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Add is_main_frame argument to CefRequestContextHandler::OnBeforePluginLoad (issue #2015)

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This commit is contained in:
Marshall Greenblatt
2017-01-18 18:37:56 -05:00
parent b7b145fa4f
commit 41a02dbe08
20 changed files with 750 additions and 169 deletions
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146
libcef/browser/plugins/plugin_service_filter.cc
View File

@ -22,27 +22,37 @@ bool CefPluginServiceFilter::IsPluginAvailable(
int render_frame_id,
const void* context,
const GURL& url,
bool is_main_frame,
const url::Origin& main_frame_origin,
content::WebPluginInfo* plugin) {
CefResourceContext* resource_context = const_cast<CefResourceContext*>(
reinterpret_cast<const CefResourceContext*>(context));
bool allow_load = true;
if (resource_context->HasPluginLoadDecision(render_process_id, plugin->path,
&allow_load)) {
return allow_load;
}
CefRefPtr<CefRequestContextHandler> handler = resource_context->GetHandler();
CefViewHostMsg_GetPluginInfo_Status status =
CefViewHostMsg_GetPluginInfo_Status::kAllowed;
allow_load = IsPluginAvailable(handler.get(), url, main_frame_origin, plugin,
&status);
resource_context->AddPluginLoadDecision(render_process_id, plugin->path,
allow_load);
// Perform origin check here because we're passing an empty origin value to
// IsPluginAvailable() below.
const GURL& policy_url = main_frame_origin.GetURL();
if (!policy_url.is_empty() &&
policy_url.scheme() == extensions::kExtensionScheme) {
// Always allow extension origins to load plugins.
// TODO(extensions): Revisit this decision once CEF supports more than just
// the PDF extension.
return true;
}
return allow_load;
// Blink requires this method to return a consistent value during renderer
// process initialization and page load, so we always call IsPluginAvailable()
// with an empty origin. If we return false then the plugin will not be listed
// in navigator.plugins and navigating to the plugin mime type will trigger
// the download code path. If we return true then individual plugin instance
// loads will be evaluated in CefContentRendererClient::OverrideCreatePlugin,
// which will result in a call to CefPluginInfoMessageFilter::PluginsLoaded to
// retrieve the actual load decision with a non-empty origin. That will
// determine whether the plugin load is allowed or the plugin placeholder is
// displayed.
return IsPluginAvailable(render_process_id, resource_context, url,
is_main_frame, url::Origin(), plugin, &status);
}
bool CefPluginServiceFilter::CanLoadPlugin(int render_process_id,
@ -51,8 +61,10 @@ bool CefPluginServiceFilter::CanLoadPlugin(int render_process_id,
}
bool CefPluginServiceFilter::IsPluginAvailable(
CefRequestContextHandler* handler,
int render_process_id,
CefResourceContext* resource_context,
const GURL& url,
bool is_main_frame,
const url::Origin& main_frame_origin,
content::WebPluginInfo* plugin,
CefViewHostMsg_GetPluginInfo_Status* status) {
@ -78,54 +90,70 @@ bool CefPluginServiceFilter::IsPluginAvailable(
return true;
}
if (handler) {
CefRefPtr<CefWebPluginInfoImpl> pluginInfo(
new CefWebPluginInfoImpl(*plugin));
CefRefPtr<CefRequestContextHandler> handler = resource_context->GetHandler();
if (!handler) {
// No handler so go with the default plugin load decision.
return *status != CefViewHostMsg_GetPluginInfo_Status::kDisabled;
}
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;
}
// Check for a cached plugin load decision.
if (resource_context->HasPluginLoadDecision(
render_process_id, plugin->path,
is_main_frame, main_frame_origin, status)) {
return *status != CefViewHostMsg_GetPluginInfo_Status::kDisabled;
}
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;
}
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(),
is_main_frame,
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);
// Cache the plugin load decision.
resource_context->AddPluginLoadDecision(
render_process_id, plugin->path,
is_main_frame, main_frame_origin, *status);
return *status != CefViewHostMsg_GetPluginInfo_Status::kDisabled;
}