Invalidate DRP config on Previews auth failure

Bug: 1011457
Change-Id: I39016ea24cd296b3ed0ed95a2556e7941fdb9390
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1845937Reviewed-by: Tarun Bansal <tbansal@chromium.org>
Commit-Queue: Robert Ogden <robertogden@chromium.org>
Cr-Commit-Position: refs/heads/master@{#703788}

chrome/browser/previews/previews_lite_page_redirect_browsertest.cc

@@ -1340,17 +1340,6 @@ IN_PROC_BROWSER_TEST_P(PreviewsLitePageRedirectServerBrowserTest,
     VerifyPreviewLoaded();
   }
 
-  {
-    // Verify the preview is not triggered when the server responds with 403.
-    base::HistogramTester histogram_tester;
-    ui_test_utils::NavigateToURL(browser(), HttpsLitePageURL(kAuthFailure));
-    VerifyPreviewNotLoaded();
-    ClearDeciderState();
-    histogram_tester.ExpectBucketCount(
-        "Previews.ServerLitePage.ServerResponse",
-        previews::LitePageRedirectServerResponse::kAuthFailure, 1);
-  }
-
   {
     // Verify the preview is not triggered when the server responds with 503.
     base::HistogramTester histogram_tester;
@@ -1363,6 +1352,27 @@ IN_PROC_BROWSER_TEST_P(PreviewsLitePageRedirectServerBrowserTest,
   }
 }
 
+IN_PROC_BROWSER_TEST_P(
+    PreviewsLitePageRedirectServerBrowserTest,
+    DISABLE_ON_WIN_MAC_CHROMESOS(LitePagePreviewsAuthFailure)) {
+  // Verify the preview is not triggered when the server responds with 403.
+  base::HistogramTester histogram_tester;
+  ui_test_utils::NavigateToURL(browser(), HttpsLitePageURL(kAuthFailure));
+  VerifyPreviewNotLoaded();
+  ClearDeciderState();
+  histogram_tester.ExpectBucketCount(
+      "Previews.ServerLitePage.ServerResponse",
+      previews::LitePageRedirectServerResponse::kAuthFailure, 1);
+
+  // DRP config is invalid, a subsequent preview page load should fail.
+  ui_test_utils::NavigateToURL(browser(), HttpsLitePageURL(kSuccess));
+  VerifyPreviewNotLoaded();
+
+  histogram_tester.ExpectBucketCount(
+      "Previews.ServerLitePage.IneligibleReasons",
+      previews::LitePageRedirectIneligibleReason::kInvalidProxyHeaders, 1);
+}
+
 IN_PROC_BROWSER_TEST_P(PreviewsLitePageRedirectServerBrowserTest,
                        DISABLE_ON_WIN_MAC_CHROMESOS(LitePagePreviewsLoadshed)) {
   PreviewsService* previews_service =

chrome/browser/previews/previews_lite_page_redirect_serving_url_loader.cc

@@ -20,11 +20,15 @@
 #include "base/task/task_traits.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/time/time.h"
+#include "chrome/browser/data_reduction_proxy/data_reduction_proxy_chrome_settings.h"
+#include "chrome/browser/data_reduction_proxy/data_reduction_proxy_chrome_settings_factory.h"
 #include "chrome/browser/previews/previews_lite_page_redirect_decider.h"
 #include "chrome/browser/previews/previews_lite_page_redirect_url_loader_interceptor.h"
 #include "chrome/browser/previews/previews_service.h"
 #include "chrome/browser/previews/previews_service_factory.h"
 #include "chrome/browser/profiles/profile.h"
+#include "components/data_reduction_proxy/core/browser/data_reduction_proxy_config_service_client.h"
+#include "components/data_reduction_proxy/core/browser/data_reduction_proxy_service.h"
 #include "components/data_reduction_proxy/core/common/data_reduction_proxy_headers.h"
 #include "components/previews/core/previews_experiments.h"
 #include "components/previews/core/previews_lite_page_redirect.h"
@@ -114,6 +118,35 @@ void ReportDataSavings(int64_t network_bytes,
                      original_bytes, std::move(host), frame_tree_node_id));
 }
 
