net/http/http_auth_controller_unittest.cc

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "net/http/http_auth_controller.h"
   6
   7 #include "base/strings/utf_string_conversions.h"
   8 #include "net/base/net_errors.h"
   9 #include "net/base/net_log.h"
  10 #include "net/base/test_completion_callback.h"
  11 #include "net/http/http_auth_cache.h"
  12 #include "net/http/http_auth_handler_mock.h"
  13 #include "net/http/http_request_info.h"
  14 #include "net/http/http_response_headers.h"
  15 #include "net/http/http_util.h"
  16 #include "testing/gtest/include/gtest/gtest.h"
  17
  18 namespace net {
  19
  20 namespace {
  21
  22 enum HandlerRunMode {
  23   RUN_HANDLER_SYNC,
  24   RUN_HANDLER_ASYNC
  25 };
  26
  27 enum SchemeState {
  28   SCHEME_IS_DISABLED,
  29   SCHEME_IS_ENABLED
  30 };
  31
  32 scoped_refptr<HttpResponseHeaders> HeadersFromString(const char* string) {
  33   std::string raw_string(string);
  34   std::string headers_string = HttpUtil::AssembleRawHeaders(
  35       raw_string.c_str(), raw_string.length());
  36   scoped_refptr<HttpResponseHeaders> headers(
  37       new HttpResponseHeaders(headers_string));
  38   return headers;
  39 }
  40
  41 // Runs an HttpAuthController with a single round mock auth handler
  42 // that returns |handler_rv| on token generation.  The handler runs in
  43 // async if |run_mode| is RUN_HANDLER_ASYNC.  Upon completion, the
  44 // return value of the controller is tested against
  45 // |expected_controller_rv|.  |scheme_state| indicates whether the
  46 // auth scheme used should be disabled after this run.
  47 void RunSingleRoundAuthTest(HandlerRunMode run_mode,
  48                             int handler_rv,
  49                             int expected_controller_rv,
  50                             SchemeState scheme_state) {
  51   BoundNetLog dummy_log;
  52   HttpAuthCache dummy_auth_cache;
  53
  54   HttpRequestInfo request;
  55   request.method = "GET";
  56   request.url = GURL("http://example.com");
  57
  58   scoped_refptr<HttpResponseHeaders> headers(HeadersFromString(
  59       "HTTP/1.1 407\r\n"
  60       "Proxy-Authenticate: MOCK foo\r\n"
  61       "\r\n"));
  62
  63   HttpAuthHandlerMock::Factory auth_handler_factory;
  64   HttpAuthHandlerMock* auth_handler = new HttpAuthHandlerMock();
  65   auth_handler->SetGenerateExpectation((run_mode == RUN_HANDLER_ASYNC),
  66                                        handler_rv);
  67   auth_handler_factory.AddMockHandler(auth_handler, HttpAuth::AUTH_PROXY);
  68   auth_handler_factory.set_do_init_from_challenge(true);
  69
  70   scoped_refptr<HttpAuthController> controller(
  71       new HttpAuthController(HttpAuth::AUTH_PROXY,
  72                              GURL("http://example.com"),
  73                              &dummy_auth_cache, &auth_handler_factory));
  74   ASSERT_EQ(OK,
  75             controller->HandleAuthChallenge(headers, false, false, dummy_log));
  76   ASSERT_TRUE(controller->HaveAuthHandler());
  77   controller->ResetAuth(AuthCredentials());
  78   EXPECT_TRUE(controller->HaveAuth());
  79
  80   TestCompletionCallback callback;
  81   EXPECT_EQ((run_mode == RUN_HANDLER_ASYNC)? ERR_IO_PENDING:
  82             expected_controller_rv,
  83             controller->MaybeGenerateAuthToken(&request, callback.callback(),
  84                                                dummy_log));
  85   if (run_mode == RUN_HANDLER_ASYNC)
  86     EXPECT_EQ(expected_controller_rv, callback.WaitForResult());
  87   EXPECT_EQ((scheme_state == SCHEME_IS_DISABLED),
  88             controller->IsAuthSchemeDisabled(HttpAuth::AUTH_SCHEME_MOCK));
  89 }
  90
  91 }  // namespace
  92
  93 // If an HttpAuthHandler returns an error code that indicates a
  94 // permanent error, the HttpAuthController should disable the scheme
  95 // used and retry the request.
