LGTM3. Good luck with the launch, I've been excited about this for a while
and I'm looking forward to reducing our attack surface.

-mike


On Wed, May 3, 2023 at 3:21 PM Mike Taylor <miketa...@chromium.org> wrote:

> LGTM2 - kudos to the team for the very detailed compat and risk analysis,
> as well as proactively engaging in outreach. Good luck. :)
> On 5/3/23 6:59 AM, Yoav Weiss wrote:
>
> LGTM1
>
> Thanks for the details analysis. The rollout plan seems reasonable, and
> the low effective breakage gives me hope that this would stick.
>
> On Friday, April 28, 2023 at 10:26:20 PM UTC+2 Ayu Ishii wrote:
>
>> Contact emails a...@chromium.org, mo...@chromium.org
>> Specification https://www.w3.org/TR/webdatabase
>> Design docs
>> https://developer.chrome.com/blog/deprecating-web-sql
>>
>> [Google Internal]
>> https://docs.google.com/document/d/1bTj_nDqbdvE102sCm3KuwvN5c_HneLNPl9mmPeUjG4M/edit?usp=sharing
>> [Google Internal]
>> https://docs.google.com/document/d/1CDdEO65pCIo60NM8CWHNNN7EunJ-wd8v1dGUxTOBJrM/edit?resourcekey=0-R0fxP199QQ-8gnMqzmQyrw
>>
>> Summary The Web SQL Database standard was first proposed in April 2009
>> and abandoned in November 2010. It was implemented in WebKit in 2008 and
>> shipped in Chrome and Safari, on both desktop and mobile. Gecko and
>> EdgeHTML never implemented this feature and WebKit unshipped it in 2019.
>> The W3C encouraged those needing web databases to adopt Indexed Database.
>> Since its release, it has been incredibly difficult to keep our users
>> secure. SQLite was not designed to run untrusted SQL statements, and yet
>> with Web SQL we have to do exactly this. Keeping up with security and
>> stability fixes dictates updating SQLite in Chromium and impacts the
>> feature’s stability. In 2022 alone, we updated SQLite 11 times. This comes
>> in direct conflict with Web SQL’s requirement of behaving exactly as SQLite
>> 3.6.19, and with the lack of a SQL specification in Web SQL, we cannot make
>> any such compatibility guarantees.
>> With SQLite WASM
>> <https://developer.chrome.com/blog/sqlite-wasm-in-the-browser-backed-by-the-origin-private-file-system/>
>> as an effective replacement for web developers requiring a relational
>> database, we would like to remove Web SQL entirely.
>>
>> Target timeline
>>
>> M101 - 123 - Enterprise Policy
>> <https://chromeenterprise.google/policies/#WebSQLAccess>
>>
>> M115 - Add deprecation message
>>
>> M118-123  - Deprecation trial
>>
>> M119 - Ship removal
>>
>> Usage and Risk
>>
>> Overall usage still shows a high percentage of 0.34% of page loads
>> <https://chromestatus.com/metrics/feature/timeline/popularity/2962>,
>> however our analysis has concluded that very little usage is for actual
>> storage.
>>
>> Through analyzing sites from HTTPArchives, we found a majority of its
>> usage is from outdated incognito detection
>> <https://stackoverflow.com/questions/48169810/how-to-detect-private-browsing-in-ios-11-safari-as-well-as-older-versions-of-sa>
>> (e.g. Criteo <https://static.criteo.net/js/ld/ld.js>, Reddit
>> <https://gist.github.com/ayuishii/b64b9c41152940089f8ac480f82d4e3e>),
>> and fingerprinting (e.g. Fingerprintjs
>> <https://github.com/fingerprintjs/fingerprintjs>, evercookie
>> <https://github.com/samyk/evercookie>).
>>
>> There are JS storage libraries that became popular around the time that
>> Web SQL was introduced which use the feature. Oftentimes their usage is
>> part of a fallback chain, where on modern browsers other storage
>> technologies like localStorage or IndexedDB would be chosen before Web SQL.
>> Examples of such libraries are localForage
>> <https://github.com/localForage/localForage>, cordova-sqlite-storage
>> <https://github.com/storesafe/cordova-sqlite-storage>, Sencha Touch
>> <https://docs.sencha.com/touch/2.4/2.4.2-apidocs/#!/api/Ext.data.proxy.Sql>.
>> Many, like localForage and cordova-sqlite-storage, gate its usage on
>> feature detection due to its availability only on Chromium browsers.
>> However older versions of Sencha Touch look as though they may not have
>> been gated. Sencha Touch has since removed its SQL feature which depends on
>> Web SQL in their version released in 2015
>> <https://docs.sencha.com/extjs/6.0.0/guides/upgrades_migrations/modern_upgrade_guide.html#upgrades_migrations-_-modern_upgrade_guide_-_ext_data_proxy_sql_has_been_removed>
>> .
>>
>> Our conclusion from our HTTPArchives analysis
>> <https://docs.google.com/document/d/18AGCT9YgfacSxZ5pPAkym6iUWGl72zVXkELKMQKnEPM/edit#bookmark=id.tmke6f1n07cr>
>> is that we were only able to identify one site that is not gated by feature
