commit b526d8a6dcd446e25330681d5af9ca448cca9ae6 Author: Alex Catarineu acat@torproject.org Date: Wed Oct 16 23:01:12 2019 +0200

Bug 31740: Remove some unnecessary RemoteSettings instances

More concretely, SearchService.jsm 'hijack-blocklists' and url-classifier-skip-urls.

Avoid creating instance for 'anti-tracking-url-decoration'.

If prefs are disabling their usage, avoid creating instances for 'cert-revocations' and 'intermediates'.

Do not ship JSON dumps for collections we do not expect to need. For the ones in the 'main' bucket, this prevents them from being synced unnecessarily (the code in remote-settings does so for collections in the main bucket for which a dump or local data exists). For the collections in the other buckets, we just save some size by not shipping their dumps.

We also clear the collections database on the v2 -> v3 migration. --- .../url-classifier/UrlClassifierFeatureBase.cpp | 2 +- netwerk/url-classifier/components.conf | 6 ------ security/manager/ssl/RemoteSecuritySettings.jsm | 22 ++++++++++++++++++++++ services/settings/IDBHelpers.jsm | 4 ++++ services/settings/dumps/blocklists/moz.build | 1 - services/settings/dumps/main/moz.build | 5 ----- services/settings/dumps/security-state/moz.build | 1 - .../components/antitracking/antitracking.manifest | 2 +- toolkit/components/antitracking/components.conf | 7 ------- toolkit/components/search/SearchService.jsm | 2 -- 10 files changed, 28 insertions(+), 24 deletions(-)

diff --git a/netwerk/url-classifier/UrlClassifierFeatureBase.cpp b/netwerk/url-classifier/UrlClassifierFeatureBase.cpp index 07da1fd07374..48bcc7d10af9 100644 --- a/netwerk/url-classifier/UrlClassifierFeatureBase.cpp +++ b/netwerk/url-classifier/UrlClassifierFeatureBase.cpp @@ -78,7 +78,7 @@ void UrlClassifierFeatureBase::InitializePreferences() {

nsCOMPtr<nsIUrlClassifierExceptionListService> exceptionListService = do_GetService("@mozilla.org/url-classifier/exception-list-service;1"); - if (NS_WARN_IF(!exceptionListService)) { + if (!exceptionListService) { return; }

diff --git a/netwerk/url-classifier/components.conf b/netwerk/url-classifier/components.conf index 03a02f0ebeab..b2e667247317 100644 --- a/netwerk/url-classifier/components.conf +++ b/netwerk/url-classifier/components.conf @@ -13,10 +13,4 @@ Classes = [ 'constructor': 'mozilla::net::ChannelClassifierService::GetSingleton', 'headers': ['mozilla/net/ChannelClassifierService.h'], }, - { - 'cid': '{b9f4fd03-9d87-4bfd-9958-85a821750ddc}', - 'contract_ids': ['@mozilla.org/url-classifier/exception-list-service;1'], - 'jsm': 'resource://gre/modules/UrlClassifierExceptionListService.jsm', - 'constructor': 'UrlClassifierExceptionListService', - }, ] diff --git a/security/manager/ssl/RemoteSecuritySettings.jsm b/security/manager/ssl/RemoteSecuritySettings.jsm index 3fedd43ed9be..fd2b69bc6a4f 100644 --- a/security/manager/ssl/RemoteSecuritySettings.jsm +++ b/security/manager/ssl/RemoteSecuritySettings.jsm @@ -350,6 +350,16 @@ var RemoteSecuritySettings = {

class IntermediatePreloads { constructor() { + this.maybeInit(); + } + + maybeInit() { + if ( + this.client || + !Services.prefs.getBoolPref(INTERMEDIATES_ENABLED_PREF, true) + ) { + return; + } this.client = RemoteSettings( Services.prefs.getCharPref(INTERMEDIATES_COLLECTION_PREF), { @@ -379,6 +389,7 @@ class IntermediatePreloads { ); return; } + this.maybeInit();

// Download attachments that are awaiting download, up to a max. const maxDownloadsPerRun = Services.prefs.getIntPref( @@ -709,6 +720,16 @@ function compareFilters(filterA, filterB) {

