mirror of
https://github.com/klzgrad/naiveproxy.git
synced 2024-12-01 01:36:09 +03:00
108 lines
3.9 KiB
C++
108 lines
3.9 KiB
C++
// 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_PROXY_DHCP_PROXY_SCRIPT_FETCHER_H_
|
|
#define NET_PROXY_DHCP_PROXY_SCRIPT_FETCHER_H_
|
|
|
|
#include "base/compiler_specific.h"
|
|
#include "base/macros.h"
|
|
#include "base/strings/string16.h"
|
|
#include "net/base/completion_callback.h"
|
|
#include "net/base/net_export.h"
|
|
#include "net/proxy/proxy_script_fetcher.h"
|
|
#include "url/gurl.h"
|
|
|
|
namespace net {
|
|
|
|
// Interface for classes that can fetch a proxy script as configured via DHCP.
|
|
//
|
|
// The Fetch method on this interface tries to retrieve the most appropriate
|
|
// PAC script configured via DHCP.
|
|
//
|
|
// Normally there are zero or one DHCP scripts configured, but in the
|
|
// presence of multiple adapters with DHCP enabled, the fetcher resolves
|
|
// which PAC script to use if one or more are available.
|
|
class NET_EXPORT_PRIVATE DhcpProxyScriptFetcher {
|
|
public:
|
|
// Destruction should cancel any outstanding requests.
|
|
virtual ~DhcpProxyScriptFetcher();
|
|
|
|
// Attempts to retrieve the most appropriate PAC script configured via DHCP,
|
|
// and invokes |callback| on completion.
|
|
//
|
|
// Returns OK on success, otherwise the error code. If the return code is
|
|
// ERR_IO_PENDING, then the request completes asynchronously, and |callback|
|
|
// will be invoked later with the final error code.
|
|
//
|
|
// After synchronous or asynchronous completion with a result code of OK,
|
|
// |*utf16_text| is filled with the response. On failure, the result text is
|
|
// an empty string, and the result code is a network error. Some special
|
|
// network errors that may occur are:
|
|
//
|
|
// ERR_PAC_NOT_IN_DHCP -- no script configured in DHCP.
|
|
//
|
|
// The following all indicate there was one or more script configured
|
|
// in DHCP but all failed to download, and the error for the most
|
|
// preferred adapter that had a script configured was what the error
|
|
// code says:
|
|
//
|
|
// ERR_TIMED_OUT -- fetch took too long to complete.
|
|
// ERR_FILE_TOO_BIG -- response body was too large.
|
|
// ERR_PAC_STATUS_NOT_OK -- script failed to download.
|
|
// ERR_NOT_IMPLEMENTED -- script required authentication.
|
|
//
|
|
// If the request is cancelled (either using the "Cancel()" method or by
|
|
// deleting |this|), then no callback is invoked.
|
|
//
|
|
// Only one fetch is allowed to be outstanding at a time.
|
|
virtual int Fetch(base::string16* utf16_text,
|
|
const CompletionCallback& callback) = 0;
|
|
|
|
// Aborts the in-progress fetch (if any).
|
|
virtual void Cancel() = 0;
|
|
|
|
// Fails the in-progress fetch (if any) and future requests will fail
|
|
// immediately. Must be called before the URLRequestContext the fetcher was
|
|
// created with is torn down.
|
|
virtual void OnShutdown() = 0;
|
|
|
|
// After successful completion of |Fetch()|, this will return the URL
|
|
// retrieved from DHCP. It is reset if/when |Fetch()| is called again.
|
|
virtual const GURL& GetPacURL() const = 0;
|
|
|
|
// Intended for unit tests only, so they can test that factories return
|
|
// the right types under given circumstances.
|
|
virtual std::string GetFetcherName() const;
|
|
|
|
protected:
|
|
DhcpProxyScriptFetcher();
|
|
|
|
private:
|
|
DISALLOW_COPY_AND_ASSIGN(DhcpProxyScriptFetcher);
|
|
};
|
|
|
|
// A do-nothing retriever, always returns synchronously with
|
|
// ERR_NOT_IMPLEMENTED result and empty text.
|
|
class NET_EXPORT_PRIVATE DoNothingDhcpProxyScriptFetcher
|
|
: public DhcpProxyScriptFetcher {
|
|
public:
|
|
DoNothingDhcpProxyScriptFetcher();
|
|
~DoNothingDhcpProxyScriptFetcher() override;
|
|
|
|
int Fetch(base::string16* utf16_text,
|
|
const CompletionCallback& callback) override;
|
|
void Cancel() override;
|
|
void OnShutdown() override;
|
|
const GURL& GetPacURL() const override;
|
|
std::string GetFetcherName() const override;
|
|
|
|
private:
|
|
GURL gurl_;
|
|
DISALLOW_COPY_AND_ASSIGN(DoNothingDhcpProxyScriptFetcher);
|
|
};
|
|
|
|
} // namespace net
|
|
|
|
#endif // NET_PROXY_DHCP_PROXY_SCRIPT_FETCHER_H_
|