2009-02-19 Tatsuhiro Tsujikawa <t-tujikawa@users.sourceforge.net>

	Added --http-auth-challenge option.  If it is set to true(by
	default), aria2 sends HTTP authorization header only when it is
	requested by the server. If false is set, then authorization
	header is always sent to the server. This is useful for servers
	that don't respond 401 code when authentication is required.
	There is an exception: if username and password are embedded in
	URI, authorization header is always sent to the server
	regardless of this option.
	* src/AuthConfigFactory.cc
	* src/HttpSkipResponseCommand.cc
	* src/OptionHandlerFactory.cc
	* src/prefs.cc
	* src/prefs.h
	* src/usage_text.h
	* test/AuthConfigFactoryTest.cc
	* test/HttpRequestTest.cc

ChangeLog

@@ -1,3 +1,22 @@
+2009-02-19  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
+
+	Added --http-auth-challenge option.  If it is set to true(by
+	default), aria2 sends HTTP authorization header only when it is
+	requested by the server. If false is set, then authorization
+	header is always sent to the server. This is useful for servers
+	that don't respond 401 code when authentication is required.
+	There is an exception: if username and password are embedded in
+	URI, authorization header is always sent to the server regardless
+	of this option.
+	* src/AuthConfigFactory.cc
+	* src/HttpSkipResponseCommand.cc
+	* src/OptionHandlerFactory.cc
+	* src/prefs.cc
+	* src/prefs.h
+	* src/usage_text.h
+	* test/AuthConfigFactoryTest.cc
+	* test/HttpRequestTest.cc
+
 2009-02-15  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
 
 	* Release 1.2.0

src/AuthConfigFactory.cc

@@ -62,21 +62,27 @@ AuthConfigFactory::createAuthConfig(const RequestHandle& request)
   if(request->getProtocol() == Request::PROTO_HTTP ||
      request->getProtocol() == Request::PROTO_HTTPS) {
 
-    if(!request->getUsername().empty()) {
-      // TODO setting "/" as path. Should we use request->getDir() instead?
-      updateBasicCred(BasicCred(request->getUsername(), request->getPassword(),
-				request->getHost(), "/", true));
-      return createAuthConfig(request->getUsername(), request->getPassword());
-    }
-    std::deque<BasicCred>::const_iterator i =
-      findBasicCred(request->getHost(), request->getDir());
-    if(i == _basicCreds.end()) {
-      return SharedHandle<AuthConfig>();
+    if(_option->getAsBool(PREF_HTTP_AUTH_CHALLENGE)) {
+      if(!request->getUsername().empty()) {
+	// TODO setting "/" as path. Should we use request->getDir() instead?
+	updateBasicCred(BasicCred(request->getUsername(), request->getPassword(),
+				  request->getHost(), "/", true));
+	return createAuthConfig(request->getUsername(), request->getPassword());
+      }
+      std::deque<BasicCred>::const_iterator i =
+	findBasicCred(request->getHost(), request->getDir());
+      if(i == _basicCreds.end()) {
+	return SharedHandle<AuthConfig>();
+      } else {
+	return createAuthConfig((*i)._user, (*i)._password);
+      }
     } else {
-      return createAuthConfig((*i)._user, (*i)._password);
+      if(!request->getUsername().empty()) {
+	return createAuthConfig(request->getUsername(), request->getPassword());
+      } else {
+	return createHttpAuthResolver()->resolveAuthConfig(request->getHost());
+      }
     }
-
-    return createHttpAuthResolver()->resolveAuthConfig(request->getHost());
   } else if(request->getProtocol() == Request::PROTO_FTP) {
     if(!request->getUsername().empty()) {
       return createAuthConfig(request->getUsername(), request->getPassword());

