Added SSLHostInfo. Storing of server host info to our standard disk cache.

net/http/disk_cache_based_ssl_host_info.h

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef NET_HTTP_DISK_CACHE_BASED_SSL_HOST_INFO_H_
+#define NET_HTTP_DISK_CACHE_BASED_SSL_HOST_INFO_H_
+
+#include <string>
+
+#include "base/memory/ref_counted.h"
+#include "base/memory/weak_ptr.h"
+#include "base/threading/non_thread_safe.h"
+#include "net/base/completion_callback.h"
+#include "net/disk_cache/disk_cache.h"
+#include "net/socket/ssl_host_info.h"
+
+namespace net {
+
+class HttpCache;
+class IOBuffer;
+struct SSLConfig;
+
+// DiskCacheBasedSSLHostInfo fetches information about an SSL host from our
+// standard disk cache. Since the information is defined to be non-sensitive,
+// it's ok for us to keep it on disk.
+class NET_EXPORT_PRIVATE DiskCacheBasedSSLHostInfo
+    : public SSLHostInfo,
+      public NON_EXPORTED_BASE(base::NonThreadSafe) {
+ public:
+  DiskCacheBasedSSLHostInfo(const std::string& hostname,
+                            const SSLConfig& ssl_config,
+                            CertVerifier* cert_verifier,
+                            HttpCache* http_cache);
+
+  // SSLHostInfo implementation.
+  virtual void Start() OVERRIDE;
+  virtual int WaitForDataReady(const CompletionCallback& callback) OVERRIDE;
+  virtual void Persist() OVERRIDE;
+
+ private:
+  struct CacheOperationDataShim;
+  enum State {
+    GET_BACKEND,
+    GET_BACKEND_COMPLETE,
+    OPEN,
+    OPEN_COMPLETE,
+    READ,
+    READ_COMPLETE,
+    WAIT_FOR_DATA_READY_DONE,
+    CREATE_OR_OPEN,
+    CREATE_OR_OPEN_COMPLETE,
+    WRITE,
+    WRITE_COMPLETE,
+    SET_DONE,
+    NONE,
+  };
+
+  virtual ~DiskCacheBasedSSLHostInfo();
+
+  std::string key() const;
+
+  // The |unused| parameter is a small hack so that we can have the
+  // CacheOperationDataShim object owned by the Callback that is created for
+  // this method.  See comment above CacheOperationDataShim for details.
+  void OnIOComplete(CacheOperationDataShim* unused, int rv);
+
+  int DoLoop(int rv);
+
+  int DoGetBackendComplete(int rv);
+  int DoOpenComplete(int rv);
+  int DoReadComplete(int rv);
+  int DoWriteComplete(int rv);
+  int DoCreateOrOpenComplete(int rv);
+
+  int DoGetBackend();
+  int DoOpen();
+  int DoRead();
+  int DoWrite();
+  int DoCreateOrOpen();
+
+  // DoWaitForDataReadyDone is the terminal state of the read operation.
+  int DoWaitForDataReadyDone();
+
+  // DoSetDone is the terminal state of the write operation.
+  int DoSetDone();
+
+  base::WeakPtrFactory<DiskCacheBasedSSLHostInfo> weak_factory_;
+  CacheOperationDataShim* data_shim_;  // Owned by |io_callback_|.
+  CompletionCallback io_callback_;
+  State state_;
+  bool ready_;
+  bool found_entry_;  // Controls the behavior of DoCreateOrOpen.
+  std::string new_data_;
+  const std::string hostname_;
+  HttpCache* const http_cache_;
+  disk_cache::Backend* backend_;
+  disk_cache::Entry* entry_;
+  CompletionCallback user_callback_;
+  scoped_refptr<IOBuffer> read_buffer_;
+  scoped_refptr<IOBuffer> write_buffer_;
+  std::string data_;
+};
+
+}  // namespace net
+
+#endif  // NET_HTTP_DISK_CACHE_BASED_SSL_HOST_INFO_H_