Make handling of Http Authentication thread safe

* Each BHttpAuthentication object is locked on all field accesses,
* They are owned by the BUrlContext and never deleted, so there is no
need for reference-counting them,
* The BUrlContext itself is now reference counted, and all BUrlRequests
hold a reference to it.

This makes sure using the BHttpAuthentication objects from requests is
thread-safe.

headers/os/net/HttpAuthentication.h

@@ -1,13 +1,14 @@
 /*
- * Copyright 2010 Haiku Inc. All rights reserved.
+ * Copyright 2010-2014 Haiku Inc. All rights reserved.
  * Distributed under the terms of the MIT License.
  */
 #ifndef _B_HTTP_AUTHENTICATION_H_
 #define _B_HTTP_AUTHENTICATION_H_
 
 
-#include <Url.h>
+#include <Locker.h>
 #include <String.h>
+#include <Url.h>
 
 // HTTP authentication method
 enum BHttpAuthenticationMethod {
@@ -89,6 +90,8 @@ private:
 			BHttpAuthenticationQop fDigestQop;
 			
 			BString				fAuthorizationString;
+
+	mutable	BLocker				fLock;
 };
 
 #endif // _B_HTTP_AUTHENTICATION_H_

headers/os/net/UrlContext.h

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010 Haiku Inc. All rights reserved.
+ * Copyright 2010-2014 Haiku Inc. All rights reserved.
  * Distributed under the terms of the MIT License.
  */
 #ifndef _B_URL_CONTEXT_H_
@@ -8,15 +8,16 @@
 
 #include <HttpAuthentication.h>
 #include <NetworkCookieJar.h>
+#include <Referenceable.h>
 
 
 namespace BPrivate {
-	template <class key, class value> class HashMap;
+	template <class key, class value> class SynchronizedHashMap;
 	class HashString;
 }
 
 
-class BUrlContext {
+class BUrlContext: public BReferenceable {
 public:
 								BUrlContext();
 								~BUrlContext();
@@ -25,7 +26,7 @@ public:
 			void				SetCookieJar(
 									const BNetworkCookieJar& cookieJar);
 			void				AddAuthentication(const BUrl& url,
-									BHttpAuthentication* const authentication);
+									const BHttpAuthentication& authentication);
 											
 	// Context accessors
 			BNetworkCookieJar&	GetCookieJar();
@@ -33,7 +34,7 @@ public:
 
 private:
 			BNetworkCookieJar	fCookieJar;
-			typedef BPrivate::HashMap<BPrivate::HashString,
+			typedef BPrivate::SynchronizedHashMap<BPrivate::HashString,
 				BHttpAuthentication*> BHttpAuthenticationMap;
 			BHttpAuthenticationMap* fAuthenticationMap;
 };

headers/os/net/UrlRequest.h

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010 Haiku Inc. All rights reserved.
+ * Copyright 2010-2014 Haiku Inc. All rights reserved.
  * Distributed under the terms of the MIT License.
  */
 #ifndef _B_URL_REQUEST_H_
@@ -11,6 +11,7 @@
 #include <UrlProtocolListener.h>
 #include <UrlResult.h>
 #include <OS.h>
+#include <Referenceable.h>
 
 
 class BUrlRequest {
@@ -52,7 +53,7 @@ protected:
 										const char* format, ...);
 protected:
 			BUrl					fUrl;
-			BUrlContext*			fContext;
+			BReference<BUrlContext>	fContext;
 			BUrlProtocolListener*	fListener;
 
 			bool					fQuit;