src/HttpSkipResponseCommand.cc

@@ -159,7 +159,8 @@ bool HttpSkipResponseCommand::processResponse()
     return prepareForRetry(_httpResponse->getRetryAfter());
   } else if(_httpResponse->getResponseStatus() >= HttpHeader::S400) {
     if(_httpResponse->getResponseStatus() == HttpHeader::S401) {
-      if(!_httpResponse->getHttpRequest()->authenticationUsed() &&
+      if(e->option->getAsBool(PREF_HTTP_AUTH_CHALLENGE) &&
+	 !_httpResponse->getHttpRequest()->authenticationUsed() &&
 	 e->getAuthConfigFactory()->activateBasicCred
 	 (req->getHost(), req->getDir())) {
 	return prepareForRetry(0);

src/OptionHandlerFactory.cc

@@ -561,6 +561,15 @@ OptionHandlers OptionHandlerFactory::createOptionHandlers()
     op->addTag(TAG_HTTP);
     handlers.push_back(op);
   }
+  {
+    SharedHandle<OptionHandler> op(new BooleanOptionHandler
+				   (PREF_HTTP_AUTH_CHALLENGE,
+				    TEXT_HTTP_AUTH_CHALLENGE,
+				    V_TRUE,
+				    OptionHandler::OPT_ARG));
+    op->addTag(TAG_HTTP);
+    handlers.push_back(op);
+  }
   {
     SharedHandle<OptionHandler> op(new ParameterOptionHandler
 				   (PREF_HTTP_AUTH_SCHEME,

src/prefs.cc

@@ -199,6 +199,8 @@ const std::string PREF_CA_CERTIFICATE("ca-certificate");
 const std::string PREF_CHECK_CERTIFICATE("check-certificate");
 // value: true | false
 const std::string PREF_USE_HEAD("use-head");
+// value: true | false
+const std::string PREF_HTTP_AUTH_CHALLENGE("http-auth-challenge");
 
 /** 
  * Proxy related preferences

src/prefs.h

@@ -203,6 +203,8 @@ extern const std::string PREF_CA_CERTIFICATE;
 extern const std::string PREF_CHECK_CERTIFICATE;
 // value: true | false
 extern const std::string PREF_USE_HEAD;
+// value: true | false
+extern const std::string PREF_HTTP_AUTH_CHALLENGE;
 
 /**;
  * Proxy related preferences

src/usage_text.h

@@ -478,3 +478,11 @@ _(" --bt-external-ip=IPADDRESS   Specify the external IP address to report to a\
   "                              BitTorrent tracker. Although this function is\n"\
   "                              named 'external', it can accept any kind of IP\n"\
   "                              addresses.")
+#define TEXT_HTTP_AUTH_CHALLENGE \
+_(" --http-auth-challenge[=true|false] Send HTTP authorization header only when it\n"\
+  "                              is requested by the server. If false is set, then\n"\
+  "                              authorization header is always sent to the server.\n"\
+  "                              There is an exception: if username and password\n"\
+  "                              are embedded in URI, authorization header is\n"\
+  "                              always sent to the server regardless of this\n"\
+  "                              option.")

test/AuthConfigFactoryTest.cc

@@ -14,12 +14,14 @@ class AuthConfigFactoryTest:public CppUnit::TestFixture {
 
   CPPUNIT_TEST_SUITE(AuthConfigFactoryTest);
   CPPUNIT_TEST(testCreateAuthConfig_http);
+  CPPUNIT_TEST(testCreateAuthConfig_httpNoChallenge);
   CPPUNIT_TEST(testCreateAuthConfig_ftp);
   CPPUNIT_TEST(testUpdateBasicCred);
   CPPUNIT_TEST_SUITE_END();
   
 public:
   void testCreateAuthConfig_http();
+  void testCreateAuthConfig_httpNoChallenge();
   void testCreateAuthConfig_ftp();
   void testUpdateBasicCred();
 };
@@ -34,6 +36,7 @@ void AuthConfigFactoryTest::testCreateAuthConfig_http()
 
