gecko-dev/dom/quota/OriginScope.h

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8.5 KiB
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_quota_originorpatternstring_h__
#define mozilla_dom_quota_originorpatternstring_h__
#include "mozilla/dom/quota/QuotaCommon.h"
#include "mozilla/BasePrincipal.h"
BEGIN_QUOTA_NAMESPACE
class OriginScope
{
public:
enum Type
{
eOrigin,
ePattern,
ePrefix,
eNull
};
private:
struct OriginAndAttributes
{
nsCString mOrigin;
OriginAttributes mAttributes;
OriginAndAttributes(const OriginAndAttributes& aOther)
: mOrigin(aOther.mOrigin)
, mAttributes(aOther.mAttributes)
{
MOZ_COUNT_CTOR(OriginAndAttributes);
}
explicit OriginAndAttributes(const nsACString& aOrigin)
: mOrigin(aOrigin)
{
nsCString originNoSuffix;
MOZ_ALWAYS_TRUE(mAttributes.PopulateFromOrigin(aOrigin, originNoSuffix));
MOZ_COUNT_CTOR(OriginAndAttributes);
}
~OriginAndAttributes()
{
MOZ_COUNT_DTOR(OriginAndAttributes);
}
};
union {
// eOrigin
OriginAndAttributes* mOriginAndAttributes;
// ePattern
mozilla::OriginAttributesPattern* mPattern;
// ePrefix
nsCString* mPrefix;
// eNull
void* mDummy;
};
Type mType;
public:
static OriginScope
FromOrigin(const nsACString& aOrigin)
{
return OriginScope(aOrigin, true);
}
static OriginScope
FromPattern(const mozilla::OriginAttributesPattern& aPattern)
{
return OriginScope(aPattern);
}
static OriginScope
FromJSONPattern(const nsAString& aJSONPattern)
{
return OriginScope(aJSONPattern);
}
static OriginScope
FromPrefix(const nsACString& aPrefix)
{
return OriginScope(aPrefix, false);
}
static OriginScope
FromNull()
{
return OriginScope();
}
OriginScope(const OriginScope& aOther)
{
if (aOther.IsOrigin()) {
mOriginAndAttributes =
new OriginAndAttributes(*aOther.mOriginAndAttributes);
} else if (aOther.IsPattern()) {
mPattern = new mozilla::OriginAttributesPattern(*aOther.mPattern);
} else if (aOther.IsPrefix()) {
mPrefix = new nsCString(*aOther.mPrefix);
} else {
mDummy = aOther.mDummy;
}
mType = aOther.mType;
}
~OriginScope()
{
Destroy();
}
bool
IsOrigin() const
{
return mType == eOrigin;
}
bool
IsPattern() const
{
return mType == ePattern;
}
bool
IsPrefix() const
{
return mType == ePrefix;
}
bool
IsNull() const
{
return mType == eNull;
}
Type
GetType() const
{
return mType;
}
void
SetFromOrigin(const nsACString& aOrigin)
{
Destroy();
mOriginAndAttributes = new OriginAndAttributes(aOrigin);
mType = eOrigin;
}
void
SetFromPattern(const mozilla::OriginAttributesPattern& aPattern)
{
Destroy();
mPattern = new mozilla::OriginAttributesPattern(aPattern);
mType = ePattern;
}
void
SetFromJSONPattern(const nsAString& aJSONPattern)
{
Destroy();
mPattern = new mozilla::OriginAttributesPattern();
MOZ_ALWAYS_TRUE(mPattern->Init(aJSONPattern));
mType = ePattern;
}
void
SetFromPrefix(const nsACString& aPrefix)
{
Destroy();
mPrefix = new nsCString(aPrefix);
mType = ePrefix;
}
void
SetFromNull()
{
Destroy();
mDummy = nullptr;
mType = eNull;
}
const nsACString&
GetOrigin() const
{
MOZ_ASSERT(IsOrigin());
MOZ_ASSERT(mOriginAndAttributes);
return mOriginAndAttributes->mOrigin;
}
void
SetOrigin(const nsACString& aOrigin)
{
MOZ_ASSERT(IsOrigin());
MOZ_ASSERT(mOriginAndAttributes);
mOriginAndAttributes->mOrigin = aOrigin;
}
const mozilla::OriginAttributes&
GetOriginAttributes() const
{
MOZ_ASSERT(IsOrigin());
MOZ_ASSERT(mOriginAndAttributes);
return mOriginAndAttributes->mAttributes;
}
const mozilla::OriginAttributesPattern&
GetPattern() const
{
MOZ_ASSERT(IsPattern());
MOZ_ASSERT(mPattern);
return *mPattern;
}
const nsACString&
GetPrefix() const
{
MOZ_ASSERT(IsPrefix());
MOZ_ASSERT(mPrefix);
return *mPrefix;
}
void
SetPrefix(const nsACString& aPrefix)
{
