// Copyright 2014 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.

#ifndef ContentSecurityPolicyParsers_h
#define ContentSecurityPolicyParsers_h

#include "platform/Crypto.h"
#include "platform/PlatformExport.h"
#include "wtf/text/Unicode.h"

namespace blink {

typedef std::pair<unsigned, DigestValue> CSPHashValue;

enum ContentSecurityPolicyHeaderType {
  ContentSecurityPolicyHeaderTypeReport,
  ContentSecurityPolicyHeaderTypeEnforce
};

enum ContentSecurityPolicyHeaderSource {
  ContentSecurityPolicyHeaderSourceHTTP,
  ContentSecurityPolicyHeaderSourceMeta
};

enum ContentSecurityPolicyHashAlgorithm {
  ContentSecurityPolicyHashAlgorithmNone = 0,
  ContentSecurityPolicyHashAlgorithmSha1 = 1 << 1,
  ContentSecurityPolicyHashAlgorithmSha256 = 1 << 2,
  ContentSecurityPolicyHashAlgorithmSha384 = 1 << 3,
  ContentSecurityPolicyHashAlgorithmSha512 = 1 << 4
};

PLATFORM_EXPORT bool isCSPDirectiveNameCharacter(UChar);
PLATFORM_EXPORT bool isCSPDirectiveValueCharacter(UChar);
PLATFORM_EXPORT bool isNonceCharacter(UChar);
PLATFORM_EXPORT bool isSourceCharacter(UChar);
PLATFORM_EXPORT bool isPathComponentCharacter(UChar);
PLATFORM_EXPORT bool isHostCharacter(UChar);
PLATFORM_EXPORT bool isSchemeContinuationCharacter(UChar);
PLATFORM_EXPORT bool isNotASCIISpace(UChar);
PLATFORM_EXPORT bool isNotColonOrSlash(UChar);
PLATFORM_EXPORT bool isMediaTypeCharacter(UChar);

// Only checks for general Base64 encoded chars, not '=' chars since '=' is
// positional and may only appear at the end of a Base64 encoded string.
PLATFORM_EXPORT bool isBase64EncodedCharacter(UChar);

}  // namespace blink

#endif