  96 TEST(HttpAuthControllerTest, PermanentErrors) {
  97
  98   // Run a synchronous handler that returns
  99   // ERR_UNEXPECTED_SECURITY_LIBRARY_STATUS.  We expect a return value
 100   // of OK from the controller so we can retry the request.
 101   RunSingleRoundAuthTest(RUN_HANDLER_SYNC,
 102                          ERR_UNEXPECTED_SECURITY_LIBRARY_STATUS,
 103                          OK, SCHEME_IS_DISABLED);
 104
 105   // Now try an async handler that returns
 106   // ERR_MISSING_AUTH_CREDENTIALS.  Async and sync handlers invoke
 107   // different code paths in HttpAuthController when generating
 108   // tokens.
 109   RunSingleRoundAuthTest(RUN_HANDLER_ASYNC, ERR_MISSING_AUTH_CREDENTIALS, OK,
 110                          SCHEME_IS_DISABLED);
 111
 112   // If a non-permanent error is returned by the handler, then the
 113   // controller should report it unchanged.
 114   RunSingleRoundAuthTest(RUN_HANDLER_ASYNC, ERR_INVALID_AUTH_CREDENTIALS,
 115                          ERR_INVALID_AUTH_CREDENTIALS, SCHEME_IS_ENABLED);
 116 }
 117
 118 // If an HttpAuthHandler indicates that it doesn't allow explicit
 119 // credentials, don't prompt for credentials.
 120 TEST(HttpAuthControllerTest, NoExplicitCredentialsAllowed) {
 121   // Modified mock HttpAuthHandler for this test.
 122   class MockHandler : public HttpAuthHandlerMock {
 123    public:
 124     MockHandler(int expected_rv, HttpAuth::Scheme scheme)
 125         : expected_scheme_(scheme) {
 126       SetGenerateExpectation(false, expected_rv);
 127     }
 128
 129    protected:
 130     virtual bool Init(HttpAuth::ChallengeTokenizer* challenge) OVERRIDE {
 131       HttpAuthHandlerMock::Init(challenge);
 132       set_allows_default_credentials(true);
 133       set_allows_explicit_credentials(false);
 134       set_connection_based(true);
 135       // Pretend to be SCHEME_BASIC so we can test failover logic.
 136       if (challenge->scheme() == "Basic") {
 137         auth_scheme_ = HttpAuth::AUTH_SCHEME_BASIC;
 138         --score_;  // Reduce score, so we rank below Mock.
 139         set_allows_explicit_credentials(true);
 140       }
 141       EXPECT_EQ(expected_scheme_, auth_scheme_);
 142       return true;
 143     }
 144
 145     virtual int GenerateAuthTokenImpl(const AuthCredentials* credentials,
 146                                       const HttpRequestInfo* request,
 147                                       const CompletionCallback& callback,
 148                                       std::string* auth_token) OVERRIDE {
 149       int result =
 150           HttpAuthHandlerMock::GenerateAuthTokenImpl(credentials,
 151                                                      request, callback,
 152                                                      auth_token);
 153       EXPECT_TRUE(result != OK ||
 154                   !AllowsExplicitCredentials() ||
 155                   !credentials->Empty());
 156       return result;
 157     }
 158
 159    private:
 160     HttpAuth::Scheme expected_scheme_;
 161   };
 162
 163   BoundNetLog dummy_log;
 164   HttpAuthCache dummy_auth_cache;
 165   HttpRequestInfo request;
 166   request.method = "GET";
 167   request.url = GURL("http://example.com");
 168
 169   HttpRequestHeaders request_headers;
 170   scoped_refptr<HttpResponseHeaders> headers(HeadersFromString(
 171       "HTTP/1.1 401\r\n"
 172       "WWW-Authenticate: Mock\r\n"
 173       "WWW-Authenticate: Basic\r\n"
 174       "\r\n"));
 175
 176   HttpAuthHandlerMock::Factory auth_handler_factory;
 177
 178   // Handlers for the first attempt at authentication.  AUTH_SCHEME_MOCK handler
 179   // accepts the default identity and successfully constructs a token.
