end
+  end
+
   # Helper methods for going to/from mercator and lat/lng.
   class Mercator
     include Math
 
-    #init me with your bounding box and the size of your image
+    # init me with your bounding box and the size of your image
     def initialize(min_lat, min_lon, max_lat, max_lon, width, height)
       xsize = xsheet(max_lon) - xsheet(min_lon)
       ysize = ysheet(max_lat) - ysheet(min_lat)
@@ -288,7 +428,7 @@ module OSM
       @by = ysheet(max_lat) + ypad / 2
     end
 
-    #the following two functions will give you the x/y on the entire sheet
+    # the following two functions will give you the x/y on the entire sheet
 
     def ysheet(lat)
       log(tan(PI / 4 + (lat * PI / 180 / 2))) / (PI / 180)
@@ -298,14 +438,14 @@ module OSM
       lon
     end
 
-    #and these two will give you the right points on your image. all the constants can be reduced to speed things up. FIXME
+    # and these two will give you the right points on your image. all the constants can be reduced to speed things up. FIXME
 
     def y(lat)
-      return @height - ((ysheet(lat) - @ty) / (@by - @ty) * @height)
+      @height - ((ysheet(lat) - @ty) / (@by - @ty) * @height)
     end
 
     def x(lon)
-      return  ((xsheet(lon) - @tx) / (@bx - @tx) * @width)
+      ((xsheet(lon) - @tx) / (@bx - @tx) * @width)
     end
   end
 
@@ -322,25 +462,25 @@ module OSM
     def distance(lat, lon)
       lat = lat * PI / 180
       lon = lon * PI / 180
-      return 6372.795 * 2 * asin(sqrt(sin((lat - @lat) / 2) ** 2 + cos(@lat) * cos(lat) * sin((lon - @lon)/2) ** 2))
+      6372.795 * 2 * asin(sqrt(sin((lat - @lat) / 2)**2 + cos(@lat) * cos(lat) * sin((lon - @lon) / 2)**2))
     end
 
     # 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))
+      latradius = 2 * asin(sqrt(sin(radius / 6372.795 / 2)**2))
 
       begin
-        lonradius = 2 * asin(sqrt(sin(radius / 6372.795 / 2) ** 2 / cos(@lat) ** 2))
-      rescue Errno::EDOM
+        lonradius = 2 * asin(sqrt(sin(radius / 6372.795 / 2)**2 / cos(@lat)**2))
+      rescue Errno::EDOM, Math::DomainError
         lonradius = PI
       end
 
-      minlat = (@lat - latradius) * 180 / PI
-      maxlat = (@lat + latradius) * 180 / PI
-      minlon = (@lon - lonradius) * 180 / PI
-      maxlon = (@lon + lonradius) * 180 / PI
+      minlat = [(@lat - latradius) * 180 / PI, -90].max
+      maxlat = [(@lat + latradius) * 180 / PI, 90].min
+      minlon = [(@lon - lonradius) * 180 / PI, -180].max
+      maxlon = [(@lon + lonradius) * 180 / PI, 180].min
 
-      return { :minlat => minlat, :maxlat => maxlat, :minlon => minlon, :maxlon => maxlon }
+      BoundingBox.new(minlon, minlat, maxlon, maxlat)
     end
 
