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// Copyright 2018 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 "components/omnibox/browser/document_suggestions_service.h"
#include <memory>
#include <utility>
#include "base/feature_list.h"
#include "base/json/json_writer.h"
#include "base/memory/scoped_refptr.h"
#include "base/metrics/field_trial_params.h"
#include "base/strings/stringprintf.h"
#include "base/values.h"
#include "components/data_use_measurement/core/data_use_user_data.h"
#include "components/omnibox/browser/document_provider.h"
#include "components/omnibox/browser/omnibox_field_trial.h"
#include "components/search_engines/template_url_service.h"
#include "components/variations/variations_associated_data.h"
#include "net/base/load_flags.h"
#include "net/traffic_annotation/network_traffic_annotation.h"
#include "services/identity/public/cpp/identity_manager.h"
#include "services/identity/public/cpp/primary_account_access_token_fetcher.h"
#include "services/network/public/cpp/resource_request.h"
#include "services/network/public/cpp/resource_response.h"
#include "services/network/public/cpp/shared_url_loader_factory.h"
#include "services/network/public/cpp/simple_url_loader.h"
namespace {
// Builds a document search request body. Inputs are:
// |query|: Current query text.
// The format of the request is:
// {
// query: "the search text",
// start: 0,
// pageSize: 10,
// sourceOptions: [{source: {predefinedSource: "GOOGLE_DRIVE"}}]
// }
std::string BuildDocumentSuggestionRequest(const base::string16& query) {
base::Value root(base::Value::Type::DICTIONARY);
root.SetKey("query", base::Value(query));
root.SetKey("start", base::Value(0));
root.SetKey("pageSize", base::Value(10));
base::Value::ListStorage storage_options_list;
base::Value source_definition(base::Value::Type::DICTIONARY);
source_definition.SetPath({"source", "predefinedSource"},
base::Value("GOOGLE_DRIVE"));
storage_options_list.emplace_back(std::move(source_definition));
root.SetKey("dataSourceRestrictions",
base::Value(std::move(storage_options_list)));
std::string result;
base::JSONWriter::Write(root, &result);
return result;
}
} // namespace
DocumentSuggestionsService::DocumentSuggestionsService(
identity::IdentityManager* identity_manager,
scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory)
: url_loader_factory_(url_loader_factory),
identity_manager_(identity_manager),
token_fetcher_(nullptr) {
DCHECK(url_loader_factory);
}
DocumentSuggestionsService::~DocumentSuggestionsService() {}
void DocumentSuggestionsService::CreateDocumentSuggestionsRequest(
const base::string16& query,
const TemplateURLService* template_url_service,
StartCallback start_callback,
CompletionCallback completion_callback) {
std::string endpoint = base::GetFieldTrialParamValueByFeature(
omnibox::kDocumentProvider, "DocumentProviderEndpoint");
if (endpoint.empty())
endpoint = "https://cloudsearch.googleapis.com/v1/query/search";
const GURL suggest_url = GURL(endpoint);
DCHECK(suggest_url.is_valid());
net::NetworkTrafficAnnotationTag traffic_annotation =
net::DefineNetworkTrafficAnnotation("omnibox_documentsuggest", R"(
semantics {
sender: "Omnibox"
description:
"Request for Google Drive document suggestions from the omnibox."
"User must be signed in and have default search provider set to "
"Google."
trigger: "Signed-in user enters text in the omnibox."
data: "The query string from the omnibox."
destination: GOOGLE_OWNED_SERVICE
}
policy {
cookies_allowed: YES
cookies_store: "user"
setting:
"Coupled to Google default search plus signed-in"
chrome_policy {
SearchSuggestEnabled {
policy_options {mode: MANDATORY}
SearchSuggestEnabled: false
}
}
})");
auto request = std::make_unique<network::ResourceRequest>();
request->url = suggest_url;
request->method = "POST";
std::string request_body = BuildDocumentSuggestionRequest(query);
request->load_flags = net::LOAD_DO_NOT_SAVE_COOKIES;
// TODO(https://crbug.com/808498) re-add data use measurement once
// SimpleURLLoader supports it.
// We should attach data_use_measurement::DataUseUserData::OMNIBOX.
// Create and fetch an OAuth2 token.
std::string scope = "https://www.googleapis.com/auth/cloud_search.query";
OAuth2TokenService::ScopeSet scopes;
scopes.insert(scope);
token_fetcher_ = std::make_unique<identity::PrimaryAccountAccessTokenFetcher>(
"document_suggestions_service", identity_manager_, scopes,
base::BindOnce(&DocumentSuggestionsService::AccessTokenAvailable,
base::Unretained(this), std::move(request),
std::move(request_body), traffic_annotation,
std::move(start_callback), std::move(completion_callback)),
identity::PrimaryAccountAccessTokenFetcher::Mode::kWaitUntilAvailable);
}
void DocumentSuggestionsService::StopCreatingDocumentSuggestionsRequest() {
std::unique_ptr<identity::PrimaryAccountAccessTokenFetcher>
token_fetcher_deleter(std::move(token_fetcher_));
}
void DocumentSuggestionsService::AccessTokenAvailable(
std::unique_ptr<network::ResourceRequest> request,
std::string request_body,
net::NetworkTrafficAnnotationTag traffic_annotation,
StartCallback start_callback,
CompletionCallback completion_callback,
GoogleServiceAuthError error,
identity::AccessTokenInfo access_token_info) {
DCHECK(token_fetcher_);
token_fetcher_.reset();
// If there were no errors obtaining the access token, append it to the
// request as a header.
if (error.state() == GoogleServiceAuthError::NONE) {
DCHECK(!access_token_info.token.empty());
request->headers.SetHeader(
"Authorization",
base::StringPrintf("Bearer %s", access_token_info.token.c_str()));
}
StartDownloadAndTransferLoader(std::move(request), std::move(request_body),
traffic_annotation, std::move(start_callback),
std::move(completion_callback));
}
void DocumentSuggestionsService::StartDownloadAndTransferLoader(
std::unique_ptr<network::ResourceRequest> request,
std::string request_body,
net::NetworkTrafficAnnotationTag traffic_annotation,
StartCallback start_callback,
CompletionCallback completion_callback) {
std::unique_ptr<network::SimpleURLLoader> loader =
network::SimpleURLLoader::Create(std::move(request), traffic_annotation);
if (!request_body.empty()) {
loader->AttachStringForUpload(request_body, "application/json");
}
loader->DownloadToStringOfUnboundedSizeUntilCrashAndDie(
url_loader_factory_.get(),
base::BindOnce(std::move(completion_callback), loader.get()));
std::move(start_callback).Run(std::move(loader));
}
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