 180   auth_handler_factory.AddMockHandler(
 181       new MockHandler(OK, HttpAuth::AUTH_SCHEME_MOCK), HttpAuth::AUTH_SERVER);
 182   auth_handler_factory.AddMockHandler(
 183       new MockHandler(ERR_UNEXPECTED, HttpAuth::AUTH_SCHEME_BASIC),
 184       HttpAuth::AUTH_SERVER);
 185
 186   // Handlers for the second attempt.  Neither should be used to generate a
 187   // token.  Instead the controller should realize that there are no viable
 188   // identities to use with the AUTH_SCHEME_MOCK handler and fail.
 189   auth_handler_factory.AddMockHandler(
 190       new MockHandler(ERR_UNEXPECTED, HttpAuth::AUTH_SCHEME_MOCK),
 191       HttpAuth::AUTH_SERVER);
 192   auth_handler_factory.AddMockHandler(
 193       new MockHandler(ERR_UNEXPECTED, HttpAuth::AUTH_SCHEME_BASIC),
 194       HttpAuth::AUTH_SERVER);
 195
 196   // Fallback handlers for the second attempt.  The AUTH_SCHEME_MOCK handler
 197   // should be discarded due to the disabled scheme, and the AUTH_SCHEME_BASIC
 198   // handler should successfully be used to generate a token.
 199   auth_handler_factory.AddMockHandler(
 200       new MockHandler(ERR_UNEXPECTED, HttpAuth::AUTH_SCHEME_MOCK),
 201       HttpAuth::AUTH_SERVER);
 202   auth_handler_factory.AddMockHandler(
 203       new MockHandler(OK, HttpAuth::AUTH_SCHEME_BASIC),
 204       HttpAuth::AUTH_SERVER);
 205   auth_handler_factory.set_do_init_from_challenge(true);
 206
 207   scoped_refptr<HttpAuthController> controller(
 208       new HttpAuthController(HttpAuth::AUTH_SERVER,
 209                              GURL("http://example.com"),
 210                              &dummy_auth_cache, &auth_handler_factory));
 211   ASSERT_EQ(OK,
 212             controller->HandleAuthChallenge(headers, false, false, dummy_log));
 213   ASSERT_TRUE(controller->HaveAuthHandler());
 214   controller->ResetAuth(AuthCredentials());
 215   EXPECT_TRUE(controller->HaveAuth());
 216
 217   // Should only succeed if we are using the AUTH_SCHEME_MOCK MockHandler.
 218   EXPECT_EQ(OK, controller->MaybeGenerateAuthToken(
 219       &request, CompletionCallback(), dummy_log));
 220   controller->AddAuthorizationHeader(&request_headers);
 221
 222   // Once a token is generated, simulate the receipt of a server response
 223   // indicating that the authentication attempt was rejected.
 224   ASSERT_EQ(OK,
 225             controller->HandleAuthChallenge(headers, false, false, dummy_log));
 226   ASSERT_TRUE(controller->HaveAuthHandler());
 227   controller->ResetAuth(AuthCredentials(ASCIIToUTF16("Hello"),
 228                         base::string16()));
 229   EXPECT_TRUE(controller->HaveAuth());
 230   EXPECT_TRUE(controller->IsAuthSchemeDisabled(HttpAuth::AUTH_SCHEME_MOCK));
 231   EXPECT_FALSE(controller->IsAuthSchemeDisabled(HttpAuth::AUTH_SCHEME_BASIC));
 232
 233   // Should only succeed if we are using the AUTH_SCHEME_BASIC MockHandler.
 234   EXPECT_EQ(OK, controller->MaybeGenerateAuthToken(
 235       &request, CompletionCallback(), dummy_log));
 236 }
 237
 238 }  // namespace net