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// 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.
#include "content/child/npapi/plugin_stream_url.h"
#include <algorithm>
#include "base/stl_util.h"
#include "base/strings/string_util.h"
#include "content/child/npapi/plugin_host.h"
#include "content/child/npapi/plugin_instance.h"
#include "content/child/npapi/plugin_lib.h"
#include "content/child/npapi/plugin_url_fetcher.h"
#include "content/child/npapi/webplugin.h"
#include "net/http/http_response_headers.h"
namespace content {
PluginStreamUrl::PluginStreamUrl(
unsigned long resource_id,
const GURL &url,
PluginInstance *instance,
bool notify_needed,
void *notify_data)
: PluginStream(instance, url.spec().c_str(), notify_needed, notify_data),
url_(url),
id_(resource_id) {
}
void PluginStreamUrl::SetPluginURLFetcher(PluginURLFetcher* fetcher) {
plugin_url_fetcher_.reset(fetcher);
}
void PluginStreamUrl::URLRedirectResponse(bool allow) {
if (plugin_url_fetcher_.get()) {
plugin_url_fetcher_->URLRedirectResponse(allow);
} else {
instance()->webplugin()->URLRedirectResponse(allow, id_);
}
if (allow)
UpdateUrl(pending_redirect_url_.c_str());
}
void PluginStreamUrl::FetchRange(const std::string& range) {
PluginURLFetcher* range_fetcher = new PluginURLFetcher(
this, url_, plugin_url_fetcher_->first_party_for_cookies(), "GET", NULL,
0, plugin_url_fetcher_->referrer(), range, false, false,
plugin_url_fetcher_->origin_pid(),
plugin_url_fetcher_->render_frame_id(),
plugin_url_fetcher_->render_view_id(), id_,
plugin_url_fetcher_->copy_stream_data());
range_request_fetchers_.push_back(range_fetcher);
}
bool PluginStreamUrl::Close(NPReason reason) {
// Protect the stream against it being destroyed or the whole plugin instance
// being destroyed within the destroy stream handler.
scoped_refptr<PluginStream> protect(this);
CancelRequest();
bool result = PluginStream::Close(reason);
instance()->RemoveStream(this);
return result;
}
WebPluginResourceClient* PluginStreamUrl::AsResourceClient() {
return static_cast<WebPluginResourceClient*>(this);
}
void PluginStreamUrl::CancelRequest() {
if (id_ > 0) {
if (plugin_url_fetcher_.get()) {
plugin_url_fetcher_->Cancel();
} else {
if (instance()->webplugin()) {
instance()->webplugin()->CancelResource(id_);
}
}
id_ = 0;
}
if (instance()->webplugin()) {
for (size_t i = 0; i < range_requests_.size(); ++i)
instance()->webplugin()->CancelResource(range_requests_[i]);
}
range_requests_.clear();
STLDeleteElements(&range_request_fetchers_);
}
void PluginStreamUrl::WillSendRequest(const GURL& url, int http_status_code) {
if (notify_needed()) {
// If the plugin participates in HTTP url redirect handling then notify it.
if (net::HttpResponseHeaders::IsRedirectResponseCode(http_status_code) &&
instance()->handles_url_redirects()) {
pending_redirect_url_ = url.spec();
instance()->NPP_URLRedirectNotify(url.spec().c_str(), http_status_code,
notify_data());
return;
}
}
url_ = url;
UpdateUrl(url.spec().c_str());
}
void PluginStreamUrl::DidReceiveResponse(const std::string& mime_type,
const std::string& headers,
uint32 expected_length,
uint32 last_modified,
bool request_is_seekable) {
// Protect the stream against it being destroyed or the whole plugin instance
// being destroyed within the new stream handler.
scoped_refptr<PluginStream> protect(this);
bool opened = Open(mime_type,
headers,
expected_length,
last_modified,
request_is_seekable);
if (!opened) {
CancelRequest();
instance()->RemoveStream(this);
} else {
SetDeferLoading(false);
}
}
void PluginStreamUrl::DidReceiveData(const char* buffer, int length,
int data_offset) {
if (!open())
return;
// Protect the stream against it being destroyed or the whole plugin instance
// being destroyed within the write handlers
scoped_refptr<PluginStream> protect(this);
if (length > 0) {
// The PluginStreamUrl instance could get deleted if the plugin fails to
// accept data in NPP_Write.
if (Write(const_cast<char*>(buffer), length, data_offset) > 0) {
SetDeferLoading(false);
}
}
}
void PluginStreamUrl::DidFinishLoading(unsigned long resource_id) {
if (!seekable()) {
Close(NPRES_DONE);
} else {
std::vector<unsigned long>::iterator it_resource = std::find(
range_requests_.begin(),
range_requests_.end(),
resource_id);
// Resource id must be known to us - either main resource id, or one
// of the resources, created for range requests.
DCHECK(resource_id == id_ || it_resource != range_requests_.end());
// We should notify the plugin about failed/finished requests to ensure
// that the number of active resource clients does not continue to grow.
if (instance()->webplugin())
instance()->webplugin()->CancelResource(resource_id);
if (it_resource != range_requests_.end())
range_requests_.erase(it_resource);
}
}
void PluginStreamUrl::DidFail(unsigned long resource_id) {
Close(NPRES_NETWORK_ERR);
}
bool PluginStreamUrl::IsMultiByteResponseExpected() {
return seekable();
}
int PluginStreamUrl::ResourceId() {
return id_;
}
PluginStreamUrl::~PluginStreamUrl() {
if (!plugin_url_fetcher_.get() && instance() && instance()->webplugin()) {
instance()->webplugin()->ResourceClientDeleted(AsResourceClient());
}
STLDeleteElements(&range_request_fetchers_);
}
void PluginStreamUrl::AddRangeRequestResourceId(unsigned long resource_id) {
DCHECK_NE(resource_id, 0u);
range_requests_.push_back(resource_id);
}
void PluginStreamUrl::SetDeferLoading(bool value) {
// If we determined that the request had failed via the HTTP headers in the
// response then we send out a failure notification to the plugin process, as
// certain plugins don't handle HTTP failure codes correctly.
if (plugin_url_fetcher_.get()) {
if (!value && plugin_url_fetcher_->pending_failure_notification()) {
// This object may be deleted now.
DidFail(id_);
}
return;
}
if (id_ > 0)
instance()->webplugin()->SetDeferResourceLoading(id_, value);
for (size_t i = 0; i < range_requests_.size(); ++i)
instance()->webplugin()->SetDeferResourceLoading(range_requests_[i],
value);
}
void PluginStreamUrl::UpdateUrl(const char* url) {
DCHECK(!open());
free(const_cast<char*>(stream()->url));
stream()->url = base::strdup(url);
pending_redirect_url_.clear();
}
} // namespace content
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