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/*
* Copyright (C) 2006 Apple Inc. All rights reserved.
* Copyright (C) 2009 Google 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 INC. OR
* 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
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "HTTPHeaderNames.h"
#include <utility>
#include <wtf/text/WTFString.h>
namespace WebCore {
// FIXME: Not every header fits into a map. Notably, multiple Set-Cookie header fields are needed to set multiple cookies.
class HTTPHeaderMap {
public:
struct CommonHeader {
HTTPHeaderName key;
String value;
CommonHeader isolatedCopy() const & { return { key , value.isolatedCopy() }; }
CommonHeader isolatedCopy() && { return { key , WTFMove(value).isolatedCopy() }; }
friend bool operator==(const CommonHeader&, const CommonHeader&) = default;
};
struct UncommonHeader {
String key;
String value;
UncommonHeader isolatedCopy() const & { return { key.isolatedCopy() , value.isolatedCopy() }; }
UncommonHeader isolatedCopy() && { return { WTFMove(key).isolatedCopy() , WTFMove(value).isolatedCopy() }; }
friend bool operator==(const UncommonHeader&, const UncommonHeader&) = default;
};
typedef Vector<CommonHeader, 0, CrashOnOverflow, 6> CommonHeadersVector;
typedef Vector<UncommonHeader, 0, CrashOnOverflow, 0> UncommonHeadersVector;
class HTTPHeaderMapConstIterator {
public:
HTTPHeaderMapConstIterator(const HTTPHeaderMap& table, size_t commonHeadersIndex, size_t uncommonHeadersIndex)
: m_table(table)
, m_commonHeadersIndex(commonHeadersIndex)
, m_uncommonHeadersIndex(uncommonHeadersIndex)
{
if (m_commonHeadersIndex < m_table.m_commonHeaders.size()) {
ASSERT(!m_uncommonHeadersIndex);
updateKeyValue(m_table.m_commonHeaders[m_commonHeadersIndex]);
} else if (m_uncommonHeadersIndex < m_table.m_uncommonHeaders.size())
updateKeyValue(m_table.m_uncommonHeaders[m_uncommonHeadersIndex]);
}
struct KeyValue {
String key;
std::optional<HTTPHeaderName> keyAsHTTPHeaderName;
String value;
};
using difference_type = ptrdiff_t;
using value_type = KeyValue;
using pointer = const KeyValue*;
using reference = const KeyValue&;
using iterator_category = std::forward_iterator_tag;
const KeyValue* get() const
{
ASSERT(*this != m_table.end());
return &m_keyValue;
}
const KeyValue& operator*() const { return *get(); }
const KeyValue* operator->() const { return get(); }
HTTPHeaderMapConstIterator& operator++()
{
if (m_commonHeadersIndex < m_table.m_commonHeaders.size()) {
ASSERT(!m_uncommonHeadersIndex);
if (++m_commonHeadersIndex < m_table.m_commonHeaders.size()) {
updateKeyValue(m_table.m_commonHeaders[m_commonHeadersIndex]);
return *this;
}
} else
++m_uncommonHeadersIndex;
if (m_uncommonHeadersIndex < m_table.m_uncommonHeaders.size())
updateKeyValue(m_table.m_uncommonHeaders[m_uncommonHeadersIndex]);
return *this;
}
bool operator==(const HTTPHeaderMapConstIterator& other) const
{
return m_commonHeadersIndex == other.m_commonHeadersIndex && m_uncommonHeadersIndex == other.m_uncommonHeadersIndex;
}
private:
void updateKeyValue(const CommonHeader& header)
{
m_keyValue.key = httpHeaderNameString(header.key);
m_keyValue.keyAsHTTPHeaderName = header.key;
m_keyValue.value = header.value;
}
void updateKeyValue(const UncommonHeader& header)
{
m_keyValue.key = header.key;
m_keyValue.keyAsHTTPHeaderName = std::nullopt;
m_keyValue.value = header.value;
}
const HTTPHeaderMap& m_table;
size_t m_commonHeadersIndex;
size_t m_uncommonHeadersIndex;
KeyValue m_keyValue;
};
typedef HTTPHeaderMapConstIterator const_iterator;
WEBCORE_EXPORT HTTPHeaderMap();
WEBCORE_EXPORT HTTPHeaderMap(CommonHeadersVector&&, UncommonHeadersVector&&);
// Gets a copy of the data suitable for passing to another thread.
