gecko-dev/netwerk/dns/nsEffectiveTLDService.h

132 lines
3.2 KiB
C++

//* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 EffectiveTLDService_h
#define EffectiveTLDService_h
#include "nsIEffectiveTLDService.h"
#include "nsIMemoryReporter.h"
#include "nsTHashtable.h"
#include "nsString.h"
#include "nsCOMPtr.h"
#include "mozilla/Attributes.h"
#include "mozilla/MemoryReporting.h"
class nsIIDNService;
#define ETLD_ENTRY_N_INDEX_BITS 30
// struct for static data generated from effective_tld_names.dat
struct ETLDEntry {
uint32_t strtab_index : ETLD_ENTRY_N_INDEX_BITS;
uint32_t exception : 1;
uint32_t wild : 1;
};
// hash entry class
class nsDomainEntry : public PLDHashEntryHdr
{
friend class nsEffectiveTLDService;
public:
// Hash methods
typedef const char* KeyType;
typedef const char* KeyTypePointer;
explicit nsDomainEntry(KeyTypePointer aEntry)
{
}
nsDomainEntry(const nsDomainEntry& toCopy)
{
// if we end up here, things will break. nsTHashtable shouldn't
// allow this, since we set ALLOW_MEMMOVE to true.
NS_NOTREACHED("nsDomainEntry copy constructor is forbidden!");
}
~nsDomainEntry()
{
}
KeyType GetKey() const
{
return GetEffectiveTLDName(mData->strtab_index);
}
bool KeyEquals(KeyTypePointer aKey) const
{
return !strcmp(GetKey(), aKey);
}
static KeyTypePointer KeyToPointer(KeyType aKey)
{
return aKey;
}
static PLDHashNumber HashKey(KeyTypePointer aKey)
{
// PL_DHashStringKey doesn't use the table parameter, so we can safely
// pass nullptr
return PL_DHashStringKey(nullptr, aKey);
}
enum { ALLOW_MEMMOVE = true };
void SetData(const ETLDEntry* entry) { mData = entry; }
bool IsNormal() { return mData->wild || !mData->exception; }
bool IsException() { return mData->exception; }
bool IsWild() { return mData->wild; }
static const char *GetEffectiveTLDName(size_t idx)
{
return strings.strtab + idx;
}
private:
const ETLDEntry* mData;
#define ETLD_STR_NUM_1(line) str##line
#define ETLD_STR_NUM(line) ETLD_STR_NUM_1(line)
struct etld_string_list {
#define ETLD_ENTRY(name, ex, wild) char ETLD_STR_NUM(__LINE__)[sizeof(name)];
#include "etld_data.inc"
#undef ETLD_ENTRY
};
static const union etld_strings {
struct etld_string_list list;
char strtab[1];
} strings;
static const ETLDEntry entries[];
void FuncForStaticAsserts(void);
#undef ETLD_STR_NUM
#undef ETLD_STR_NUM1
};
class nsEffectiveTLDService MOZ_FINAL
: public nsIEffectiveTLDService
, public nsIMemoryReporter
{
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIEFFECTIVETLDSERVICE
NS_DECL_NSIMEMORYREPORTER
nsEffectiveTLDService();
nsresult Init();
size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf);
private:
nsresult GetBaseDomainInternal(nsCString &aHostname, int32_t aAdditionalParts, nsACString &aBaseDomain);
nsresult NormalizeHostname(nsCString &aHostname);
~nsEffectiveTLDService();
nsTHashtable<nsDomainEntry> mHash;
nsCOMPtr<nsIIDNService> mIDNService;
};
#endif // EffectiveTLDService_h