aboutsummaryrefslogtreecommitdiffstats
path: root/actionpack/test/dispatch/content_security_policy_test.rb
blob: 8a1ac066e873734c7a994234fd930248af3e5d6d (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
# frozen_string_literal: true

require "abstract_unit"

class ContentSecurityPolicyTest < ActiveSupport::TestCase
  def setup
    @policy = ActionDispatch::ContentSecurityPolicy.new
  end

  def test_build
    assert_equal ";", @policy.build

    @policy.script_src :self
    assert_equal "script-src 'self';", @policy.build
  end

  def test_mappings
    @policy.script_src :data
    assert_equal "script-src data:;", @policy.build

    @policy.script_src :mediastream
    assert_equal "script-src mediastream:;", @policy.build

    @policy.script_src :blob
    assert_equal "script-src blob:;", @policy.build

    @policy.script_src :filesystem
    assert_equal "script-src filesystem:;", @policy.build

    @policy.script_src :self
    assert_equal "script-src 'self';", @policy.build

    @policy.script_src :unsafe_inline
    assert_equal "script-src 'unsafe-inline';", @policy.build

    @policy.script_src :unsafe_eval
    assert_equal "script-src 'unsafe-eval';", @policy.build

    @policy.script_src :none
    assert_equal "script-src 'none';", @policy.build

    @policy.script_src :strict_dynamic
    assert_equal "script-src 'strict-dynamic';", @policy.build

    @policy.script_src :none, :report_sample
    assert_equal "script-src 'none' 'report-sample';", @policy.build
  end

  def test_fetch_directives
    @policy.child_src :self
    assert_match %r{child-src 'self'}, @policy.build

    @policy.child_src false
    assert_no_match %r{child-src}, @policy.build

    @policy.connect_src :self
    assert_match %r{connect-src 'self'}, @policy.build

    @policy.connect_src false
    assert_no_match %r{connect-src}, @policy.build

    @policy.default_src :self
    assert_match %r{default-src 'self'}, @policy.build

    @policy.default_src false
    assert_no_match %r{default-src}, @policy.build

    @policy.font_src :self
    assert_match %r{font-src 'self'}, @policy.build

    @policy.font_src false
    assert_no_match %r{font-src}, @policy.build

    @policy.frame_src :self
    assert_match %r{frame-src 'self'}, @policy.build

    @policy.frame_src false
    assert_no_match %r{frame-src}, @policy.build

    @policy.img_src :self
    assert_match %r{img-src 'self'}, @policy.build

    @policy.img_src false
    assert_no_match %r{img-src}, @policy.build

    @policy.manifest_src :self
    assert_match %r{manifest-src 'self'}, @policy.build

    @policy.manifest_src false
    assert_no_match %r{manifest-src}, @policy.build

    @policy.media_src :self
    assert_match %r{media-src 'self'}, @policy.build

    @policy.media_src false
    assert_no_match %r{media-src}, @policy.build

    @policy.object_src :self
    assert_match %r{object-src 'self'}, @policy.build

    @policy.object_src false
    assert_no_match %r{object-src}, @policy.build

    @policy.script_src :self
    assert_match %r{script-src 'self'}, @policy.build

    @policy.script_src false
    assert_no_match %r{script-src}, @policy.build

    @policy.style_src :self
    assert_match %r{style-src 'self'}, @policy.build

    @policy.style_src false
    assert_no_match %r{style-src}, @policy.build

    @policy.worker_src :self
    assert_match %r{worker-src 'self'}, @policy.build

    @policy.worker_src false
    assert_no_match %r{worker-src}, @policy.build
  end

  def test_document_directives
    @policy.base_uri "https://example.com"
    assert_match %r{base-uri https://example\.com;}, @policy.build

    @policy.plugin_types "application/x-shockwave-flash"
    assert_match %r{plugin-types application/x-shockwave-flash;}, @policy.build

    @policy.sandbox
    assert_match %r{sandbox;}, @policy.build

    @policy.sandbox "allow-scripts", "allow-modals"
    assert_match %r{sandbox allow-scripts allow-modals;}, @policy.build

    @policy.sandbox false
    assert_no_match %r{sandbox}, @policy.build
  end

  def test_navigation_directives
    @policy.form_action :self
    assert_match %r{form-action 'self';}, @policy.build

    @policy.frame_ancestors :self
    assert_match %r{frame-ancestors 'self';}, @policy.build
  end

  def test_reporting_directives
    @policy.report_uri "/violations"
    assert_match %r{report-uri /violations;}, @policy.build
  end

  def test_other_directives
    @policy.block_all_mixed_content
    assert_match %r{block-all-mixed-content;}, @policy.build

    @policy.block_all_mixed_content false
    assert_no_match %r{block-all-mixed-content}, @policy.build

    @policy.require_sri_for :script, :style
    assert_match %r{require-sri-for script style;}, @policy.build

