Call OnBeforePluginLoad when building the plugin list (issue #1708)

2025-06-05 21:39:12 +02:00 · 2015-09-25 14:59:30 +03:00
parent a33720558e
commit 4149192d81
23 changed files with 421 additions and 161 deletions
--- a/libcef/browser/plugins/plugin_service_filter.cc
+++ b/libcef/browser/plugins/plugin_service_filter.cc
@ -0,0 +1,106 @@
+// Copyright (c) 2015 The Chromium Embedded Framework 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 "libcef/browser/plugins/plugin_service_filter.h"
+
+#include "include/cef_request_context_handler.h"
+#include "libcef/browser/browser_host_impl.h"
+#include "libcef/browser/resource_context.h"
+#include "libcef/browser/thread_util.h"
+#include "libcef/browser/web_plugin_impl.h"
+#include "libcef/common/cef_messages.h"
+#include "libcef/common/content_client.h"
+
+CefPluginServiceFilter::CefPluginServiceFilter() {
+}
+
+bool CefPluginServiceFilter::IsPluginAvailable(
+    int render_process_id,
+    int render_frame_id,
+    const void* context,
+    const GURL& url,
+    const GURL& policy_url,
+    content::WebPluginInfo* plugin) {
+  CefRefPtr<CefRequestContextHandler> handler =
+      reinterpret_cast<const CefResourceContext*>(context)->GetHandler();
+
+  CefViewHostMsg_GetPluginInfo_Status status =
+      CefViewHostMsg_GetPluginInfo_Status::kAllowed;
+  return IsPluginAvailable(handler.get(), url, policy_url, plugin, &status);
+}
+
+bool CefPluginServiceFilter::CanLoadPlugin(int render_process_id,
+                                           const base::FilePath& path) {
+  return true;
+}
+
+bool CefPluginServiceFilter::IsPluginAvailable(
+    CefRequestContextHandler* handler,
+    const GURL& url,
+    const GURL& policy_url,
+    content::WebPluginInfo* plugin,
+    CefViewHostMsg_GetPluginInfo_Status* status) {
+  if (*status == CefViewHostMsg_GetPluginInfo_Status::kNotFound ||
+      *status == CefViewHostMsg_GetPluginInfo_Status::kNPAPINotSupported) {
+    // The plugin does not exist so no need to query the handler.
+    return false;
+  }
+
+  if (plugin->path == CefString(CefContentClient::kPDFPluginPath)) {
+    // Always allow the internal PDF plugin to load.
+    *status = CefViewHostMsg_GetPluginInfo_Status::kAllowed;
+    return true;
+  }
+
+  if (handler) {
+    CefRefPtr<CefWebPluginInfoImpl> pluginInfo(
+        new CefWebPluginInfoImpl(*plugin));
+
+    cef_plugin_policy_t plugin_policy = PLUGIN_POLICY_ALLOW;
+    switch (*status) {
+      case CefViewHostMsg_GetPluginInfo_Status::kAllowed:
+        plugin_policy = PLUGIN_POLICY_ALLOW;
+        break;
+      case CefViewHostMsg_GetPluginInfo_Status::kBlocked:
+      case CefViewHostMsg_GetPluginInfo_Status::kBlockedByPolicy:
+      case CefViewHostMsg_GetPluginInfo_Status::kOutdatedBlocked:
+      case CefViewHostMsg_GetPluginInfo_Status::kOutdatedDisallowed:
+      case CefViewHostMsg_GetPluginInfo_Status::kUnauthorized:
+        plugin_policy = PLUGIN_POLICY_BLOCK;
+        break;
+      case CefViewHostMsg_GetPluginInfo_Status::kDisabled:
+        plugin_policy = PLUGIN_POLICY_DISABLE;
+        break;
+      case CefViewHostMsg_GetPluginInfo_Status::kPlayImportantContent:
+        plugin_policy = PLUGIN_POLICY_DETECT_IMPORTANT;
+        break;
+      default:
+        NOTREACHED();
+        break;
+    }
+
+    if (handler->OnBeforePluginLoad(plugin->mime_types[0].mime_type,
+                                    url.possibly_invalid_spec(),
+                                    policy_url.possibly_invalid_spec(),
+                                    pluginInfo.get(),
+                                    &plugin_policy)) {
+      switch (plugin_policy) {
+        case PLUGIN_POLICY_ALLOW:
+          *status = CefViewHostMsg_GetPluginInfo_Status::kAllowed;
+          break;
+        case PLUGIN_POLICY_DETECT_IMPORTANT:
+          *status = CefViewHostMsg_GetPluginInfo_Status::kPlayImportantContent;
+          break;
+        case PLUGIN_POLICY_BLOCK:
+          *status = CefViewHostMsg_GetPluginInfo_Status::kBlocked;
+          break;
+        case PLUGIN_POLICY_DISABLE:
+          *status = CefViewHostMsg_GetPluginInfo_Status::kDisabled;
+          break;
+      }
+    }
+  }
+
+  return (*status != CefViewHostMsg_GetPluginInfo_Status::kDisabled);
+}