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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 "cloud_print/service/service_state.h"
#include "base/json/json_reader.h"
#include "base/json/json_writer.h"
#include "base/logging.h"
#include "base/message_loop/message_loop.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "net/base/escape.h"
#include "net/base/io_buffer.h"
#include "net/base/load_flags.h"
#include "net/base/request_priority.h"
#include "net/base/upload_bytes_element_reader.h"
#include "net/base/upload_data_stream.h"
#include "net/url_request/url_request.h"
#include "net/url_request/url_request_context.h"
#include "net/url_request/url_request_context_builder.h"
namespace {
const char kCloudPrintJsonName[] = "cloud_print";
const char kEnabledOptionName[] = "enabled";
const char kEmailOptionName[] = "email";
const char kProxyIdOptionName[] = "proxy_id";
const char kRobotEmailOptionName[] = "robot_email";
const char kRobotTokenOptionName[] = "robot_refresh_token";
const char kAuthTokenOptionName[] = "auth_token";
const char kXmppAuthTokenOptionName[] = "xmpp_auth_token";
const char kClientLoginUrl[] = "https://www.google.com/accounts/ClientLogin";
const int64 kRequestTimeoutMs = 10 * 1000;
class ServiceStateURLRequestDelegate : public net::URLRequest::Delegate {
public:
virtual void OnResponseStarted(net::URLRequest* request) OVERRIDE {
if (request->GetResponseCode() == 200) {
Read(request);
if (request->status().is_io_pending())
return;
}
request->Cancel();
}
virtual void OnReadCompleted(net::URLRequest* request,
int bytes_read) OVERRIDE {
Read(request);
if (!request->status().is_io_pending())
base::MessageLoop::current()->Quit();
}
const std::string& data() const {
return data_;
}
private:
void Read(net::URLRequest* request) {
// Read as many bytes as are available synchronously.
const int kBufSize = 100000;
scoped_refptr<net::IOBuffer> buf(new net::IOBuffer(kBufSize));
int num_bytes = 0;
while (request->Read(buf.get(), kBufSize, &num_bytes)) {
data_.append(buf->data(), buf->data() + num_bytes);
}
}
std::string data_;
};
void SetNotEmptyJsonString(base::DictionaryValue* dictionary,
const std::string& name,
const std::string& value) {
if (!value.empty())
dictionary->SetString(name, value);
}
} // namespace
ServiceState::ServiceState() {
Reset();
}
ServiceState::~ServiceState() {
}
void ServiceState::Reset() {
email_.clear();
proxy_id_.clear();
robot_email_.clear();
robot_token_.clear();
auth_token_.clear();
xmpp_auth_token_.clear();
}
bool ServiceState::FromString(const std::string& json) {
Reset();
scoped_ptr<base::Value> data(base::JSONReader::Read(json));
if (!data.get())
return false;
const base::DictionaryValue* services = NULL;
if (!data->GetAsDictionary(&services))
return false;
const base::DictionaryValue* cloud_print = NULL;
if (!services->GetDictionary(kCloudPrintJsonName, &cloud_print))
return false;
bool valid_file = true;
// Don't exit on fail. Collect all data for re-use by user later.