MOZ_ASSERT(IsPrefix());
MOZ_ASSERT(mPrefix);
*mPrefix = aPrefix;
}
bool MatchesOrigin(const OriginScope& aOther) const
{
MOZ_ASSERT(aOther.IsOrigin());
MOZ_ASSERT(aOther.mOriginAndAttributes);
bool match;
if (IsOrigin()) {
MOZ_ASSERT(mOriginAndAttributes);
match = mOriginAndAttributes->mOrigin.Equals(
aOther.mOriginAndAttributes->mOrigin);
} else if (IsPattern()) {
MOZ_ASSERT(mPattern);
match = mPattern->Matches(aOther.mOriginAndAttributes->mAttributes);
} else if (IsPrefix()) {
MOZ_ASSERT(mPrefix);
match = StringBeginsWith(aOther.mOriginAndAttributes->mOrigin, *mPrefix);
} else {
match = true;
}
return match;
}
bool MatchesPattern(const OriginScope& aOther) const
{
MOZ_ASSERT(aOther.IsPattern());
MOZ_ASSERT(aOther.mPattern);
bool match;
if (IsOrigin()) {
MOZ_ASSERT(mOriginAndAttributes);
match = aOther.mPattern->Matches(mOriginAndAttributes->mAttributes);
} else if (IsPattern()) {
MOZ_ASSERT(mPattern);
match = mPattern->Overlaps(*aOther.mPattern);
} else if (IsPrefix()) {
MOZ_ASSERT(mPrefix);
// The match will be always true here because any origin attributes
// pattern overlaps any origin prefix (an origin prefix targets all
// origin attributes).
match = true;
} else {
match = true;
}
return match;
}
bool MatchesPrefix(const OriginScope& aOther) const
{
MOZ_ASSERT(aOther.IsPrefix());
MOZ_ASSERT(aOther.mPrefix);
bool match;
if (IsOrigin()) {
MOZ_ASSERT(mOriginAndAttributes);
match = StringBeginsWith(mOriginAndAttributes->mOrigin, *aOther.mPrefix);
} else if (IsPattern()) {
MOZ_ASSERT(mPattern);
// The match will be always true here because any origin attributes
// pattern overlaps any origin prefix (an origin prefix targets all
// origin attributes).
match = true;
} else if (IsPrefix()) {
MOZ_ASSERT(mPrefix);
match = mPrefix->Equals(*aOther.mPrefix);
} else {
match = true;
}
return match;
}
bool Matches(const OriginScope& aOther) const
{
bool match;
if (aOther.IsOrigin()) {
match = MatchesOrigin(aOther);
} else if (aOther.IsPattern()) {
match = MatchesPattern(aOther);
} else if (aOther.IsPrefix()) {
match = MatchesPrefix(aOther);
} else {
match = true;
}
return match;
}
OriginScope
Clone()
{
if (IsOrigin()) {
MOZ_ASSERT(mOriginAndAttributes);
return OriginScope(*mOriginAndAttributes);
}
if (IsPattern()) {
MOZ_ASSERT(mPattern);
return OriginScope(*mPattern);
}
if (IsPrefix()) {
MOZ_ASSERT(mPrefix);
return OriginScope(*mPrefix, false);
}
MOZ_ASSERT(IsNull());
return OriginScope();
}
private:
explicit OriginScope(const OriginAndAttributes& aOriginAndAttributes)
: mOriginAndAttributes(new OriginAndAttributes(aOriginAndAttributes))
, mType(eOrigin)
{ }
explicit OriginScope(const nsACString& aOriginOrPrefix, bool aOrigin)
{
if (aOrigin) {
mOriginAndAttributes = new OriginAndAttributes(aOriginOrPrefix);
mType = eOrigin;
} else {
mPrefix = new nsCString(aOriginOrPrefix);
mType = ePrefix;
}
}
explicit OriginScope(const mozilla::OriginAttributesPattern& aPattern)
: mPattern(new mozilla::OriginAttributesPattern(aPattern))
, mType(ePattern)
{ }
explicit OriginScope(const nsAString& aJSONPattern)
: mPattern(new mozilla::OriginAttributesPattern())
, mType(ePattern)
{
MOZ_ALWAYS_TRUE(mPattern->Init(aJSONPattern));
}
OriginScope()
: mDummy(nullptr)
, mType(eNull)
{ }
void
Destroy()
{
if (IsOrigin()) {
MOZ_ASSERT(mOriginAndAttributes);
delete mOriginAndAttributes;
mOriginAndAttributes = nullptr;
} else if (IsPattern()) {
MOZ_ASSERT(mPattern);
delete mPattern;
mPattern = nullptr;
} else if (IsPrefix()) {
MOZ_ASSERT(mPrefix);
delete mPrefix;
mPrefix = nullptr;
}
}
bool
operator==(const OriginScope& aOther) = delete;
};
END_QUOTA_NAMESPACE
#endif // mozilla_dom_quota_originorpatternstring_h__