// Copyright 2026 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/enterprise/net/core/enterprise_proxy_error_service.h" #include #include "base/functional/bind.h" #include "base/metrics/histogram_functions.h" #include "base/strings/string_number_conversions.h" #include "base/strings/stringprintf.h" #include "components/enterprise/net/core/enterprise_proxy_error_data.h" #include "components/enterprise/net/core/enterprise_proxy_service.h" #include "components/enterprise/net/core/features.h" namespace enterprise_net { EnterpriseProxyErrorService::EnterpriseProxyErrorService( EnterpriseProxyService* enterprise_proxy_service) : enterprise_proxy_service_(enterprise_proxy_service) { CHECK(enterprise_proxy_service_); } EnterpriseProxyErrorService::~EnterpriseProxyErrorService() = default; std::string EnterpriseProxyErrorService::GetErrorPageHTML( Delegate* delegate) const { if (!IsEnterpriseProxyErrorHandlingEnabled() || !delegate) { return std::string(); } const EnterpriseProxyErrorData* error_data = delegate->GetDisguisedErrorData(); if (!error_data) { return std::string(); } base::UmaHistogramSparse("Enterprise.Proxy.DisguisedErrorPage.ErrorCode", error_data->error_code()); return GetErrorPageHTML(*error_data); } bool EnterpriseProxyErrorService::InterceptProxyAuthChallenge( const net::AuthChallengeInfo& auth_info, const GURL& destination_url, const scoped_refptr& response_headers, std::unique_ptr delegate, base::OnceCallback&)> callback) { bool is_handled = true; GURL proxy_url = auth_info.challenger.GetURL(); int error_code = 0; base::StringToInt(auth_info.realm, &error_code); auto eps_callback = base::BindOnce( &EnterpriseProxyErrorService::OnProxyAuthChallengeResult, weak_ptr_factory_.GetWeakPtr(), &is_handled, std::move(delegate), destination_url, std::move(proxy_url), error_code, std::move(callback)); enterprise_proxy_service_->HandleProxyAuthChallenge( auth_info, destination_url, response_headers, std::move(eps_callback)); return is_handled; } // TODO(crbug.com/543015665): Replace with production error page HTML/TS // template. std::string EnterpriseProxyErrorService::GetErrorPageHTML( const EnterpriseProxyErrorData& error_data) const { return base::StringPrintf( "\n" "\n" "Enterprise Proxy Error\n" "\n" "

Enterprise Proxy Error

\n" "

Destination URL: %s

\n" "

Proxy URL: %s

\n" "

Disguised Error Code: %d

\n" "\n" "\n", error_data.destination_url().spec().c_str(), error_data.proxy_url().spec().c_str(), error_data.error_code()); } void EnterpriseProxyErrorService::OnProxyAuthChallengeResult( bool* handled_flag, std::unique_ptr delegate, const GURL& destination_url, const GURL& proxy_url, int error_code, base::OnceCallback&)> coord_callback, EnterpriseProxyService::ProxyAuthChallengeResult result, const std::optional& credentials) { switch (result) { case EnterpriseProxyService::ProxyAuthChallengeResult::kNotApplicable: *handled_flag = false; return; case EnterpriseProxyService::ProxyAuthChallengeResult::kDisguisedError: if (delegate) { delegate->AttachDisguisedErrorData( EnterpriseProxyErrorData(destination_url, proxy_url, error_code)); } std::move(coord_callback).Run(std::nullopt); return; case EnterpriseProxyService::ProxyAuthChallengeResult::kNoCredentialsNeeded: case EnterpriseProxyService::ProxyAuthChallengeResult:: kCredentialFetchFailure: std::move(coord_callback).Run(std::nullopt); return; case EnterpriseProxyService::ProxyAuthChallengeResult:: kCredentialFetchSuccess: std::move(coord_callback).Run(credentials); return; } } } // namespace enterprise_net