diff options
Diffstat (limited to 'activerecord/lib/active_record/sanitization.rb')
| -rw-r--r-- | activerecord/lib/active_record/sanitization.rb | 371 |
1 files changed, 183 insertions, 188 deletions
diff --git a/activerecord/lib/active_record/sanitization.rb b/activerecord/lib/active_record/sanitization.rb index a9e1fd0dad..647834b12e 100644 --- a/activerecord/lib/active_record/sanitization.rb +++ b/activerecord/lib/active_record/sanitization.rb @@ -1,220 +1,215 @@ + module ActiveRecord module Sanitization extend ActiveSupport::Concern module ClassMethods - # Used to sanitize objects before they're used in an SQL SELECT statement. - # Delegates to {connection.quote}[rdoc-ref:ConnectionAdapters::Quoting#quote]. - def sanitize(object) # :nodoc: - connection.quote(object) - end - alias_method :quote_value, :sanitize - - protected - - # Accepts an array or string of SQL conditions and sanitizes - # them into a valid SQL fragment for a WHERE clause. - # - # sanitize_sql_for_conditions(["name=? and group_id=?", "foo'bar", 4]) - # # => "name='foo''bar' and group_id=4" - # - # sanitize_sql_for_conditions(["name=:name and group_id=:group_id", name: "foo'bar", group_id: 4]) - # # => "name='foo''bar' and group_id='4'" - # - # sanitize_sql_for_conditions(["name='%s' and group_id='%s'", "foo'bar", 4]) - # # => "name='foo''bar' and group_id='4'" - # - # sanitize_sql_for_conditions("name='foo''bar' and group_id='4'") - # # => "name='foo''bar' and group_id='4'" - def sanitize_sql_for_conditions(condition) - return nil if condition.blank? - - case condition - when Array; sanitize_sql_array(condition) - else condition + private + + # Accepts an array or string of SQL conditions and sanitizes + # them into a valid SQL fragment for a WHERE clause. + # + # sanitize_sql_for_conditions(["name=? and group_id=?", "foo'bar", 4]) + # # => "name='foo''bar' and group_id=4" + # + # sanitize_sql_for_conditions(["name=:name and group_id=:group_id", name: "foo'bar", group_id: 4]) + # # => "name='foo''bar' and group_id='4'" + # + # sanitize_sql_for_conditions(["name='%s' and group_id='%s'", "foo'bar", 4]) + # # => "name='foo''bar' and group_id='4'" + # + # sanitize_sql_for_conditions("name='foo''bar' and group_id='4'") + # # => "name='foo''bar' and group_id='4'" + def sanitize_sql_for_conditions(condition) # :doc: + return nil if condition.blank? + + case condition + when Array; sanitize_sql_array(condition) + else condition + end end - end - alias_method :sanitize_sql, :sanitize_sql_for_conditions - alias_method :sanitize_conditions, :sanitize_sql - - # Accepts an array, hash, or string of SQL conditions and sanitizes - # them into a valid SQL fragment for a SET clause. - # - # sanitize_sql_for_assignment(["name=? and group_id=?", nil, 4]) - # # => "name=NULL and group_id=4" - # - # sanitize_sql_for_assignment(["name=:name and group_id=:group_id", name: nil, group_id: 4]) - # # => "name=NULL and group_id=4" - # - # Post.send(:sanitize_sql_for_assignment, { name: nil, group_id: 4 }) - # # => "`posts`.`name` = NULL, `posts`.`group_id` = 4" - # - # sanitize_sql_for_assignment("name=NULL and group_id='4'") - # # => "name=NULL and group_id='4'" - def sanitize_sql_for_assignment(assignments, default_table_name = self.table_name) - case assignments - when Array; sanitize_sql_array(assignments) - when Hash; sanitize_sql_hash_for_assignment(assignments, default_table_name) - else assignments + alias :sanitize_sql :sanitize_sql_for_conditions + alias :sanitize_conditions :sanitize_sql + deprecate sanitize_conditions: :sanitize_sql + + # Accepts an array, hash, or string of SQL conditions and sanitizes + # them into a valid SQL fragment for a SET clause. + # + # sanitize_sql_for_assignment(["name=? and group_id=?", nil, 4]) + # # => "name=NULL and group_id=4" + # + # sanitize_sql_for_assignment(["name=:name and group_id=:group_id", name: nil, group_id: 4]) + # # => "name=NULL and group_id=4" + # + # Post.send(:sanitize_sql_for_assignment, { name: nil, group_id: 4 }) + # # => "`posts`.`name` = NULL, `posts`.`group_id` = 4" + # + # sanitize_sql_for_assignment("name=NULL and group_id='4'") + # # => "name=NULL and group_id='4'" + def sanitize_sql_for_assignment(assignments, default_table_name = self.table_name) # :doc: + case assignments + when Array; sanitize_sql_array(assignments) + when Hash; sanitize_sql_hash_for_assignment(assignments, default_table_name) + else assignments + end end - end - - # Accepts an array, or string of SQL conditions and sanitizes - # them into a valid SQL fragment for an ORDER clause. - # - # sanitize_sql_for_order(["field(id, ?)", [1,3,2]]) - # # => "field(id, 1,3,2)" - # - # sanitize_sql_for_order("id ASC") - # # => "id ASC" - def sanitize_sql_for_order(condition) - if condition.is_a?