     # get the SQL to use to calculate distance
@@ -349,198 +489,94 @@ module OSM
     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 = XML::Encoding::UTF_8
-
-      rss = XML::Node.new 'rss'
-      @doc.root = rss
-      rss['version'] = "2.0"
-      rss['xmlns:geo'] = "http://www.w3.org/2003/01/geo/wgs84_pos#"
-      @channel = XML::Node.new 'channel'
-      rss << @channel
-      title = XML::Node.new 'title'
-      title <<  feed_title
-      @channel << title
-      description_el = XML::Node.new 'description'
-      @channel << description_el
-
-      description_el << feed_description
-      link = XML::Node.new 'link'
-      link << feed_url
-      @channel << link
-      image = XML::Node.new 'image'
-      @channel << image
-      url = XML::Node.new 'url'
-      url << 'http://www.openstreetmap.org/images/mag_map-rss2.0.png'
-      image << url
-      title = XML::Node.new 'title'
-      title << "OpenStreetMap"
-      image << title
-      width = XML::Node.new 'width'
-      width << '100'
-      image << width
-      height = XML::Node.new 'height'
-      height << '100'
-      image << height
-      link = XML::Node.new 'link'
-      link << feed_url
-      image << link
-    end
-
-    def add(latitude=0, longitude=0, title_text='dummy title', author_text='anonymous', url='http://www.example.com/', description_text='dummy description', timestamp=DateTime.now)
-      item = XML::Node.new 'item'
-
-      title = XML::Node.new 'title'
-      item << title
-      title << title_text
-      link = XML::Node.new 'link'
-      link << url
-      item << link
-
-      guid = XML::Node.new 'guid'
-      guid << url
-      item << guid
-
-      description = XML::Node.new 'description'
-      description << description_text
-      item << description
-
-      author = XML::Node.new 'author'
-      author << author_text
-      item << author
-
-      pubDate = XML::Node.new 'pubDate'
-      pubDate << timestamp.to_s(:rfc822)
-      item << pubDate
-
-      if latitude
-        lat_el = XML::Node.new 'geo:lat'
-        lat_el << latitude.to_s
-        item << lat_el
-      end
-
-      if longitude
-        lon_el = XML::Node.new 'geo:long'
-        lon_el << longitude.to_s
-        item << lon_el
-      end
-
-      @channel << item
-    end
-
-    def to_s
-      return @doc.to_s
-    end
-  end
-
   class API
     def get_xml_doc
       doc = XML::Document.new
       doc.encoding = XML::Encoding::UTF_8
-      root = XML::Node.new 'osm'
-      root['version'] = API_VERSION
-      root['generator'] = GENERATOR
+      root = XML::Node.new "osm"
+      xml_root_attributes.each do |k, v|
+        root[k] = v
+      end
       doc.root = root
-      return doc
+      doc
+    end
+
+    def xml_root_attributes
+      { "version" => API_VERSION.to_s,
+        "generator" => GENERATOR,
+        "copyright" => COPYRIGHT_OWNER,
+        "attribution" => ATTRIBUTION_URL,
+        "license" => LICENSE_URL }
     end
   end
 
-  def self.IPToCountry(ip_address)
-    Timeout::timeout(4) do
-      ipinfo = Quova::IpInfo.new(ip_address)
+  def self.ip_to_country(ip_address)
+    ipinfo = geoip_database.country(ip_address) if defined?(GEOIP_DATABASE)
 
-      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
+    if ipinfo
+      country = ipinfo.country_code2
+    else
+      country = http_client.get("https://api.hostip.info/country.php?ip=#{ip_address}").body
+      country = "GB" if country == "UK"
     end
 
-    return nil
-  rescue Exception
-    return nil
+    country
+  rescue StandardError
+    nil
   end
 
-  def self.IPLocation(ip_address)
-    code = OSM.IPToCountry(ip_address)
+  def self.ip_location(ip_address)
+    code = OSM.ip_to_country(ip_address)
 
-    if code and country = Country.find_by_code(code)
+    if code && country = Country.find(code)
       return { :minlon => country.min_lon, :minlat => country.min_lat, :maxlon => country.max_lon, :maxlat => country.max_lat }
     end
 
-    return nil
+    nil
+  end
+
+  # Parse a float, raising a specified exception on failure
+  def self.parse_float(str, klass, *args)
+    Float(str)
+  rescue StandardError
+    raise klass.new(*args)
   end
 
   # Construct a random token of a given length
   def self.make_token(length = 30)
-    chars = 'abcdefghijklmnopqrtuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
-    token = ''
+    chars = "abcdefghijklmnopqrtuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
+    token = ""
 
     length.times do
       token += chars[(rand * chars.length).to_i].chr
     end
 
-    return token
-  end
-
-  # Return an encrypted version of a password
-  def self.encrypt_password(password, salt)
-    return Digest::MD5.hexdigest(password) if salt.nil?
-    return Digest::MD5.hexdigest(salt + password)
+    token
   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
+  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 #{minlat} AND #{maxlat} AND #{prefix}longitude BETWEEN #{minlon} AND #{maxlon}"
+    "#{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 an SQL fragment to select a given area of the globe without using the quadtile index
-  def self.sql_for_area_no_quadtile(minlat, minlon, maxlat, maxlon, prefix = nil, without_quadtile = :false)
-    minlat = (minlat * 10000000).round
-    minlon = (minlon * 10000000).round
-    maxlat = (maxlat * 10000000).round
-    maxlon = (maxlon * 10000000).round
-
-    return "#{prefix}latitude BETWEEN #{minlat} AND #{maxlat} AND #{prefix}longitude BETWEEN #{minlon} AND #{maxlon}"
+  # Return the terms and conditions text for a given country
+  def self.legal_text_for_country(country_code)
+    file_name = Rails.root.join("config", "legales", country_code.to_s + ".yml")
+    file_name = Rails.root.join("config", "legales", DEFAULT_LEGALE + ".yml") unless File.exist? file_name
+    YAML.load_file(file_name)
   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
+  # Return the HTTP client to use
+  def self.http_client
+    @http_client ||= Faraday.new
   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)
+  # Return the GeoIP database handle
+  def self.geoip_database
+    @geoip_database ||= GeoIP.new(GEOIP_DATABASE) if defined?(GEOIP_DATABASE)
   end
 end