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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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/. */
#include "nsCookie.h"
#include "nsUTF8ConverterService.h"
#include <stdlib.h>
#include "nsAutoPtr.h"
/******************************************************************************
* nsCookie:
* string helper impl
******************************************************************************/
// copy aSource strings into contiguous storage provided in aDest1,
// providing terminating nulls for each destination string.
static inline void
StrBlockCopy(const nsACString &aSource1,
const nsACString &aSource2,
const nsACString &aSource3,
const nsACString &aSource4,
char *&aDest1,
char *&aDest2,
char *&aDest3,
char *&aDest4,
char *&aDestEnd)
{
char *toBegin = aDest1;
nsACString::const_iterator fromBegin, fromEnd;
*copy_string(aSource1.BeginReading(fromBegin), aSource1.EndReading(fromEnd), toBegin) = char(0);
aDest2 = ++toBegin;
*copy_string(aSource2.BeginReading(fromBegin), aSource2.EndReading(fromEnd), toBegin) = char(0);
aDest3 = ++toBegin;
*copy_string(aSource3.BeginReading(fromBegin), aSource3.EndReading(fromEnd), toBegin) = char(0);
aDest4 = ++toBegin;
*copy_string(aSource4.BeginReading(fromBegin), aSource4.EndReading(fromEnd), toBegin) = char(0);
aDestEnd = toBegin;
}
/******************************************************************************
* nsCookie:
* creation helper
******************************************************************************/
// This is a counter that keeps track of the last used creation time, each time
// we create a new nsCookie. This is nominally the time (in microseconds) the
// cookie was created, but is guaranteed to be monotonically increasing for
// cookies added at runtime after the database has been read in. This is
// necessary to enforce ordering among cookies whose creation times would
// otherwise overlap, since it's possible two cookies may be created at the same
// time, or that the system clock isn't monotonic.
static int64_t gLastCreationTime;
int64_t
nsCookie::GenerateUniqueCreationTime(int64_t aCreationTime)
{
// Check if the creation time given to us is greater than the running maximum
// (it should always be monotonically increasing).
if (aCreationTime > gLastCreationTime) {
gLastCreationTime = aCreationTime;
return aCreationTime;
}
// Make up our own.
return ++gLastCreationTime;
}
nsCookie *
nsCookie::Create(const nsACString &aName,
const nsACString &aValue,
const nsACString &aHost,
const nsACString &aPath,
int64_t aExpiry,
int64_t aLastAccessed,
int64_t aCreationTime,
bool aIsSession,
bool aIsSecure,
bool aIsHttpOnly)
{
// Ensure mValue contains a valid UTF-8 sequence. Otherwise XPConnect will
// truncate the string after the first invalid octet.
nsRefPtr<nsUTF8ConverterService> converter = new nsUTF8ConverterService();
nsAutoCString aUTF8Value;
converter->ConvertStringToUTF8(aValue, "UTF-8", false, true, 1, aUTF8Value);
// find the required string buffer size, adding 4 for the terminating nulls
const uint32_t stringLength = aName.Length() + aUTF8Value.Length() +
aHost.Length() + aPath.Length() + 4;
// allocate contiguous space for the nsCookie and its strings -
// we store the strings in-line with the nsCookie to save allocations
void *place = ::operator new(sizeof(nsCookie) + stringLength);
if (!place)
return nullptr;
// assign string members
char *name, *value, *host, *path, *end;
name = static_cast<char *>(place) + sizeof(nsCookie);
StrBlockCopy(aName, aUTF8Value, aHost, aPath,
name, value, host, path, end);
// If the creationTime given to us is higher than the running maximum, update
// our maximum.
if (aCreationTime > gLastCreationTime)
gLastCreationTime = aCreationTime;
// construct the cookie. placement new, oh yeah!
return new (place) nsCookie(name, value, host, path, end,
aExpiry, aLastAccessed, aCreationTime,
aIsSession, aIsSecure, aIsHttpOnly);
}
size_t
nsCookie::SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
{
// There is no need to measure the sizes of the individual string
// members, since the strings are stored in-line with the nsCookie.
return aMallocSizeOf(this);
}
/******************************************************************************
* nsCookie:
* xpcom impl
******************************************************************************/
// xpcom getters
NS_IMETHODIMP nsCookie::GetName(nsACString &aName) { aName = Name(); return NS_OK; }
NS_IMETHODIMP nsCookie::GetValue(nsACString &aValue) { aValue = Value(); return NS_OK; }
NS_IMETHODIMP nsCookie::GetHost(nsACString &aHost) { aHost = Host(); return NS_OK; }
NS_IMETHODIMP nsCookie::GetRawHost(nsACString &aHost) { aHost = RawHost(); return NS_OK; }
NS_IMETHODIMP nsCookie::GetPath(nsACString &aPath) { aPath = Path(); return NS_OK; }
NS_IMETHODIMP nsCookie::GetExpiry(int64_t *aExpiry) { *aExpiry = Expiry(); return NS_OK; }
NS_IMETHODIMP nsCookie::GetIsSession(bool *aIsSession) { *aIsSession = IsSession(); return NS_OK; }
NS_IMETHODIMP nsCookie::GetIsDomain(bool *aIsDomain) { *aIsDomain = IsDomain(); return NS_OK; }
NS_IMETHODIMP nsCookie::GetIsSecure(bool *aIsSecure) { *aIsSecure = IsSecure(); return NS_OK; }
NS_IMETHODIMP nsCookie::GetIsHttpOnly(bool *aHttpOnly) { *aHttpOnly = IsHttpOnly(); return NS_OK; }
NS_IMETHODIMP nsCookie::GetStatus(nsCookieStatus *aStatus) { *aStatus = 0; return NS_OK; }
NS_IMETHODIMP nsCookie::GetPolicy(nsCookiePolicy *aPolicy) { *aPolicy = 0; return NS_OK; }
NS_IMETHODIMP nsCookie::GetCreationTime(int64_t *aCreation){ *aCreation = CreationTime(); return NS_OK; }
NS_IMETHODIMP nsCookie::GetLastAccessed(int64_t *aTime) { *aTime = LastAccessed(); return NS_OK; }
// compatibility method, for use with the legacy nsICookie interface.
// here, expires == 0 denotes a session cookie.
NS_IMETHODIMP
nsCookie::GetExpires(uint64_t *aExpires)
{
if (IsSession()) {
*aExpires = 0;
} else {
*aExpires = Expiry() > 0 ? Expiry() : 1;
}
return NS_OK;
}
NS_IMPL_ISUPPORTS(nsCookie, nsICookie2, nsICookie)
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