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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/lens/lens_url_utils.h"
#include <map>
#include <string>
#include "base/logging.h"
#include "base/metrics/histogram_functions.h"
#include "base/strings/strcat.h"
#include "base/strings/string_number_conversions.h"
#include "base/time/time.h"
#include "components/lens/lens_entrypoints.h"
#include "components/lens/lens_features.h"
#include "components/lens/lens_metadata.h"
#include "components/lens/lens_metadata.mojom.h"
#include "net/base/url_util.h"
#include "url/gurl.h"
namespace {
// Entry point string names.
constexpr char kEntryPointQueryParameter[] = "ep";
constexpr char kChromeRegionSearchMenuItem[] = "crs";
constexpr char kChromeSearchWithGoogleLensContextMenuItem[] = "ccm";
constexpr char kChromeVideoFrameSearchContextMenuItem[] = "cvfs";
constexpr char kChromeLensOverlayLocationBar[] = "crmntob";
constexpr char kSurfaceQueryParameter[] = "s";
// The value of Surface.CHROMIUM expected by Lens Web
constexpr char kChromiumSurfaceProtoValue[] = "4";
constexpr char kStartTimeQueryParameter[] = "st";
constexpr char kLensMetadataParameter[] = "lm";
constexpr char kRenderingEnvironmentQueryParameter[] = "re";
constexpr char kOneLensDesktopWebFullscreen[] = "df";
void AppendQueryParam(std::string* query_string,
const char name[],
const char value[]) {
if (!query_string->empty()) {
base::StrAppend(query_string, {"&"});
}
base::StrAppend(query_string, {name, "=", value});
}
std::string GetEntryPointQueryString(lens::EntryPoint entry_point) {
switch (entry_point) {
case lens::CHROME_REGION_SEARCH_MENU_ITEM:
return kChromeRegionSearchMenuItem;
case lens::CHROME_SEARCH_WITH_GOOGLE_LENS_CONTEXT_MENU_ITEM:
return kChromeSearchWithGoogleLensContextMenuItem;
case lens::CHROME_VIDEO_FRAME_SEARCH_CONTEXT_MENU_ITEM:
return kChromeVideoFrameSearchContextMenuItem;
case lens::CHROME_LENS_OVERLAY_LOCATION_BAR:
return kChromeLensOverlayLocationBar;
case lens::UNKNOWN:
return "";
}
}
std::map<std::string, std::string> GetLensQueryParametersMap(
lens::EntryPoint ep) {
std::map<std::string, std::string> query_parameters;
// Insert EntryPoint query parameter.
std::string entry_point_query_string = GetEntryPointQueryString(ep);
if (!entry_point_query_string.empty()) {
query_parameters.insert(
{kEntryPointQueryParameter, entry_point_query_string});
}
// Insert RenderingEnvironment desktop fullscreen query parameter.
query_parameters.insert(
{kRenderingEnvironmentQueryParameter, kOneLensDesktopWebFullscreen});
query_parameters.insert({kSurfaceQueryParameter, kChromiumSurfaceProtoValue});
int64_t current_time_ms = base::Time::Now().InMillisecondsSinceUnixEpoch();
query_parameters.insert(
{kStartTimeQueryParameter, base::NumberToString(current_time_ms)});
return query_parameters;
}
} // namespace
namespace lens {
void AppendLogsQueryParam(
std::string* query_string,
const std::vector<lens::mojom::LatencyLogPtr>& log_data) {
if (!log_data.empty()) {
AppendQueryParam(query_string, kLensMetadataParameter,
LensMetadata::CreateProto(std::move(log_data)).c_str());
}
}
GURL AppendOrReplaceQueryParametersForLensRequest(const GURL& url,
lens::EntryPoint ep) {
GURL modified_url(url);
for (auto const& param : GetLensQueryParametersMap(ep)) {
modified_url = net::AppendOrReplaceQueryParameter(modified_url, param.first,
param.second);
}
return modified_url;
}
std::string GetQueryParametersForLensRequest(lens::EntryPoint ep) {
std::string query_string;
for (auto const& param : GetLensQueryParametersMap(ep)) {
AppendQueryParam(&query_string, param.first.c_str(), param.second.c_str());
}
return query_string;
}
bool IsValidLensResultUrl(const GURL& url) {
if (url.is_empty()) {
return false;
}
std::string payload;
// Make sure the payload is present
return net::GetValueForKeyInQuery(url, kPayloadQueryParameter, &payload);
}
bool IsLensMWebResult(const GURL& url) {
std::string request_id;
std::string surface;
GURL result_url = GURL(lens::features::GetLensOverlayResultsSearchURL());
return !url.is_empty() && url.host() == result_url.host() &&
url.path() == result_url.path() &&
net::GetValueForKeyInQuery(url, kLensRequestQueryParameter,
&request_id) &&
!net::GetValueForKeyInQuery(url, kLensSurfaceQueryParameter, &surface);
}
} // namespace lens
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