class CRLiteFilters { constructor() { + this.maybeInit(); + } + + maybeInit() { + if ( + this.client || + !Services.prefs.getBoolPref(CRLITE_FILTERS_ENABLED_PREF, true) + ) { + return; + } this.client = RemoteSettings( Services.prefs.getCharPref(CRLITE_FILTERS_COLLECTION_PREF), { @@ -734,6 +755,7 @@ class CRLiteFilters { ); return; } + this.maybeInit(); let current = await this.client.db.list(); let fullFilters = current.filter(filter => !filter.incremental); if (fullFilters.length < 1) { diff --git a/services/settings/IDBHelpers.jsm b/services/settings/IDBHelpers.jsm index 5dc59c3687ef..010a5ea82987 100644 --- a/services/settings/IDBHelpers.jsm +++ b/services/settings/IDBHelpers.jsm @@ -188,6 +188,10 @@ async function openIDB(allowUpgrades = true) { }); } if (event.oldVersion < 3) { + // Clear existing stores for a fresh start + transaction.objectStore("records").clear(); + transaction.objectStore("timestamps").clear(); + transaction.objectStore("collections").clear(); // Attachment store db.createObjectStore("attachments", { keyPath: ["cid", "attachmentId"], diff --git a/services/settings/dumps/blocklists/moz.build b/services/settings/dumps/blocklists/moz.build index 1683ab6aafa4..dd0bad30f19a 100644 --- a/services/settings/dumps/blocklists/moz.build +++ b/services/settings/dumps/blocklists/moz.build @@ -9,7 +9,6 @@ with Files('**'):

# The addons blocklist is also in mobile/android/installer/package-manifest.in FINAL_TARGET_FILES.defaults.settings.blocklists += ['addons-bloomfilters.json', - 'addons.json', 'gfx.json', 'plugins.json']

diff --git a/services/settings/dumps/main/moz.build b/services/settings/dumps/main/moz.build index 35e0bee898c4..e25fc4214042 100644 --- a/services/settings/dumps/main/moz.build +++ b/services/settings/dumps/main/moz.build @@ -3,15 +3,10 @@ # file, You can obtain one at http://mozilla.org/MPL/2.0/.

FINAL_TARGET_FILES.defaults.settings.main += [ - 'anti-tracking-url-decoration.json', 'example.json', 'hijack-blocklists.json', 'language-dictionaries.json', - 'search-config.json', 'search-default-override-allowlist.json', - 'sites-classification.json', - 'top-sites.json', - 'url-classifier-skip-urls.json', ]

if CONFIG['MOZ_BUILD_APP'] == 'browser': diff --git a/services/settings/dumps/security-state/moz.build b/services/settings/dumps/security-state/moz.build index d8f8227a0278..37410d0fb054 100644 --- a/services/settings/dumps/security-state/moz.build +++ b/services/settings/dumps/security-state/moz.build @@ -3,7 +3,6 @@ # file, You can obtain one at http://mozilla.org/MPL/2.0/.

FINAL_TARGET_FILES.defaults.settings['security-state'] += [ - 'intermediates.json', 'onecrl.json', ]

diff --git a/toolkit/components/antitracking/antitracking.manifest b/toolkit/components/antitracking/antitracking.manifest index 5eb37f9a3f99..872e6af07575 100644 --- a/toolkit/components/antitracking/antitracking.manifest +++ b/toolkit/components/antitracking/antitracking.manifest @@ -1 +1 @@ -category profile-after-change URLDecorationAnnotationsService @mozilla.org/tracking-url-decoration-service;1 process=main +# category profile-after-change URLDecorationAnnotationsService @mozilla.org/tracking-url-decoration-service;1 process=main diff --git a/toolkit/components/antitracking/components.conf b/toolkit/components/antitracking/components.conf index 74a8a21277d9..04b2ba1b815f 100644 --- a/toolkit/components/antitracking/components.conf +++ b/toolkit/components/antitracking/components.conf @@ -11,13 +11,6 @@ Classes = [ 'jsm': 'resource://gre/modules/TrackingDBService.jsm', 'constructor': 'TrackingDBService', }, - { - 'cid': '{5874af6d-5719-4e1b-b155-ef4eae7fcb32}', - 'contract_ids': ['@mozilla.org/tracking-url-decoration-service;1'], - 'jsm': 'resource://gre/modules/URLDecorationAnnotationsService.jsm', - 'constructor': 'URLDecorationAnnotationsService', - 'processes': ProcessSelector.MAIN_PROCESS_ONLY, - }, { 'cid': '{90d1fd17-2018-4e16-b73c-a04a26fa6dd4}', 'contract_ids': ['@mozilla.org/purge-tracker-service;1'], diff --git a/toolkit/components/search/SearchService.jsm b/toolkit/components/search/SearchService.jsm index 95596cb1884d..b8d4f92470f8 100644 --- a/toolkit/components/search/SearchService.jsm +++ b/toolkit/components/search/SearchService.jsm @@ -252,8 +252,6 @@ SearchService.prototype = { // See if we have a settings file so we don't have to parse a bunch of XML. let settings = await this._settings.get();

- this._setupRemoteSettings().catch(Cu.reportError); - await this._loadEngines(settings);

// If we've got this far, but the application is now shutting down,