Split ProxyResolver into two interfaces:...

net/proxy/proxy_config_service_win.cc

 // Copyright (c) 2006-2008 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.
 
-#include "net/proxy/proxy_resolver_winhttp.h"
+#include "net/proxy/proxy_config_service_win.h"
 
 #include <windows.h>
 #include <winhttp.h>
 
-#include "base/histogram.h"
 #include "base/string_tokenizer.h"
 #include "net/base/net_errors.h"
 
 #pragma comment(lib, "winhttp.lib")
 
-using base::TimeDelta;
-using base::TimeTicks;
-
 namespace net {
 
-// A small wrapper for histogramming purposes ;-)
-static BOOL CallWinHttpGetProxyForUrl(HINTERNET session, LPCWSTR url,
-                                      WINHTTP_AUTOPROXY_OPTIONS* options,
-                                      WINHTTP_PROXY_INFO* results) {
-  TimeTicks time_start = TimeTicks::Now();
-  BOOL rv = WinHttpGetProxyForUrl(session, url, options, results);
-  TimeDelta time_delta = TimeTicks::Now() - time_start;
-  // Record separately success and failure times since they will have very
-  // different characteristics.
-  if (rv) {
-    UMA_HISTOGRAM_LONG_TIMES(L"Net.GetProxyForUrl_OK", time_delta);
-  } else {
-    UMA_HISTOGRAM_LONG_TIMES(L"Net.GetProxyForUrl_FAIL", time_delta);
-  }
-  return rv;
-}
-
 static void FreeConfig(WINHTTP_CURRENT_USER_IE_PROXY_CONFIG* config) {
   if (config->lpszAutoConfigUrl)
     GlobalFree(config->lpszAutoConfigUrl);
   if (config->lpszProxy)
     GlobalFree(config->lpszProxy);
   if (config->lpszProxyBypass)
     GlobalFree(config->lpszProxyBypass);
 }
 
-static void FreeInfo(WINHTTP_PROXY_INFO* info) {
-  if (info->lpszProxy)
-    GlobalFree(info->lpszProxy);
-  if (info->lpszProxyBypass)
-    GlobalFree(info->lpszProxyBypass);
-}
-
-ProxyResolverWinHttp::ProxyResolverWinHttp()
-    : session_handle_(NULL) {
-}
-
-ProxyResolverWinHttp::~ProxyResolverWinHttp() {
-  CloseWinHttpSession();
-}
-
-int ProxyResolverWinHttp::GetProxyConfig(ProxyConfig* config) {
+int ProxyConfigServiceWin::GetProxyConfig(ProxyConfig* config) {
   WINHTTP_CURRENT_USER_IE_PROXY_CONFIG ie_config = {0};
   if (!WinHttpGetIEProxyConfigForCurrentUser(&ie_config)) {
     LOG(ERROR) << "WinHttpGetIEProxyConfigForCurrentUser failed: " <<
         GetLastError();
     return ERR_FAILED;  // TODO(darin): Bug 1189288: translate error code.
   }
 
   if (ie_config.fAutoDetect)
     config->auto_detect = true;
   if (ie_config.lpszProxy)
@@ skipping 10 matching lines @@
         config->proxy_bypass.push_back(bypass_url_domain);
     }
   }
   if (ie_config.lpszAutoConfigUrl)
     config->pac_url = GURL(ie_config.lpszAutoConfigUrl);
 
   FreeConfig(&ie_config);
   return OK;
 }
 
-int ProxyResolverWinHttp::GetProxyForURL(const GURL& query_url,
-                                         const GURL& pac_url,
-                                         ProxyInfo* results) {
-  // If we don't have a WinHTTP session, then create a new one.
-  if (!session_handle_ && !OpenWinHttpSession())
-    return ERR_FAILED;
-
-  // If we have been given an empty PAC url, then use auto-detection.
-  //
-  // NOTE: We just use DNS-based auto-detection here like Firefox.  We do this
-  // to avoid WinHTTP's auto-detection code, which while more featureful (it
-  // supports DHCP based auto-detection) also appears to have issues.
-  //
-  WINHTTP_AUTOPROXY_OPTIONS options = {0};
-  options.fAutoLogonIfChallenged = FALSE;
-  options.dwFlags = WINHTTP_AUTOPROXY_CONFIG_URL;
-  std::wstring pac_url_wide = ASCIIToWide(pac_url.spec());
-  options.lpszAutoConfigUrl =
-      pac_url_wide.empty() ? L"http://wpad/wpad.dat" : pac_url_wide.c_str();
-
-  WINHTTP_PROXY_INFO info = {0};
-  DCHECK(session_handle_);
-
-  // Per http://msdn.microsoft.com/en-us/library/aa383153(VS.85).aspx, it is
-  // necessary to first try resolving with fAutoLogonIfChallenged set to false.
-  // Otherwise, we fail over to trying it with a value of true.  This way we
-  // get good performance in the case where WinHTTP uses an out-of-process
-  // resolver.  This is important for Vista and Win2k3.
-  BOOL ok = CallWinHttpGetProxyForUrl(
-      session_handle_, ASCIIToWide(query_url.spec()).c_str(), &options, &info);
-  if (!ok) {
-    if (ERROR_WINHTTP_LOGIN_FAILURE == GetLastError()) {
-      options.fAutoLogonIfChallenged = TRUE;
-      ok = CallWinHttpGetProxyForUrl(
-          session_handle_, ASCIIToWide(query_url.spec()).c_str(),
-          &options, &info);
-    }
-    if (!ok) {
-      DWORD error = GetLastError();
-      LOG(ERROR) << "WinHttpGetProxyForUrl failed: " << error;
-      // If we got here because of RPC timeout during out of process PAC
-      // resolution, no further requests on this session are going to work.
-      if (ERROR_WINHTTP_TIMEOUT == error ||
-          ERROR_WINHTTP_AUTO_PROXY_SERVICE_ERROR == error) {
-        CloseWinHttpSession();
-      }
-      return ERR_FAILED;  // TODO(darin): Bug 1189288: translate error code.
-    }
-  }
-
-  int rv = OK;
-
-  switch (info.dwAccessType) {
-    case WINHTTP_ACCESS_TYPE_NO_PROXY:
-      results->UseDirect();
-      break;
-    case WINHTTP_ACCESS_TYPE_NAMED_PROXY:
-      results->UseNamedProxy(WideToASCII(info.lpszProxy));
-      break;
-    default:
-      NOTREACHED();
-      rv = ERR_FAILED;
-  }
-
-  FreeInfo(&info);
-  return rv;
-}
-
-bool ProxyResolverWinHttp::OpenWinHttpSession() {
-  DCHECK(!session_handle_);
-  session_handle_ = WinHttpOpen(NULL,
-                                WINHTTP_ACCESS_TYPE_NO_PROXY,
-                                WINHTTP_NO_PROXY_NAME,
-                                WINHTTP_NO_PROXY_BYPASS,
-                                0);
-  if (!session_handle_)
-    return false;
-
-  // Since this session handle will never be used for WinHTTP connections,
-  // these timeouts don't really mean much individually.  However, WinHTTP's
-  // out of process PAC resolution will use a combined (sum of all timeouts)
-  // value to wait for an RPC reply.
-  BOOL rv = WinHttpSetTimeouts(session_handle_, 10000, 10000, 5000, 5000);
-  DCHECK(rv);
-
-  return true;
-}
-
-void ProxyResolverWinHttp::CloseWinHttpSession() {
-  if (session_handle_) {
-    WinHttpCloseHandle(session_handle_);
-    session_handle_ = NULL;
-  }
-}
-
 }  // namespace net