X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/6b7bb97a1859ec13526ab09ac5a7d4fa40fea842..8bd2381e50d3c575cef3bc0f0d4c10a9bafaf292:/services/api/app/models/arvados_model.rb

diff --git a/services/api/app/models/arvados_model.rb b/services/api/app/models/arvados_model.rb
index 991755b48a..25d73178c7 100644
--- a/services/api/app/models/arvados_model.rb
+++ b/services/api/app/models/arvados_model.rb
@@ -1,3 +1,4 @@
+require 'assign_uuid'
 class ArvadosModel < ActiveRecord::Base
   self.abstract_class = true
 
@@ -7,12 +8,19 @@ class ArvadosModel < ActiveRecord::Base
   attr_protected :modified_by_user_uuid
   attr_protected :modified_by_client_uuid
   attr_protected :modified_at
+  after_initialize :log_start_state
   before_create :ensure_permission_to_create
   before_update :ensure_permission_to_update
   before_destroy :ensure_permission_to_destroy
+
   before_create :update_modified_by_fields
   before_update :maybe_update_modified_by_fields
+  after_create :log_create
+  after_update :log_update
+  after_destroy :log_destroy
   validate :ensure_serialized_attribute_type
+  validate :normalize_collection_uuids
+  validate :ensure_valid_uuids
 
   has_many :permissions, :foreign_key => :head_uuid, :class_name => 'Link', :primary_key => :uuid, :conditions => "link_class = 'permission'"
 
@@ -29,24 +37,60 @@ class ArvadosModel < ActiveRecord::Base
   end
 
   def self.kind_class(kind)
-    kind.match(/^arvados\#(.+?)(_list|List)?$/)[1].pluralize.classify.constantize rescue nil
+    kind.match(/^arvados\#(.+)$/)[1].classify.safe_constantize rescue nil
   end
 
   def href
     "#{current_api_base}/#{self.class.to_s.pluralize.underscore}/#{self.uuid}"
   end
 
-  def eager_load_associations
-    self.class.columns.each do |col|
-      re = col.name.match /^(.*)_kind$/
-      if (re and
-          self.respond_to? re[1].to_sym and
-          (auuid = self.send((re[1] + '_uuid').to_sym)) and
-          (aclass = self.class.kind_class(self.send(col.name.to_sym))) and
-          (aobject = aclass.where('uuid=?', auuid).first))
-        self.instance_variable_set('@'+re[1], aobject)
+  def self.searchable_columns operator
+    textonly_operator = !operator.match(/[<=>]/)
+    self.columns.collect do |col|
+      if col.name == 'owner_uuid'
+        nil
+      elsif [:string, :text].index(col.type)
+        col.name
+      elsif !textonly_operator and [:datetime, :integer].index(col.type)
+        col.name
       end
+    end.compact
+  end
+
+  def self.attribute_column attr
+    self.columns.select { |col| col.name == attr.to_s }.first
+  end
+
+  # def eager_load_associations
+  #   self.class.columns.each do |col|
+  #     re = col.name.match /^(.*)_kind$/
+  #     if (re and
+  #         self.respond_to? re[1].to_sym and
+  #         (auuid = self.send((re[1] + '_uuid').to_sym)) and
+  #         (aclass = self.class.kind_class(self.send(col.name.to_sym))) and
+  #         (aobject = aclass.where('uuid=?', auuid).first))
+  #       self.instance_variable_set('@'+re[1], aobject)
+  #     end
+  #   end
+  # end
+
+  def self.readable_by user
+    uuid_list = [user.uuid, *user.groups_i_can(:read)]
+    sanitized_uuid_list = uuid_list.
+      collect { |uuid| sanitize(uuid) }.join(', ')
+    or_references_me = ''
+    if self == Link and user
+      or_references_me = "OR (#{table_name}.link_class in (#{sanitize 'permission'}, #{sanitize 'resources'}) AND #{sanitize user.uuid} IN (#{table_name}.head_uuid, #{table_name}.tail_uuid))"
     end
+    joins("LEFT JOIN links permissions ON permissions.head_uuid in (#{table_name}.owner_uuid, #{table_name}.uuid) AND permissions.tail_uuid in (#{sanitized_uuid_list}) AND permissions.link_class='permission'").
+      where("?=? OR #{table_name}.owner_uuid in (?) OR #{table_name}.uuid=? OR permissions.head_uuid IS NOT NULL #{or_references_me}",
+            true, user.is_admin,
+            uuid_list,
+            user.uuid)
+  end
+
+  def logged_attributes
+    attributes
   end
 
