Class: Rack::Cors
- Inherits:
-
Object
show all
- Defined in:
- lib/rack/cors.rb,
lib/rack/cors/version.rb
Defined Under Namespace
Classes: Resource, Resources, Result
Constant Summary
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- ENV_KEY =
'X_RACK_CORS'.freeze
'HTTP_ORIGIN'.freeze
'PATH_INFO'.freeze
- VERSION =
"0.3.0"
Instance Method Summary
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Constructor Details
#initialize(app, opts = {}, &block) ⇒ Cors
Returns a new instance of Cors.
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# File 'lib/rack/cors.rb', line 10
def initialize(app, opts={}, &block)
@app = app
@debug_mode = !!opts[:debug]
if logger = opts[:logger]
if logger.respond_to? :call
@logger_proc = opts[:logger]
else
@logger = logger
end
end
if block_given?
if block.arity == 1
block.call(self)
else
instance_eval(&block)
end
end
end
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Instance Method Details
#allow(&block) ⇒ Object
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# File 'lib/rack/cors.rb', line 35
def allow(&block)
all_resources << (resources = Resources.new)
if block.arity == 1
block.call(resources)
else
resources.instance_eval(&block)
end
end
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#call(env) ⇒ Object
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# File 'lib/rack/cors.rb', line 45
def call(env)
env[ORIGIN_HEADER_KEY] ||= env['HTTP_X_ORIGIN']
= nil
if env[ORIGIN_HEADER_KEY]
debug(env) do
[ 'Incoming Headers:',
" Origin: #{env[ORIGIN_HEADER_KEY]}",
" Access-Control-Request-Method: #{env['HTTP_ACCESS_CONTROL_REQUEST_METHOD']}",
" Access-Control-Request-Headers: #{env['HTTP_ACCESS_CONTROL_REQUEST_HEADERS']}"
].join("\n")
end
if env['REQUEST_METHOD'] == 'OPTIONS' and env['HTTP_ACCESS_CONTROL_REQUEST_METHOD']
if = process_preflight(env)
debug(env) do
"Preflight Headers:\n" +
.collect{|kv| " #{kv.join(': ')}"}.join("\n")
end
return [200, , []]
end
else
= process_cors(env)
end
else
Result.miss(env, Result::MISS_NO_ORIGIN)
end
status, , body = @app.call env
if
= .merge()
unless ['Access-Control-Allow-Origin'] == '*'
vary = ['Vary']
['Vary'] = ((vary ? vary.split(/,\s*/) : []) + ['Origin']).uniq.join(', ')
end
end
if debug? && result = env[ENV_KEY]
result.()
end
[status, , body]
end
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#debug? ⇒ Boolean
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# File 'lib/rack/cors.rb', line 31
def debug?
@debug_mode
end
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