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tag: v3.1.4.rc1
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require 'active_support/core_ext/object/blank'
require 'active_support/core_ext/hash/keys'
require 'active_support/core_ext/object/duplicable'
module ActionDispatch
module Http
# Allows you to specify sensitive parameters which will be replaced from
# the request log by looking in the query string of the request and all
# subhashes of the params hash to filter. If a block is given, each key and
# value of the params hash and all subhashes is passed to it, the value
# or key can be replaced using String#replace or similar method.
#
# Examples:
#
# env["action_dispatch.parameter_filter"] = [:password]
# => replaces the value to all keys matching /password/i with "[FILTERED]"
#
# env["action_dispatch.parameter_filter"] = [:foo, "bar"]
# => replaces the value to all keys matching /foo|bar/i with "[FILTERED]"
#
# env["action_dispatch.parameter_filter"] = lambda do |k,v|
# v.reverse! if k =~ /secret/i
# end
# => reverses the value to all keys matching /secret/i
#
module FilterParameters
extend ActiveSupport::Concern
@@parameter_filter_for = {}
# Return a hash of parameters with all sensitive data replaced.
def filtered_parameters
@filtered_parameters ||= parameter_filter.filter(parameters)
end
# Return a hash of request.env with all sensitive data replaced.
def filtered_env
@filtered_env ||= env_filter.filter(@env)
end
# Reconstructed a path with all sensitive GET parameters replaced.
def filtered_path
@filtered_path ||= query_string.empty? ? path : "#{path}?#{filtered_query_string}"
end
protected
def parameter_filter
parameter_filter_for(@env["action_dispatch.parameter_filter"])
end
def env_filter
parameter_filter_for(Array.wrap(@env["action_dispatch.parameter_filter"]) << /RAW_POST_DATA/)
end
def parameter_filter_for(filters)
@@parameter_filter_for[filters] ||= ParameterFilter.new(filters)
end
KV_RE = '[^&;=]+'
PAIR_RE = %r{(#{KV_RE})=(#{KV_RE})}
def filtered_query_string
query_string.gsub(PAIR_RE) do |_|
parameter_filter.filter([[$1, $2]]).first.join("=")
end
end
end
end
end
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