   protected
@@ -106,12 +150,12 @@ class ArvadosModel < ActiveRecord::Base
   end
 
   def maybe_update_modified_by_fields
-    update_modified_by_fields if self.changed?
+    update_modified_by_fields if self.changed? or self.new_record?
   end
 
   def update_modified_by_fields
-    self.created_at ||= Time.now
-    self.owner_uuid ||= current_default_owner
+    self.updated_at = Time.now
+    self.owner_uuid ||= current_default_owner if self.respond_to? :owner_uuid=
     self.modified_at = Time.now
     self.modified_by_user_uuid = current_user ? current_user.uuid : nil
     self.modified_by_client_uuid = current_api_client ? current_api_client.uuid : nil
@@ -132,4 +176,146 @@ class ArvadosModel < ActiveRecord::Base
       end
     end
   end
+
+  def foreign_key_attributes
+    attributes.keys.select { |a| a.match /_uuid$/ }
+  end
+
+  def skip_uuid_read_permission_check
+    %w(modified_by_client_uuid)
+  end
+
+  def skip_uuid_existence_check
+    []
+  end
+
+  def normalize_collection_uuids
+    foreign_key_attributes.each do |attr|
+      attr_value = send attr
+      if attr_value.is_a? String and
+          attr_value.match /^[0-9a-f]{32,}(\+[@\w]+)*$/
+        begin
+          send "#{attr}=", Collection.normalize_uuid(attr_value)
+        rescue
+          # TODO: abort instead of silently accepting unnormalizable value?
+        end
+      end
+    end
+  end
+
+  @@UUID_REGEX = /^[0-9a-z]{5}-([0-9a-z]{5})-[0-9a-z]{15}$/
+
+  @@prefixes_hash = nil
+  def self.uuid_prefixes
+    unless @@prefixes_hash
+      @@prefixes_hash = {}
+      ActiveRecord::Base.descendants.reject(&:abstract_class?).each do |k|
+        if k.respond_to?(:uuid_prefix)
+          @@prefixes_hash[k.uuid_prefix] = k
+        end
+      end
+    end
+    @@prefixes_hash
+  end
+
+  def self.uuid_like_pattern
+    "_____-#{uuid_prefix}-_______________"
+  end
+
+  def ensure_valid_uuids
+    specials = [system_user_uuid, 'd41d8cd98f00b204e9800998ecf8427e+0']
+
+    foreign_key_attributes.each do |attr|
+      if new_record? or send (attr + "_changed?")
+        next if skip_uuid_existence_check.include? attr
+        attr_value = send attr
+        next if specials.include? attr_value
+        if attr_value
+          if (r = ArvadosModel::resource_class_for_uuid attr_value)
+            unless skip_uuid_read_permission_check.include? attr
+              r = r.readable_by(current_user)
+            end
+            if r.where(uuid: attr_value).count == 0
+              errors.add(attr, "'#{attr_value}' not found")
+            end
+          end
+        end
+      end
+    end
+  end
+
+  class Email
+    def self.kind
+      "email"
+    end
+
+    def kind
+      self.class.kind
+    end
+
+    def self.readable_by (u)
+      self
+    end
+
+    def self.where (u)
+      [{:uuid => u[:uuid]}]
+    end
+  end
+
+  def self.resource_class_for_uuid(uuid)
+    if uuid.is_a? ArvadosModel
+      return uuid.class
+    end
+    unless uuid.is_a? String
+      return nil
+    end
+    if uuid.match /^[0-9a-f]{32}(\+[^,]+)*(,[0-9a-f]{32}(\+[^,]+)*)*$/
+      return Collection
+    end
+    resource_class = nil
+
+    Rails.application.eager_load!
+    uuid.match @@UUID_REGEX do |re|
+      return uuid_prefixes[re[1]] if uuid_prefixes[re[1]]
+    end
+
+    if uuid.match /.+@.+/
+      return Email
+    end
+
+    nil
+  end
+
+  def log_start_state
+    @old_etag = etag
+    @old_attributes = logged_attributes
+  end
+
+  def log_change(event_type)
+    log = Log.new(event_type: event_type).fill_object(self)
+    yield log
+    log.save!
+    log_start_state
+  end
+
+  def log_create
+    log_change('create') do |log|
+      log.fill_properties('old', nil, nil)
+      log.update_to self
+    end
+  end
+
+  def log_update
+    log_change('update') do |log|
+      log.fill_properties('old', @old_etag, @old_attributes)
+      log.update_to self
+    end
+  end
+
+  def log_destroy
+    log_change('destroy') do |log|
+      log.fill_properties('old', @old_etag, @old_attributes)
+      log.update_to nil
+    end
+  end
 end