+ ##
+ # tests whether the API works and prevents incorrect use while trying
+ # to update nodes.
+ def test_update
+ # try and update a node without authorisation
+ # first try to delete node without auth
+ content current_nodes(:visible_node).to_xml
+ put :update, :id => current_nodes(:visible_node).id
+ assert_response :unauthorized
+
+ # setup auth
+ basic_authorization(users(:normal_user).email, "test")
+
+ ## trying to break changesets
+
+ # try and update in someone else's changeset
+ content update_changeset(current_nodes(:visible_node).to_xml,
+ changesets(:second_user_first_change).id)
+ put :update, :id => current_nodes(:visible_node).id
+ assert_response :conflict, "update with other user's changeset should be rejected"
+
+ # try and update in a closed changeset
+ content update_changeset(current_nodes(:visible_node).to_xml,
+ changesets(:normal_user_closed_change).id)
+ put :update, :id => current_nodes(:visible_node).id
+ assert_response :conflict, "update with closed changeset should be rejected"
+
+ # try and update in a non-existant changeset
+ content update_changeset(current_nodes(:visible_node).to_xml, 0)
+ put :update, :id => current_nodes(:visible_node).id
+ assert_response :conflict, "update with changeset=0 should be rejected"
+
+ ## try and submit invalid updates
+ content xml_attr_rewrite(current_nodes(:visible_node).to_xml, 'lat', 91.0);
+ put :update, :id => current_nodes(:visible_node).id
+ assert_response :bad_request, "node at lat=91 should be rejected"
+
+ content xml_attr_rewrite(current_nodes(:visible_node).to_xml, 'lat', -91.0);
+ put :update, :id => current_nodes(:visible_node).id
+ assert_response :bad_request, "node at lat=-91 should be rejected"
+
+ content xml_attr_rewrite(current_nodes(:visible_node).to_xml, 'lon', 181.0);
+ put :update, :id => current_nodes(:visible_node).id
+ assert_response :bad_request, "node at lon=181 should be rejected"
+
+ content xml_attr_rewrite(current_nodes(:visible_node).to_xml, 'lon', -181.0);
+ put :update, :id => current_nodes(:visible_node).id
+ assert_response :bad_request, "node at lon=-181 should be rejected"
+
+ ## next, attack the versioning
+ current_node_version = current_nodes(:visible_node).version
+
+ # try and submit a version behind
+ content xml_attr_rewrite(current_nodes(:visible_node).to_xml,
+ 'version', current_node_version - 1);
+ put :update, :id => current_nodes(:visible_node).id
+ assert_response :conflict, "should have failed on old version number"
+
+ # try and submit a version ahead
+ content xml_attr_rewrite(current_nodes(:visible_node).to_xml,
+ 'version', current_node_version + 1);
+ put :update, :id => current_nodes(:visible_node).id
+ assert_response :conflict, "should have failed on skipped version number"
+
+ # try and submit total crap in the version field
+ content xml_attr_rewrite(current_nodes(:visible_node).to_xml,
+ 'version', 'p1r4t3s!');
+ put :update, :id => current_nodes(:visible_node).id
+ assert_response :conflict,
+ "should not be able to put 'p1r4at3s!' in the version field"
+
+ ## finally, produce a good request which should work
+ content current_nodes(:visible_node).to_xml
+ put :update, :id => current_nodes(:visible_node).id
+ assert_response :success, "a valid update request failed"
+ end
+
+ ##
+ # test adding tags to a node
+ def test_duplicate_tags
+ # setup auth
+ basic_authorization(users(:normal_user).email, "test")
+
+ # add an identical tag to the node
+ tag_xml = XML::Node.new("tag")
+ tag_xml['k'] = current_node_tags(:t1).k
+ tag_xml['v'] = current_node_tags(:t1).v
+
+ # add the tag into the existing xml
+ node_xml = current_nodes(:visible_node).to_xml
+ node_xml.find("//osm/node").first << tag_xml
+
+ # try and upload it
+ content node_xml
+ put :update, :id => current_nodes(:visible_node).id
+ assert_response :bad_request,
+ "adding duplicate tags to a node should fail with 'bad request'"
+ end
+
+ # test whether string injection is possible
+ def test_string_injection
+ basic_authorization(users(:normal_user).email, "test")
+ changeset_id = changesets(:normal_user_first_change).id
+
+ # try and put something into a string that the API might
+ # use unquoted and therefore allow code injection...
+ content "<osm><node lat='0' lon='0' changeset='#{changeset_id}'>" +
+ '<tag k="#{@user.inspect}" v="0"/>' +
+ '</node></osm>'
+ put :create
+ assert_response :success
+ nodeid = @response.body
+
+ # find the node in the database
+ checknode = Node.find(nodeid)
+ assert_not_nil checknode, "node not found in data base after upload"
+
+ # and grab it using the api
+ get :read, :id => nodeid
+ assert_response :success
+ apinode = Node.from_xml(@response.body)
+ assert_not_nil apinode, "downloaded node is nil, but shouldn't be"
+
+ # check the tags are not corrupted
+ assert_equal checknode.tags, apinode.tags
+ assert apinode.tags.include?('#{@user.inspect}')
+ end