/* 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 "RedirectChannelRegistrar.h"
#include "mozilla/ClearOnShutdown.h"
#include "mozilla/StaticPtr.h"
#include "nsThreadUtils.h"
namespace mozilla {
namespace net {
StaticRefPtr<RedirectChannelRegistrar> RedirectChannelRegistrar::gSingleton;
NS_IMPL_ISUPPORTS(RedirectChannelRegistrar, nsIRedirectChannelRegistrar)
RedirectChannelRegistrar::RedirectChannelRegistrar()
: mRealChannels(
32),
mParentChannels(
32),
mLock(
"RedirectChannelRegistrar") {
MOZ_ASSERT(!gSingleton);
}
// static
already_AddRefed<nsIRedirectChannelRegistrar>
RedirectChannelRegistrar::GetOrCreate() {
MOZ_ASSERT(NS_IsMainThread());
if (!gSingleton) {
gSingleton =
new RedirectChannelRegistrar();
ClearOnShutdown(&gSingleton);
}
return do_AddRef(gSingleton);
}
NS_IMETHODIMP
RedirectChannelRegistrar::RegisterChannel(nsIChannel* channel, uint64_t id,
uint64_t aContentParentId) {
MutexAutoLock lock(mLock);
mRealChannels.InsertOrUpdate(id, channel);
mChannelOwners.InsertOrUpdate(id, aContentParentId);
return NS_OK;
}
NS_IMETHODIMP
RedirectChannelRegistrar::GetRegisteredChannel(uint64_t id,
nsIChannel** _retval) {
MutexAutoLock lock(mLock);
if (!mRealChannels.Get(id, _retval))
return NS_ERROR_NOT_AVAILABLE;
return NS_OK;
}
NS_IMETHODIMP
RedirectChannelRegistrar::LinkChannels(uint64_t id, uint64_t aContentParentId,
nsIParentChannel* channel,
nsIChannel** _retval) {
MutexAutoLock lock(mLock);
// Only hand back the registered channel if it was registered for the
// requesting content process, since the id is supplied by the content
// process.
uint64_t owner;
if (!mChannelOwners.Get(id, &owner) || owner != aContentParentId) {
return NS_ERROR_NOT_AVAILABLE;
}
if (!mRealChannels.Get(id, _retval))
return NS_ERROR_NOT_AVAILABLE;
mParentChannels.InsertOrUpdate(id, channel);
return NS_OK;
}
NS_IMETHODIMP
RedirectChannelRegistrar::GetParentChannel(uint64_t id,
nsIParentChannel** _retval) {
MutexAutoLock lock(mLock);
if (!mParentChannels.Get(id, _retval))
return NS_ERROR_NOT_AVAILABLE;
return NS_OK;
}
NS_IMETHODIMP
RedirectChannelRegistrar::DeregisterChannels(uint64_t id) {
MutexAutoLock lock(mLock);
mRealChannels.Remove(id);
mParentChannels.Remove(id);
mChannelOwners.Remove(id);
return NS_OK;
}
}
// namespace net
}
// namespace mozilla