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/*
* Copyright (C) 2008 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_WEBORIGIN_SECURITY_ORIGIN_HASH_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_WEBORIGIN_SECURITY_ORIGIN_HASH_H_
#include "base/memory/scoped_refptr.h"
#include "build/build_config.h"
#include "third_party/blink/renderer/platform/weborigin/kurl.h"
#include "third_party/blink/renderer/platform/weborigin/security_origin.h"
#include "third_party/blink/renderer/platform/wtf/allocator.h"
namespace blink {
// This Hash implements the "same origin" equality relation between two origins.
// As such it ignores the domain that might or might not be set on the origin.
// If you need "same origin-domain" equality you'll need to use a different hash
// function.
struct SecurityOriginHash {
STATIC_ONLY(SecurityOriginHash);
static unsigned GetHash(const SecurityOrigin* origin) {
base::Optional<base::UnguessableToken> nonce =
origin->GetNonceForSerialization();
size_t nonce_hash = nonce ? base::UnguessableTokenHash()(*nonce) : 0;
unsigned hash_codes[] = {
origin->Protocol().Impl() ? origin->Protocol().Impl()->GetHash() : 0,
origin->Host().Impl() ? origin->Host().Impl()->GetHash() : 0,
origin->Port(),
#if ARCH_CPU_32_BITS
nonce_hash,
#elif ARCH_CPU_64_BITS
static_cast<unsigned>(nonce_hash),
static_cast<unsigned>(nonce_hash >> 32),
#else
#error "Unknown bits"
#endif
};
return StringHasher::HashMemory<sizeof(hash_codes)>(hash_codes);
}
static unsigned GetHash(const scoped_refptr<const SecurityOrigin>& origin) {
return GetHash(origin.get());
}
static bool Equal(const SecurityOrigin* a, const SecurityOrigin* b) {
if (!a || !b)
return a == b;
return a->IsSameSchemeHostPort(b);
}
static bool Equal(const SecurityOrigin* a,
const scoped_refptr<const SecurityOrigin>& b) {
return Equal(a, b.get());
}
static bool Equal(const scoped_refptr<const SecurityOrigin>& a,
const SecurityOrigin* b) {
return Equal(a.get(), b);
}
static bool Equal(const scoped_refptr<const SecurityOrigin>& a,
const scoped_refptr<const SecurityOrigin>& b) {
return Equal(a.get(), b.get());
}
static const bool safe_to_compare_to_empty_or_deleted = false;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_WEBORIGIN_SECURITY_ORIGIN_HASH_H_