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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/browser/loader/certificate_resource_handler.h"
#include <limits.h>
#include "components/mime_util/mime_util.h"
#include "content/browser/loader/resource_request_info_impl.h"
#include "content/public/browser/content_browser_client.h"
#include "content/public/common/resource_response.h"
#include "net/base/io_buffer.h"
#include "net/url_request/url_request.h"
#include "net/url_request/url_request_status.h"
namespace content {
CertificateResourceHandler::CertificateResourceHandler(net::URLRequest* request)
: ResourceHandler(request),
buffer_(new net::GrowableIOBuffer),
cert_type_(net::CERTIFICATE_MIME_TYPE_UNKNOWN) {
}
CertificateResourceHandler::~CertificateResourceHandler() {
}
bool CertificateResourceHandler::OnUploadProgress(uint64 position,
uint64 size) {
return true;
}
bool CertificateResourceHandler::OnRequestRedirected(
const net::RedirectInfo& redirect_info,
ResourceResponse* resp,
bool* defer) {
return true;
}
bool CertificateResourceHandler::OnResponseStarted(ResourceResponse* resp,
bool* defer) {
cert_type_ =
mime_util::GetCertificateMimeTypeForMimeType(resp->head.mime_type);
return cert_type_ != net::CERTIFICATE_MIME_TYPE_UNKNOWN;
}
bool CertificateResourceHandler::OnWillStart(const GURL& url, bool* defer) {
return true;
}
bool CertificateResourceHandler::OnBeforeNetworkStart(const GURL& url,
bool* defer) {
return true;
}
bool CertificateResourceHandler::OnWillRead(scoped_refptr<net::IOBuffer>* buf,
int* buf_size,
int min_size) {
static const int kInitialBufferSizeInBytes = 32768;
static const int kMaxCertificateSizeInBytes = 1024 * 1024;
// TODO(gauravsh): Should we use 'min_size' here?
DCHECK(buf);
DCHECK(buf_size);
if (buffer_->capacity() == 0) {
buffer_->SetCapacity(kInitialBufferSizeInBytes);
} else if (buffer_->RemainingCapacity() == 0) {
int capacity = buffer_->capacity();
if (capacity >= kMaxCertificateSizeInBytes)
return false;
static_assert(kMaxCertificateSizeInBytes < INT_MAX / 2,
"The size limit ensures the capacity remains in bounds.");
capacity *= 2;
if (capacity > kMaxCertificateSizeInBytes)
capacity = kMaxCertificateSizeInBytes;
buffer_->SetCapacity(capacity);
}
*buf = buffer_.get();
*buf_size = buffer_->RemainingCapacity();
return true;
}
bool CertificateResourceHandler::OnReadCompleted(int bytes_read, bool* defer) {
DCHECK_LE(0, bytes_read);
DCHECK_LE(bytes_read, buffer_->RemainingCapacity());
if (!bytes_read)
return true;
buffer_->set_offset(buffer_->offset() + bytes_read);
return true;
}
void CertificateResourceHandler::OnResponseCompleted(
const net::URLRequestStatus& urs,
const std::string& sec_info,
bool* defer) {
if (urs.status() != net::URLRequestStatus::SUCCESS)
return;
// Note that it's up to the browser to verify that the certificate
// data is well-formed.
const ResourceRequestInfo* info = GetRequestInfo();
GetContentClient()->browser()->AddCertificate(
cert_type_, buffer_->StartOfBuffer(),
static_cast<size_t>(buffer_->offset()), info->GetChildID(),
info->GetRenderFrameID());
}
void CertificateResourceHandler::OnDataDownloaded(int bytes_downloaded) {
NOTREACHED();
}
} // namespace content
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