(Array) && condition.first.to_s.include?('?') - sanitize_sql_array(condition) - else - condition + + # Accepts an array, or string of SQL conditions and sanitizes + # them into a valid SQL fragment for an ORDER clause. + # + # sanitize_sql_for_order(["field(id, ?)", [1,3,2]]) + # # => "field(id, 1,3,2)" + # + # sanitize_sql_for_order("id ASC") + # # => "id ASC" + def sanitize_sql_for_order(condition) # :doc: + if condition.is_a?(Array) && condition.first.to_s.include?("?") + sanitize_sql_array(condition) + else + condition + end end - end - - # Accepts a hash of SQL conditions and replaces those attributes - # that correspond to a {#composed_of}[rdoc-ref:Aggregations::ClassMethods#composed_of] - # relationship with their expanded aggregate attribute values. - # - # Given: - # - # class Person < ActiveRecord::Base - # composed_of :address, class_name: "Address", - # mapping: [%w(address_street street), %w(address_city city)] - # end - # - # Then: - # - # { address: Address.new("813 abc st.", "chicago") } - # # => { address_street: "813 abc st.", address_city: "chicago" } - def expand_hash_conditions_for_aggregates(attrs) - expanded_attrs = {} - attrs.each do |attr, value| - if aggregation = reflect_on_aggregation(attr.to_sym) - mapping = aggregation.mapping - mapping.each do |field_attr, aggregate_attr| - if mapping.size == 1 && !value.respond_to?(aggregate_attr) - expanded_attrs[field_attr] = value - else - expanded_attrs[field_attr] = value.send(aggregate_attr) + + # Accepts a hash of SQL conditions and replaces those attributes + # that correspond to a {#composed_of}[rdoc-ref:Aggregations::ClassMethods#composed_of] + # relationship with their expanded aggregate attribute values. + # + # Given: + # + # class Person < ActiveRecord::Base + # composed_of :address, class_name: "Address", + # mapping: [%w(address_street street), %w(address_city city)] + # end + # + # Then: + # + # { address: Address.new("813 abc st.", "chicago") } + # # => { address_street: "813 abc st.", address_city: "chicago" } + def expand_hash_conditions_for_aggregates(attrs) # :doc: + expanded_attrs = {} + attrs.each do |attr, value| + if aggregation = reflect_on_aggregation(attr.to_sym) + mapping = aggregation.mapping + mapping.each do |field_attr, aggregate_attr| + if mapping.size == 1 && !value.respond_to?(aggregate_attr) + expanded_attrs[field_attr] = value + else + expanded_attrs[field_attr] = value.send(aggregate_attr) + end end + else + expanded_attrs[attr] = value end - else - expanded_attrs[attr] = value end + expanded_attrs end - expanded_attrs - end - - # Sanitizes a hash of attribute/value pairs into SQL conditions for a SET clause. - # - # sanitize_sql_hash_for_assignment({ status: nil, group_id: 1 }, "posts") - # # => "`posts`.`status` = NULL, `posts`.`group_id` = 1" - def sanitize_sql_hash_for_assignment(attrs, table) - c = connection - attrs.map do |attr, value| - value = type_for_attribute(attr.to_s).serialize(value) - "#{c.quote_table_name_for_assignment(table, attr)} = #{c.quote(value)}" - end.join(', ') - end - - # Sanitizes a +string+ so that it is safe to use within an SQL - # LIKE statement. This method uses +escape_character+ to escape all occurrences of "\", "_" and "%". - # - # sanitize_sql_like("100%") - # # => "100\\%" - # - # sanitize_sql_like("snake_cased_string") - # # => "snake\\_cased\\_string" - # - # sanitize_sql_like("100%", "!") - # # => "100!%" - # - # sanitize_sql_like("snake_cased_string", "!") - # # => "snake!_cased!_string" - def sanitize_sql_like(string, escape_character = "\\") - pattern = Regexp.union(escape_character, "%", "_") - string.gsub(pattern) { |x| [escape_character, x].join } - end - - # Accepts an array of conditions. The array has each value - # sanitized and interpolated into the SQL statement. - # - # sanitize_sql_array(["name=? and group_id=?", "foo'bar", 4]) - # # => "name='foo''bar' and group_id=4" - # - # sanitize_sql_array(["name=:name and group_id=:group_id", name: "foo'bar", group_id: 4]) - # # => "name='foo''bar' and group_id=4" - # - # sanitize_sql_array(["name='%s' and group_id='%s'", "foo'bar", 4]) - # # => "name='foo''bar' and group_id='4'" - def sanitize_sql_array(ary) - statement, *values = ary - if values.first.is_a?(Hash) && statement =~ /:\w+/ - replace_named_bind_variables(statement, values.first) - elsif statement.include?('?') - replace_bind_variables(statement, values) - elsif statement.blank? - statement - else - statement % values.collect { |value| connection.quote_string(value.to_s) } + + # Sanitizes a hash of attribute/value pairs into SQL conditions for a SET clause. + # + # sanitize_sql_hash_for_assignment({ status: nil, group_id: 1 }, "posts") + # # => "`posts`.