if (!cloud_print->GetBoolean(kEnabledOptionName, &valid_file))
valid_file = false;
cloud_print->GetString(kEmailOptionName, &email_);
cloud_print->GetString(kProxyIdOptionName, &proxy_id_);
cloud_print->GetString(kRobotEmailOptionName, &robot_email_);
cloud_print->GetString(kRobotTokenOptionName, &robot_token_);
cloud_print->GetString(kAuthTokenOptionName, &auth_token_);
cloud_print->GetString(kXmppAuthTokenOptionName, &xmpp_auth_token_);
return valid_file && IsValid();
}
bool ServiceState::IsValid() const {
if (email_.empty() || proxy_id_.empty())
return false;
bool valid_robot = !robot_email_.empty() && !robot_token_.empty();
bool valid_auth = !auth_token_.empty() && !xmpp_auth_token_.empty();
return valid_robot || valid_auth;
}
std::string ServiceState::ToString() {
scoped_ptr<base::DictionaryValue> services(new base::DictionaryValue());
scoped_ptr<base::DictionaryValue> cloud_print(new base::DictionaryValue());
cloud_print->SetBoolean(kEnabledOptionName, true);
SetNotEmptyJsonString(cloud_print.get(), kEmailOptionName, email_);
SetNotEmptyJsonString(cloud_print.get(), kProxyIdOptionName, proxy_id_);
SetNotEmptyJsonString(cloud_print.get(), kRobotEmailOptionName, robot_email_);
SetNotEmptyJsonString(cloud_print.get(), kRobotTokenOptionName, robot_token_);
SetNotEmptyJsonString(cloud_print.get(), kAuthTokenOptionName, auth_token_);
SetNotEmptyJsonString(cloud_print.get(), kXmppAuthTokenOptionName,
xmpp_auth_token_);
services->Set(kCloudPrintJsonName, cloud_print.release());
std::string json;
base::JSONWriter::WriteWithOptions(services.get(),
base::JSONWriter::OPTIONS_PRETTY_PRINT,
&json);
return json;
}
std::string ServiceState::LoginToGoogle(const std::string& service,
const std::string& email,
const std::string& password) {
base::MessageLoopForIO loop;
net::URLRequestContextBuilder builder;
scoped_ptr<net::URLRequestContext> context(builder.Build());
ServiceStateURLRequestDelegate fetcher_delegate;
GURL url(kClientLoginUrl);
std::string post_body;
post_body += "accountType=GOOGLE";
post_body += "&Email=" + net::EscapeUrlEncodedData(email, true);
post_body += "&Passwd=" + net::EscapeUrlEncodedData(password, true);
post_body += "&source=" + net::EscapeUrlEncodedData("CP-Service", true);
post_body += "&service=" + net::EscapeUrlEncodedData(service, true);
scoped_ptr<net::URLRequest> request(context->CreateRequest(
url, net::DEFAULT_PRIORITY, &fetcher_delegate, NULL));
int load_flags = request->load_flags();
load_flags = load_flags | net::LOAD_DO_NOT_SEND_COOKIES;
load_flags = load_flags | net::LOAD_DO_NOT_SAVE_COOKIES;
request->SetLoadFlags(load_flags);
scoped_ptr<net::UploadElementReader> reader(
net::UploadOwnedBytesElementReader::CreateWithString(post_body));
request->set_upload(make_scoped_ptr(
net::UploadDataStream::CreateWithReader(reader.Pass(), 0)));
request->SetExtraRequestHeaderByName(
"Content-Type", "application/x-www-form-urlencoded", true);
request->set_method("POST");
request->Start();
base::MessageLoop::current()->PostDelayedTask(
FROM_HERE,
base::MessageLoop::QuitClosure(),
base::TimeDelta::FromMilliseconds(kRequestTimeoutMs));
base::MessageLoop::current()->Run();
const char kAuthStart[] = "Auth=";
std::vector<std::string> lines;
Tokenize(fetcher_delegate.data(), "\r\n", &lines);
for (size_t i = 0; i < lines.size(); ++i) {
if (StartsWithASCII(lines[i], kAuthStart, false))
return lines[i].substr(arraysize(kAuthStart) - 1);
}
return std::string();
}
bool ServiceState::Configure(const std::string& email,
const std::string& password,
const std::string& proxy_id) {
robot_token_.clear();
robot_email_.clear();
email_ = email;
proxy_id_ = proxy_id;
auth_token_ = LoginToGoogle("cloudprint", email_, password);
xmpp_auth_token_ = LoginToGoogle("chromiumsync", email_, password);
return IsValid();
}
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