WEBCORE_EXPORT HTTPHeaderMap isolatedCopy() const &;
WEBCORE_EXPORT HTTPHeaderMap isolatedCopy() &&;
bool isEmpty() const { return m_commonHeaders.isEmpty() && m_uncommonHeaders.isEmpty(); }
int size() const { return m_commonHeaders.size() + m_uncommonHeaders.size(); }
void clear()
{
m_commonHeaders.clear();
m_uncommonHeaders.clear();
}
void shrinkToFit()
{
m_commonHeaders.shrinkToFit();
m_uncommonHeaders.shrinkToFit();
}
WEBCORE_EXPORT String get(StringView name) const;
WEBCORE_EXPORT void set(const String& name, const String& value);
WEBCORE_EXPORT void add(const String& name, const String& value);
void setUncommonHeader(const String& name, const String& value);
void addUncommonHeader(const String& name, const String& value);
WEBCORE_EXPORT void append(const String& name, const String& value);
WEBCORE_EXPORT bool contains(const String&) const;
WEBCORE_EXPORT bool remove(const String&);
#if USE(CF)
void set(CFStringRef name, const String& value);
#ifdef __OBJC__
void set(NSString *name, const String& value) { set((__bridge CFStringRef)name, value); }
#endif
#endif
WEBCORE_EXPORT String get(HTTPHeaderName) const;
void set(HTTPHeaderName, const String& value);
void add(HTTPHeaderName, const String& value);
bool addIfNotPresent(HTTPHeaderName, const String&);
WEBCORE_EXPORT bool contains(HTTPHeaderName) const;
WEBCORE_EXPORT bool remove(HTTPHeaderName);
// Instead of passing a string literal to any of these functions, just use a HTTPHeaderName instead.
template<size_t length> String get(ASCIILiteral) const = delete;
template<size_t length> void set(ASCIILiteral, const String&) = delete;
template<size_t length> bool contains(ASCIILiteral) = delete;
template<size_t length> bool remove(ASCIILiteral) = delete;
const CommonHeadersVector& commonHeaders() const { return m_commonHeaders; }
const UncommonHeadersVector& uncommonHeaders() const { return m_uncommonHeaders; }
CommonHeadersVector& commonHeaders() { return m_commonHeaders; }
UncommonHeadersVector& uncommonHeaders() { return m_uncommonHeaders; }
const_iterator begin() const { return const_iterator(*this, 0, 0); }
const_iterator end() const { return const_iterator(*this, m_commonHeaders.size(), m_uncommonHeaders.size()); }
friend bool operator==(const HTTPHeaderMap& a, const HTTPHeaderMap& b)
{
if (a.m_commonHeaders.size() != b.m_commonHeaders.size() || a.m_uncommonHeaders.size() != b.m_uncommonHeaders.size())
return false;
for (auto& commonHeader : a.m_commonHeaders) {
if (b.get(commonHeader.key) != commonHeader.value)
return false;
}
for (auto& uncommonHeader : a.m_uncommonHeaders) {
if (b.getUncommonHeader(uncommonHeader.key) != uncommonHeader.value)
return false;
}
return true;
}
private:
WEBCORE_EXPORT String getUncommonHeader(StringView name) const;
CommonHeadersVector m_commonHeaders;
UncommonHeadersVector m_uncommonHeaders;
};
} // namespace WebCore
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