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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#import "components/webauthn/ios/passkey_tab_helper.h"
#import "base/base64.h"
#import "base/base64url.h"
#import "base/metrics/histogram_functions.h"
#import "base/notreached.h"
#import "components/webauthn/core/browser/passkey_model.h"
#import "ios/web/public/js_messaging/script_message.h"
#import "ios/web/public/web_state.h"
namespace {
// These values are logged to UMA. Entries should not be renumbered and
// numeric values should never be reused.
//
// LINT.IfChange
enum class WebAuthenticationIOSContentAreaEvent {
kGetRequested,
kCreateRequested,
kGetResolvedGpm,
kGetResolvedNonGpm,
kCreateResolvedGpm,
kCreateResolvedNonGpm,
kMaxValue = kCreateResolvedNonGpm,
};
// LINT.ThenChange(//tools/metrics/histograms/metadata/webauthn/enums.xml)
// Logs a metric indicating that an `event` occurred.
void LogEvent(WebAuthenticationIOSContentAreaEvent event) {
base::UmaHistogramEnumeration("WebAuthentication.IOS.ContentAreaEvent",
event);
}
} // namespace
PasskeyTabHelper::~PasskeyTabHelper() = default;
void PasskeyTabHelper::LogEventFromString(const std::string& event) {
if (event == "getRequested") {
LogEvent(WebAuthenticationIOSContentAreaEvent::kGetRequested);
} else if (event == "createRequested") {
LogEvent(WebAuthenticationIOSContentAreaEvent::kCreateRequested);
} else if (event == "createResolvedGpm") {
LogEvent(WebAuthenticationIOSContentAreaEvent::kCreateResolvedGpm);
} else if (event == "createResolvedNonGpm") {
LogEvent(WebAuthenticationIOSContentAreaEvent::kCreateResolvedNonGpm);
} else {
NOTREACHED();
}
}
void PasskeyTabHelper::HandleGetResolvedEvent(
const std::string& credential_id_base64url_encoded,
const std::string& rp_id) {
std::string credential_id;
if (!base::Base64UrlDecode(credential_id_base64url_encoded,
base::Base64UrlDecodePolicy::IGNORE_PADDING,
&credential_id)) {
return;
}
if (passkey_model_->GetPasskeyByCredentialId(rp_id, credential_id)
.has_value()) {
LogEvent(WebAuthenticationIOSContentAreaEvent::kGetResolvedGpm);
} else {
LogEvent(WebAuthenticationIOSContentAreaEvent::kGetResolvedNonGpm);
}
}
PasskeyTabHelper::PasskeyTabHelper(web::WebState* web_state,
webauthn::PasskeyModel* passkey_model)
: passkey_model_(passkey_model) {
CHECK(web_state);
CHECK(passkey_model_);
}
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