caps/DomainPolicy.cpp
author Armen Zambrano Gasparnian <armenzg@mozilla.com>
Wed, 27 Jul 2016 10:51:38 -0400
changeset 307562 9f5fbb3066c91cdab754c2222299016ba6f2af21
parent 270705 7ec70e0c699746cf72e03acadc09d0d5877423d0
child 310969 564549c354b038a465c0b3fc245da3cab8753eab
permissions -rw-r--r--
Bug 1288742 - Increase expiration date of all gecko decision artifacts bar image context tar balls. r=dustin Until now Gecko decision task artifacts would expire after a week. Unfortunately, some of these artifacts are needed in order for Treeherder to determine which tasks it can schedule on a given push. In this change, we're changing the expiration of all artifacts except those that are related to docker image optimizations, which, are very large files and we only want to keep for a week. MozReview-Commit-ID: 96ahyWmoI7W

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim: set ts=4 et sw=4 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/. */

#include "DomainPolicy.h"
#include "mozilla/dom/ContentParent.h"
#include "mozilla/ipc/URIUtils.h"
#include "mozilla/unused.h"
#include "nsIMessageManager.h"
#include "nsScriptSecurityManager.h"

namespace mozilla {

using namespace ipc;
using namespace dom;

NS_IMPL_ISUPPORTS(DomainPolicy, nsIDomainPolicy)

static nsresult
BroadcastDomainSetChange(DomainSetType aSetType, DomainSetChangeType aChangeType,
                         nsIURI* aDomain = nullptr)
{
    MOZ_ASSERT(XRE_IsParentProcess(),
               "DomainPolicy should only be exposed to the chrome process.");

    nsTArray<ContentParent*> parents;
    ContentParent::GetAll(parents);
    if (!parents.Length()) {
       return NS_OK;
    }

    OptionalURIParams uri;
    SerializeURI(aDomain, uri);

    for (uint32_t i = 0; i < parents.Length(); i++) {
        Unused << parents[i]->SendDomainSetChanged(aSetType, aChangeType, uri);
    }
    return NS_OK;
}

DomainPolicy::DomainPolicy() : mBlacklist(new DomainSet(BLACKLIST))
                             , mSuperBlacklist(new DomainSet(SUPER_BLACKLIST))
                             , mWhitelist(new DomainSet(WHITELIST))
                             , mSuperWhitelist(new DomainSet(SUPER_WHITELIST))
{
    if (XRE_IsParentProcess()) {
        BroadcastDomainSetChange(NO_TYPE, ACTIVATE_POLICY);
    }
}

DomainPolicy::~DomainPolicy()
{
    // The SSM holds a strong ref to the DomainPolicy until Deactivate() is
    // invoked, so we should never hit the destructor until that happens.
    MOZ_ASSERT(!mBlacklist && !mSuperBlacklist &&
               !mWhitelist && !mSuperWhitelist);
}


NS_IMETHODIMP
DomainPolicy::GetBlacklist(nsIDomainSet** aSet)
{
    nsCOMPtr<nsIDomainSet> set = mBlacklist.get();
    set.forget(aSet);
    return NS_OK;
}

NS_IMETHODIMP
DomainPolicy::GetSuperBlacklist(nsIDomainSet** aSet)
{
    nsCOMPtr<nsIDomainSet> set = mSuperBlacklist.get();
    set.forget(aSet);
    return NS_OK;
}

NS_IMETHODIMP
DomainPolicy::GetWhitelist(nsIDomainSet** aSet)
{
    nsCOMPtr<nsIDomainSet> set = mWhitelist.get();
    set.forget(aSet);
    return NS_OK;
}

NS_IMETHODIMP
DomainPolicy::GetSuperWhitelist(nsIDomainSet** aSet)
{
    nsCOMPtr<nsIDomainSet> set = mSuperWhitelist.get();
    set.forget(aSet);
    return NS_OK;
}

NS_IMETHODIMP
DomainPolicy::Deactivate()
{
    // Clear the hashtables first to free up memory, since script might
    // hold the doomed sets alive indefinitely.
    mBlacklist->Clear();
    mSuperBlacklist->Clear();
    mWhitelist->Clear();
    mSuperWhitelist->Clear();

    // Null them out.
    mBlacklist = nullptr;
    mSuperBlacklist = nullptr;
    mWhitelist = nullptr;
    mSuperWhitelist = nullptr;

