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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef NET_CERT_X509_UTIL_WIN_H_
#define NET_CERT_X509_UTIL_WIN_H_
#include <windows.h>
#include <memory>
#include <vector>
#include "base/containers/span.h"
#include "base/memory/scoped_refptr.h"
#include "base/win/wincrypt_shim.h"
#include "crypto/scoped_capi_types.h"
#include "net/base/hash_value.h"
#include "net/base/net_export.h"
#include "net/cert/x509_certificate.h"
namespace net::x509_util {
// Returns a span containing the DER encoded certificate data for `os_cert`.
NET_EXPORT base::span<const uint8_t> CertContextAsSpan(PCCERT_CONTEXT os_cert);
// Creates an X509Certificate representing |os_cert| with intermediates
// |os_chain|.
NET_EXPORT scoped_refptr<X509Certificate> CreateX509CertificateFromCertContexts(
PCCERT_CONTEXT os_cert,
const std::vector<PCCERT_CONTEXT>& os_chain);
// Creates an X509Certificate with non-standard parsing options.
// Do not use without consulting //net owners.
NET_EXPORT scoped_refptr<X509Certificate> CreateX509CertificateFromCertContexts(
PCCERT_CONTEXT os_cert,
const std::vector<PCCERT_CONTEXT>& os_chain,
X509Certificate::UnsafeCreateOptions options);
// Returns a new PCCERT_CONTEXT containing the certificate and its
// intermediate certificates, or NULL on failure. This function is only
// necessary if the CERT_CONTEXT.hCertStore member will be accessed or
// enumerated, which is generally true for any CryptoAPI functions involving
// certificate chains, including validation or certificate display.
//
// While the returned PCCERT_CONTEXT and its HCERTSTORE can safely be used on
// multiple threads if no further modifications happen, it is generally
// preferable for each thread that needs such a context to obtain its own,
// rather than risk thread-safety issues by sharing.
NET_EXPORT crypto::ScopedPCCERT_CONTEXT CreateCertContextWithChain(
const X509Certificate* cert);
// Specify behavior if an intermediate certificate fails CERT_CONTEXT parsing.
// kFail means the function should return a failure result immediately. kIgnore
// means the invalid intermediate is not added to the output context.
enum class InvalidIntermediateBehavior { kFail, kIgnore };
// As CreateCertContextWithChain above, but |invalid_intermediate_behavior|
// specifies behavior if intermediates of |cert| could not be converted.
NET_EXPORT crypto::ScopedPCCERT_CONTEXT CreateCertContextWithChain(
const X509Certificate* cert,
InvalidIntermediateBehavior invalid_intermediate_behavior);
// Calculates the SHA-256 fingerprint of the certificate. Returns an empty
// (all zero) fingerprint on failure.
NET_EXPORT SHA256HashValue CalculateFingerprint256(PCCERT_CONTEXT cert);
// Returns true if the certificate is self-signed.
NET_EXPORT bool IsSelfSigned(PCCERT_CONTEXT cert_handle);
} // namespace net::x509_util
#endif // NET_CERT_X509_UTIL_WIN_H_
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