   Option option;
   option.put(PREF_NO_NETRC, V_FALSE);
+  option.put(PREF_HTTP_AUTH_CHALLENGE, V_TRUE);
 
   AuthConfigFactory factory(&option);
 
@@ -60,12 +63,11 @@ void AuthConfigFactoryTest::testCreateAuthConfig_http()
 		       factory.createAuthConfig(req)->getAuthText());
 
   // See default token in netrc is ignored.
-  SharedHandle<Request> mirrorReq(new Request());
   req->setUrl("http://mirror/");
 
   CPPUNIT_ASSERT(!factory.activateBasicCred("mirror", "/"));
 
-  CPPUNIT_ASSERT(factory.createAuthConfig(mirrorReq).isNull());
+  CPPUNIT_ASSERT(factory.createAuthConfig(req).isNull());
 
   // with Netrc + user defined
   option.put(PREF_HTTP_USER, "userDefinedUser");
@@ -84,6 +86,52 @@ void AuthConfigFactoryTest::testCreateAuthConfig_http()
 		       factory.createAuthConfig(req)->getAuthText());  
 }
 
+void AuthConfigFactoryTest::testCreateAuthConfig_httpNoChallenge()
+{
+  SharedHandle<Request> req(new Request());
+  req->setUrl("http://localhost/download/aria2-1.0.0.tar.bz2");
+
+  Option option;
+  option.put(PREF_NO_NETRC, V_FALSE);
+
+  AuthConfigFactory factory(&option);
+
+  // without auth info
+  CPPUNIT_ASSERT(factory.createAuthConfig(req).isNull());
+
+  // with Netrc
+  SharedHandle<Netrc> netrc(new Netrc());
+  netrc->addAuthenticator
+    (SharedHandle<Authenticator>(new Authenticator("localhost",
+						   "localhostuser",
+						   "localhostpass",
+						   "localhostacct")));
+  netrc->addAuthenticator
+    (SharedHandle<Authenticator>(new DefaultAuthenticator("default", "defaultpassword", "defaultaccount")));
+  factory.setNetrc(netrc);
+
+  // not activated
+  CPPUNIT_ASSERT_EQUAL(std::string("localhostuser:localhostpass"),
+		       factory.createAuthConfig(req)->getAuthText());
+
+  // See default token in netrc is ignored.
+  req->setUrl("http://mirror/");
+
+  CPPUNIT_ASSERT(factory.createAuthConfig(req).isNull());
+
+  // with Netrc + user defined
+  option.put(PREF_HTTP_USER, "userDefinedUser");
+  option.put(PREF_HTTP_PASSWD, "userDefinedPassword");
+
+  CPPUNIT_ASSERT_EQUAL(std::string("userDefinedUser:userDefinedPassword"),
+		       factory.createAuthConfig(req)->getAuthText());
+
+  // username and password in URI
+  req->setUrl("http://aria2user:aria2password@localhost/download/aria2-1.0.0.tar.bz2");
+  CPPUNIT_ASSERT_EQUAL(std::string("aria2user:aria2password"),
+		       factory.createAuthConfig(req)->getAuthText());  
+}
+
 void AuthConfigFactoryTest::testCreateAuthConfig_ftp()
 {
   SharedHandle<Request> req(new Request());
@@ -128,6 +176,7 @@ void AuthConfigFactoryTest::testUpdateBasicCred()
 {
   Option option;
   option.put(PREF_NO_NETRC, V_FALSE);
+  option.put(PREF_HTTP_AUTH_CHALLENGE, V_TRUE);
 
   AuthConfigFactory factory(&option);
 

test/HttpRequestTest.cc

@@ -41,7 +41,8 @@ private:
 public:
   void setUp()
   {
-    _option.reset(new Option());    
+    _option.reset(new Option());
+    _option->put(PREF_HTTP_AUTH_CHALLENGE, V_TRUE);
     _authConfigFactory.reset(new AuthConfigFactory(_option.get()));
   }