    // Inform the SSM.
    nsScriptSecurityManager* ssm = nsScriptSecurityManager::GetScriptSecurityManager();
    if (ssm) {
        ssm->DeactivateDomainPolicy();
    }
    if (XRE_IsParentProcess()) {
        BroadcastDomainSetChange(NO_TYPE, DEACTIVATE_POLICY);
    }
    return NS_OK;
}

void
DomainPolicy::CloneDomainPolicy(DomainPolicyClone* aClone)
{
    aClone->active() = true;
    mBlacklist->CloneSet(&aClone->blacklist());
    mSuperBlacklist->CloneSet(&aClone->superBlacklist());
    mWhitelist->CloneSet(&aClone->whitelist());
    mSuperWhitelist->CloneSet(&aClone->superWhitelist());
}

static
void
CopyURIs(const InfallibleTArray<URIParams>& aDomains, nsIDomainSet* aSet)
{
    for (uint32_t i = 0; i < aDomains.Length(); i++) {
        nsCOMPtr<nsIURI> uri = DeserializeURI(aDomains[i]);
        aSet->Add(uri);
    }
}

void
DomainPolicy::ApplyClone(DomainPolicyClone* aClone)
{
    nsCOMPtr<nsIDomainSet> list;

    CopyURIs(aClone->blacklist(), mBlacklist);
    CopyURIs(aClone->whitelist(), mWhitelist);
    CopyURIs(aClone->superBlacklist(), mSuperBlacklist);
    CopyURIs(aClone->superWhitelist(), mSuperWhitelist);
}

static already_AddRefed<nsIURI>
GetCanonicalClone(nsIURI* aURI)
{
    nsCOMPtr<nsIURI> clone;
    nsresult rv = aURI->Clone(getter_AddRefs(clone));
    NS_ENSURE_SUCCESS(rv, nullptr);
    rv = clone->SetUserPass(EmptyCString());
    NS_ENSURE_SUCCESS(rv, nullptr);
    rv = clone->SetPath(EmptyCString());
    NS_ENSURE_SUCCESS(rv, nullptr);
    return clone.forget();
}

NS_IMPL_ISUPPORTS(DomainSet, nsIDomainSet)

NS_IMETHODIMP
DomainSet::Add(nsIURI* aDomain)
{
    nsCOMPtr<nsIURI> clone = GetCanonicalClone(aDomain);
    NS_ENSURE_TRUE(clone, NS_ERROR_FAILURE);
    mHashTable.PutEntry(clone);
    if (XRE_IsParentProcess())
        return BroadcastDomainSetChange(mType, ADD_DOMAIN, aDomain);

    return NS_OK;
}

NS_IMETHODIMP
DomainSet::Remove(nsIURI* aDomain)
{
    nsCOMPtr<nsIURI> clone = GetCanonicalClone(aDomain);
    NS_ENSURE_TRUE(clone, NS_ERROR_FAILURE);
    mHashTable.RemoveEntry(clone);
    if (XRE_IsParentProcess())
        return BroadcastDomainSetChange(mType, REMOVE_DOMAIN, aDomain);

    return NS_OK;
}

NS_IMETHODIMP
DomainSet::Clear()
{
    mHashTable.Clear();
    if (XRE_IsParentProcess())
        return BroadcastDomainSetChange(mType, CLEAR_DOMAINS);

    return NS_OK;
}

NS_IMETHODIMP
DomainSet::Contains(nsIURI* aDomain, bool* aContains)
{
    *aContains = false;
    nsCOMPtr<nsIURI> clone = GetCanonicalClone(aDomain);
    NS_ENSURE_TRUE(clone, NS_ERROR_FAILURE);
    *aContains = mHashTable.Contains(clone);
    return NS_OK;
}

NS_IMETHODIMP
DomainSet::ContainsSuperDomain(nsIURI* aDomain, bool* aContains)
{
    *aContains = false;
    nsCOMPtr<nsIURI> clone = GetCanonicalClone(aDomain);
    NS_ENSURE_TRUE(clone, NS_ERROR_FAILURE);
    nsAutoCString domain;
    nsresult rv = clone->GetHost(domain);
    NS_ENSURE_SUCCESS(rv, rv);
    while (true) {
        // Check the current domain.
        if (mHashTable.Contains(clone)) {
            *aContains = true;
            return NS_OK;
        }

        // Chop off everything before the first dot, or break if there are no
        // dots left.
        int32_t index = domain.Find(".");
        if (index == kNotFound)
            break;
        domain.Assign(Substring(domain, index + 1));
        rv = clone->SetHost(domain);
        NS_ENSURE_SUCCESS(rv, rv);
    }

    // No match.
    return NS_OK;

}

NS_IMETHODIMP
DomainSet::GetType(uint32_t* aType)
{
    *aType = mType;
    return NS_OK;
}

void
DomainSet::CloneSet(InfallibleTArray<URIParams>* aDomains)
{
    for (auto iter = mHashTable.Iter(); !iter.Done(); iter.Next()) {
        nsIURI* key = iter.Get()->GetKey();

        URIParams uri;
        SerializeURI(key, uri);

        aDomains->AppendElement(uri);
    }
}

} /* namespace mozilla */