+void InvalidateDRPConfigOnUIThread(int frame_tree_node_id) {
+  auto* web_contents =
+      content::WebContents::FromFrameTreeNodeId(frame_tree_node_id);
+  // If the WebContents has been closed this may be null.
+  if (!web_contents)
+    return;
+
+  DataReductionProxyChromeSettings* drp_settings =
+      DataReductionProxyChromeSettingsFactory::GetForBrowserContext(
+          web_contents->GetBrowserContext());
+
+  if (!drp_settings)
+    return;
+  if (!drp_settings->data_reduction_proxy_service())
+    return;
+  if (!drp_settings->data_reduction_proxy_service()->config_client())
+    return;
+
+  drp_settings->data_reduction_proxy_service()
+      ->config_client()
+      ->InvalidateAndRetrieveNewConfig();
+}
+
+void InvalidateDRPConfig(int frame_tree_node_id) {
+  base::PostTask(
+      FROM_HERE, {content::BrowserThread::UI, base::TaskPriority::USER_VISIBLE},
+      base::BindOnce(&InvalidateDRPConfigOnUIThread, frame_tree_node_id));
+}
+
 const base::TimeDelta kBlacklistDuration = base::TimeDelta::FromDays(30);
 
 const net::NetworkTrafficAnnotationTag kPreviewsTrafficAnnotation =
@@ -271,6 +304,11 @@ void PreviewsLitePageRedirectServingURLLoader::OnReceiveResponse(
       UMA_HISTOGRAM_ENUMERATION(
           "Previews.ServerLitePage.ServerResponse",
           previews::LitePageRedirectServerResponse::kAuthFailure);
+
+      // This should disable future preview attempts until a new DRP Session Key
+      // is retrieved since the PreviewsLitePageRedirectDecider checks for valid
+      // session keys before triggering the preview.
+      InvalidateDRPConfig(frame_tree_node_id_);
     } else {
       UMA_HISTOGRAM_ENUMERATION(
           "Previews.ServerLitePage.ServerResponse",

components/data_reduction_proxy/core/browser/data_reduction_proxy_config_service_client.cc

@@ -243,6 +243,22 @@ void DataReductionProxyConfigServiceClient::SetEnabled(bool enabled) {
   enabled_ = enabled;
 }
 
+void DataReductionProxyConfigServiceClient::InvalidateAndRetrieveNewConfig() {
+  DCHECK(thread_checker_.CalledOnValidThread());
+
+  InvalidateConfig();
+  DCHECK(config_->GetProxiesForHttp().empty());
+
+  if (fetch_in_progress_) {
+    // If a client config fetch is already in progress, then do not start
+    // another fetch since starting a new fetch will cause extra data
+    // usage, and also cancel the ongoing fetch.
+    return;
+  }
+
+  RetrieveConfig();
+}
+
 void DataReductionProxyConfigServiceClient::RetrieveConfig() {
   DCHECK(thread_checker_.CalledOnValidThread());
   if (!enabled_)

components/data_reduction_proxy/core/browser/data_reduction_proxy_config_service_client.h

@@ -29,7 +29,7 @@ class HttpRequestHeaders;
 class HttpResponseHeaders;
 struct LoadTimingInfo;
 class ProxyServer;
-}
+}  // namespace net
 
 namespace network {
 class SharedURLLoaderFactory;
@@ -106,6 +106,10 @@ class DataReductionProxyConfigServiceClient
   // operation takes place asynchronously.
   void RetrieveConfig();
 
+  // Invalidates the current Data Reduction Proxy configuration and requests the
+  // retrieval of the Data Reduction Proxy configuration
+  void InvalidateAndRetrieveNewConfig();
+
   // Takes a serialized Data Reduction Proxy configuration and sets it as the
   // current Data Reduction Proxy configuration. If a remote configuration has
   // already been retrieved, the remote configuration takes precedence.