`status` = NULL, `posts`.`group_id` = 1" + def sanitize_sql_hash_for_assignment(attrs, table) # :doc: + c = connection + attrs.map do |attr, value| + value = type_for_attribute(attr.to_s).serialize(value) + "#{c.quote_table_name_for_assignment(table, attr)} = #{c.quote(value)}" + end.join(", ") + end + + # Sanitizes a +string+ so that it is safe to use within an SQL + # LIKE statement. This method uses +escape_character+ to escape all occurrences of "\", "_" and "%". + # + # sanitize_sql_like("100%") + # # => "100\\%" + # + # sanitize_sql_like("snake_cased_string") + # # => "snake\\_cased\\_string" + # + # sanitize_sql_like("100%", "!") + # # => "100!%" + # + # sanitize_sql_like("snake_cased_string", "!") + # # => "snake!_cased!_string" + def sanitize_sql_like(string, escape_character = "\\") # :doc: + pattern = Regexp.union(escape_character, "%", "_") + string.gsub(pattern) { |x| [escape_character, x].join } end - end - - def replace_bind_variables(statement, values) # :nodoc: - raise_if_bind_arity_mismatch(statement, statement.count('?'), values.size) - bound = values.dup - c = connection - statement.gsub(/\?/) do - replace_bind_variable(bound.shift, c) + + # Accepts an array of conditions. The array has each value + # sanitized and interpolated into the SQL statement. + # + # sanitize_sql_array(["name=? and group_id=?", "foo'bar", 4]) + # # => "name='foo''bar' and group_id=4" + # + # sanitize_sql_array(["name=:name and group_id=:group_id", name: "foo'bar", group_id: 4]) + # # => "name='foo''bar' and group_id=4" + # + # sanitize_sql_array(["name='%s' and group_id='%s'", "foo'bar", 4]) + # # => "name='foo''bar' and group_id='4'" + def sanitize_sql_array(ary) # :doc: + statement, *values = ary + if values.first.is_a?(Hash) && /:\w+/.match?(statement) + replace_named_bind_variables(statement, values.first) + elsif statement.include?("?") + replace_bind_variables(statement, values) + elsif statement.blank? + statement + else + statement % values.collect { |value| connection.quote_string(value.to_s) } + end end - end - def replace_bind_variable(value, c = connection) # :nodoc: - if ActiveRecord::Relation === value - value.to_sql - else - quote_bound_value(value, c) + def replace_bind_variables(statement, values) + raise_if_bind_arity_mismatch(statement, statement.count("?"), values.size) + bound = values.dup + c = connection + statement.gsub(/\?/) do + replace_bind_variable(bound.shift, c) + end end - end - - def replace_named_bind_variables(statement, bind_vars) # :nodoc: - statement.gsub(/(:?):([a-zA-Z]\w*)/) do |match| - if $1 == ':' # skip postgresql casts - match # return the whole match - elsif bind_vars.include?(match = $2.to_sym) - replace_bind_variable(bind_vars[match]) + + def replace_bind_variable(value, c = connection) + if ActiveRecord::Relation === value + value.to_sql else - raise PreparedStatementInvalid, "missing value for :#{match} in #{statement}" + quote_bound_value(value, c) end end - end - def quote_bound_value(value, c = connection) # :nodoc: - if value.respond_to?(:map) && !value.acts_like?(:string) - if value.respond_to?(:empty?) && value.empty? - c.quote(nil) + def replace_named_bind_variables(statement, bind_vars) + statement.gsub(/(:?):([a-zA-Z]\w*)/) do |match| + if $1 == ":" # skip postgresql casts + match # return the whole match + elsif bind_vars.include?(match = $2.to_sym) + replace_bind_variable(bind_vars[match]) + else + raise PreparedStatementInvalid, "missing value for :#{match} in #{statement}" + end + end + end + + def quote_bound_value(value, c = connection) + if value.respond_to?(:map) && !value.acts_like?(:string) + if value.respond_to?(:empty?) && value.empty? + c.quote(nil) + else + value.map { |v| c.quote(v) }.join(",") + end else - value.map { |v| c.quote(v) }.join(',') + c.quote(value) end - else - c.quote(value) end - end - def raise_if_bind_arity_mismatch(statement, expected, provided) # :nodoc: - unless expected == provided - raise PreparedStatementInvalid, "wrong number of bind variables (#{provided} for #{expected}) in: #{statement}" + def raise_if_bind_arity_mismatch(statement, expected, provided) + unless expected == provided + raise PreparedStatementInvalid, "wrong number of bind variables (#{provided} for #{expected}) in: #{statement}" + end end - end end # TODO: Deprecate this def quoted_id # :nodoc: - self.class.quote_value(@attributes[self.class.primary_key].value_for_database) + self.class.connection.quote(@attributes[self.class.primary_key].value_for_database) end end end |