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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 "base/strings/string_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/base/mime_sniffer.h"
#include "net/base/mime_util.h"
#include "net/http/http_response_headers.h"
#include "net/url_request/redirect_info.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),
content_length_(0),
read_buffer_(NULL),
resource_buffer_(NULL),
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_ = net::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 kReadBufSize = 32768;
// TODO(gauravsh): Should we use 'min_size' here?
DCHECK(buf && buf_size);
if (!read_buffer_.get()) {
read_buffer_ = new net::IOBuffer(kReadBufSize);
}
*buf = read_buffer_.get();
*buf_size = kReadBufSize;
return true;
}
bool CertificateResourceHandler::OnReadCompleted(int bytes_read, bool* defer) {
if (!bytes_read)
return true;
// We have more data to read.
DCHECK(read_buffer_.get());
content_length_ += bytes_read;
// Release the ownership of the buffer, and store a reference
// to it. A new one will be allocated in OnWillRead().
scoped_refptr<net::IOBuffer> buffer;
read_buffer_.swap(buffer);
// TODO(gauravsh): Should this be handled by a separate thread?
buffer_.push_back(std::make_pair(buffer, 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;
AssembleResource();
const void* content_bytes = NULL;
if (resource_buffer_.get())
content_bytes = resource_buffer_->data();
// 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_, content_bytes, content_length_,
info->GetChildID(), info->GetRenderFrameID());
}
void CertificateResourceHandler::AssembleResource() {
// 0-length IOBuffers are not allowed.
if (content_length_ == 0) {
resource_buffer_ = NULL;
return;
}
// Create the new buffer.
resource_buffer_ = new net::IOBuffer(content_length_);
// Copy the data into it.
size_t bytes_copied = 0;
for (size_t i = 0; i < buffer_.size(); ++i) {
net::IOBuffer* data = buffer_[i].first.get();
size_t data_len = buffer_[i].second;
DCHECK(data != NULL);
DCHECK_LE(bytes_copied + data_len, content_length_);
memcpy(resource_buffer_->data() + bytes_copied, data->data(), data_len);
bytes_copied += data_len;
}
DCHECK_EQ(content_length_, bytes_copied);
}
void CertificateResourceHandler::OnDataDownloaded(int bytes_downloaded) {
NOTREACHED();
}
} // namespace content
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