    @policy.require_sri_for "script", "style"
    assert_match %r{require-sri-for script style;}, @policy.build

    @policy.require_sri_for
    assert_no_match %r{require-sri-for}, @policy.build

    @policy.upgrade_insecure_requests
    assert_match %r{upgrade-insecure-requests;}, @policy.build

    @policy.upgrade_insecure_requests false
    assert_no_match %r{upgrade-insecure-requests}, @policy.build
  end

  def test_multiple_sources
    @policy.script_src :self, :https
    assert_equal "script-src 'self' https:;", @policy.build
  end

  def test_multiple_directives
    @policy.script_src :self, :https
    @policy.style_src :self, :https
    assert_equal "script-src 'self' https:; style-src 'self' https:;", @policy.build
  end

  def test_dynamic_directives
    request = Struct.new(:host).new("www.example.com")
    controller = Struct.new(:request).new(request)

    @policy.script_src -> { request.host }
    assert_equal "script-src www.example.com;", @policy.build(controller)
  end

  def test_mixed_static_and_dynamic_directives
    @policy.script_src :self, -> { "foo.com" }, "bar.com"
    assert_equal "script-src 'self' foo.com bar.com;", @policy.build(Object.new)
  end

  def test_invalid_directive_source
    exception = assert_raises(ArgumentError) do
      @policy.script_src [:self]
    end

    assert_equal "Invalid content security policy source: [:self]", exception.message
  end

  def test_missing_context_for_dynamic_source
    @policy.script_src -> { request.host }

    exception = assert_raises(RuntimeError) do
      @policy.build
    end

    assert_match %r{\AMissing context for the dynamic content security policy source:}, exception.message
  end

  def test_raises_runtime_error_when_unexpected_source
    @policy.plugin_types [:flash]

    exception = assert_raises(RuntimeError) do
      @policy.build
    end

    assert_match %r{\AUnexpected content security policy source:}, exception.message
  end
end

class ContentSecurityPolicyIntegrationTest < ActionDispatch::IntegrationTest
  class PolicyController < ActionController::Base
    content_security_policy only: :inline do |p|
      p.default_src "https://example.com"
    end

    content_security_policy only: :conditional, if: :condition? do |p|
      p.default_src "https://true.example.com"
    end

    content_security_policy only: :conditional, unless: :condition? do |p|
      p.default_src "https://false.example.com"
    end

    content_security_policy only: :report_only do |p|
      p.report_uri "/violations"
    end

    content_security_policy_report_only only: :report_only

    def index
      head :ok
    end

    def inline
      head :ok
    end

    def conditional
      head :ok
    end

    def report_only
      head :ok
    end

    private
      def condition?
        params[:condition] == "true"
      end
  end

  ROUTES = ActionDispatch::Routing::RouteSet.new
  ROUTES.draw do
    scope module: "content_security_policy_integration_test" do
      get "/", to: "policy#index"
      get "/inline", to: "policy#inline"
      get "/conditional", to: "policy#conditional"
      get "/report-only", to: "policy#report_only"
    end
  end

  POLICY = ActionDispatch::ContentSecurityPolicy.new do |p|
    p.default_src :self
  end

  class PolicyConfigMiddleware
    def initialize(app)
      @app = app
    end

    def call(env)
      env["action_dispatch.content_security_policy"] = POLICY
      env["action_dispatch.content_security_policy_report_only"] = false
      env["action_dispatch.show_exceptions"] = false

      @app.call(env)
    end
  end

  APP = build_app(ROUTES) do |middleware|
    middleware.use PolicyConfigMiddleware
    middleware.use ActionDispatch::ContentSecurityPolicy::Middleware
  end

  def app
    APP
  end

  def test_generates_content_security_policy_header
    get "/"
    assert_policy "default-src 'self';"
  end

  def test_generates_inline_content_security_policy
    get "/inline"
    assert_policy "default-src https://example.com;"
  end

  def test_generates_conditional_content_security_policy
    get "/conditional", params: { condition: "true" }
    assert_policy "default-src https://true.example.com;"

    get "/conditional", params: { condition: "false" }
    assert_policy "default-src https://false.example.com;"
  end

  def test_generates_report_only_content_security_policy
    get "/report-only"
    assert_policy "default-src 'self'; report-uri /violations;", report_only: true
  end

  private

    def env_config
      Rails.application.env_config
    end

    def content_security_policy
      env_config["action_dispatch.content_security_policy"]
    end

    def content_security_policy=(policy)
      env_config["action_dispatch.content_security_policy"] = policy
    end

    def assert_policy(expected, report_only: false)
      assert_response :success

      if report_only
        expected_header = "Content-Security-Policy-Report-Only"
        unexpected_header = "Content-Security-Policy"
      else
        expected_header = "Content-Security-Policy"
        unexpected_header = "Content-Security-Policy-Report-Only"
      end

      assert_nil response.headers[unexpected_header]
      assert_equal expected, response.headers[expected_header]
    end
end