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// Copyright 2014 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 "third_party/libaddressinput/chromium/chrome_metadata_source.h"
#include "base/logging.h"
#include "base/memory/scoped_ptr.h"
#include "net/base/io_buffer.h"
#include "net/base/load_flags.h"
#include "net/base/net_errors.h"
#include "net/http/http_status_code.h"
#include "net/url_request/url_fetcher.h"
#include "net/url_request/url_fetcher_response_writer.h"
#include "url/gurl.h"
namespace autofill {
namespace {
// A URLFetcherResponseWriter that writes into a provided buffer.
class UnownedStringWriter : public net::URLFetcherResponseWriter {
public:
UnownedStringWriter(std::string* data) : data_(data) {}
virtual ~UnownedStringWriter() {}
virtual int Initialize(const net::CompletionCallback& callback) OVERRIDE {
data_->clear();
return net::OK;
}
virtual int Write(net::IOBuffer* buffer,
int num_bytes,
const net::CompletionCallback& callback) OVERRIDE {
data_->append(buffer->data(), num_bytes);
return num_bytes;
}
virtual int Finish(const net::CompletionCallback& callback) OVERRIDE {
return net::OK;
}
private:
std::string* data_; // weak reference.
DISALLOW_COPY_AND_ASSIGN(UnownedStringWriter);
};
} // namespace
ChromeMetadataSource::ChromeMetadataSource(
const std::string& validation_data_url,
net::URLRequestContextGetter* getter)
: validation_data_url_(validation_data_url),
getter_(getter) {}
ChromeMetadataSource::~ChromeMetadataSource() {
STLDeleteValues(&requests_);
}
void ChromeMetadataSource::Get(const std::string& key,
const Callback& downloaded) const {
const_cast<ChromeMetadataSource*>(this)->Download(key, downloaded);
}
void ChromeMetadataSource::OnURLFetchComplete(const net::URLFetcher* source) {
std::map<const net::URLFetcher*, Request*>::iterator request =
requests_.find(source);
DCHECK(request != requests_.end());
bool ok = source->GetResponseCode() == net::HTTP_OK;
scoped_ptr<std::string> data(new std::string());
if (ok)
data->swap(request->second->data);
request->second->callback(ok, request->second->key, data.release());
delete request->second;
requests_.erase(request);
}
ChromeMetadataSource::Request::Request(const std::string& key,
scoped_ptr<net::URLFetcher> fetcher,
const Callback& callback)
: key(key),
fetcher(fetcher.Pass()),
callback(callback) {}
void ChromeMetadataSource::Download(const std::string& key,
const Callback& downloaded) {
GURL resource(validation_data_url_ + key);
if (!resource.SchemeIsSecure()) {
downloaded(false, key, NULL);
return;
}
scoped_ptr<net::URLFetcher> fetcher(
net::URLFetcher::Create(resource, net::URLFetcher::GET, this));
fetcher->SetLoadFlags(
net::LOAD_DO_NOT_SEND_COOKIES | net::LOAD_DO_NOT_SAVE_COOKIES);
fetcher->SetRequestContext(getter_);
Request* request = new Request(key, fetcher.Pass(), downloaded);
request->fetcher->SaveResponseWithWriter(
scoped_ptr<net::URLFetcherResponseWriter>(
new UnownedStringWriter(&request->data)));
requests_[request->fetcher.get()] = request;
request->fetcher->Start();
}
} // namespace autofill
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