>> detection, and one site with significant breakage. We’ve notified open
>> source libraries of Web SQL deprecation, and plan to reach out to site
>> owners we’ve classified as breakage.
>>
>> Analyzing extensions usage, we’ve identified 74% of extensions that use
>> Web SQL
>> <https://docs.google.com/document/d/18AGCT9YgfacSxZ5pPAkym6iUWGl72zVXkELKMQKnEPM/edit#bookmark=id.rxdibl42y942>
>> are from JS storage libraries like localForage
>> <https://github.com/localForage/localForage> and cordova-sqlite-storage
>> <https://github.com/storesafe/cordova-sqlite-storage>. However there
>> were a higher number of usages that rely on Web SQL heavily
>> <https://docs.google.com/document/d/18AGCT9YgfacSxZ5pPAkym6iUWGl72zVXkELKMQKnEPM/edit#bookmark=id.hrkiilgxtp1y>,
>> and many that are not gated by feature detection
>> <https://docs.google.com/document/d/18AGCT9YgfacSxZ5pPAkym6iUWGl72zVXkELKMQKnEPM/edit#bookmark=id.vw9prsbuovyq>
>> as well. We have identified these extensions and plan to contact the
>> developers on this deprecation.
>>
>> Further analysis for the web platform and extensions can be found in our
>> public facing Web SQL usage analysis doc
>> <https://docs.google.com/document/d/18AGCT9YgfacSxZ5pPAkym6iUWGl72zVXkELKMQKnEPM/edit?usp=sharing>
>> .
>>
>> For those that would need to migrate, we expect a significant amount of
>> work will be required. Therefore we would like to show deprecation messages
>> early, and make a long deprecation trial available to allow developers to
>> plan for their migration before full removal. We’ve provided steps for
>> testing Web SQL removal for a website
>> <https://docs.google.com/document/d/1EMJSmKDVGVv0sbsRDz1b8-tTkzv9yi4S30-rzEiK9AQ/edit?usp=sharing>,
>> and a guide to SQLite WASM
>> <https://developer.chrome.com/blog/sqlite-wasm-in-the-browser-backed-by-the-origin-private-file-system/>
>> and for migrating a database
>> <https://developer.chrome.com/blog/from-web-sql-to-sqlite-wasm/> for
>> developers to follow to start their migration.
>>
>> Communications
>>
>> What we’ve done so far:
>>
>>    -
>>
>>    Worked with internal partners to move major products off of Web SQL
>>    (Completed in 2022)
>>    -
>>
>>    Communicated to edu/enterprise partners of its planned removal (Aug,
>>    2022)
>>    -
>>
>>       No usages found from this process
>>       -
>>
>>    Communicated with known external partners using Web SQL on its
>>    planned removal
>>    -
>>
>>       All on board with migrating to WASM + SQLite
>>       -
>>
>>    Published an article on the state of Web SQL and its deprecation
>>    <https://developer.chrome.com/blog/deprecating-web-sql/> (Aug, 2022)
>>    -
>>
>>    Published an article on its recommended replacement, SQLite WASM
>>    
>> <https://developer.chrome.com/blog/sqlite-wasm-in-the-browser-backed-by-the-origin-private-file-system/>
>>    (Jan, 2023)
>>    -
>>
>>    Removed Web SQL in third party contexts in M97
>>    -
>>
>>    Removed Web SQL in non-secure contexts in M110
>>    -
>>
>>    Published an article for migrating a database from Web SQL to SQLite
>>    Wasm <https://developer.chrome.com/blog/from-web-sql-to-sqlite-wasm/>
>>    (Mar, 2023)
>>    -
>>
>>    [InProgress] Communicate to identified developers in extensions /
>>    HTTPArchives usage
>>
>>
>> Related Intents
>>
>> Intent to Deprecate and Remove Web SQL in 3rd Party Contexts
>> <https://groups.google.com/a/chromium.org/g/blink-dev/c/TM6YDx1Hh08>
>>
>> Intent to Deprecate and Remove Web SQL in Non-Secure contexts
>> <https://groups.google.com/u/1/a/chromium.org/g/blink-dev/c/xdcl4yc8Ihk>
>>
>> Blink component Blink>Storage>Web SQL
>> <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3EStorage%3EWebSQL>
>> Search tags Web SQL <https://chromestatus.com/features#tags:websql>
>> Risks
>> Interoperability and Compatibility Removing Web SQL will align Chromium
>> based browser behavior to all other browser engines. Currently Chromium is
>> the only browser engine that supports Web SQL. Because of this, most
>> websites gate the usage of Web SQL by feature detection.
>> Gecko: N/A Never implemented
>> WebKit: Unshipped (
>> https://github.com/WebKit/WebKit/commit/761bce943c0696a6bb93116eb0576ed07dbfdc65)
>> Removed in 2019
>> Web developers: N/A
>>
>> Security Currently SQLite in Chromium is updated very frequently,
>> sometimes in multiple consecutive milestones. The frequency is defined by
>> stability or security issues found in the SQLite library. Bad security
>> issues have historically surfaced such as Magellan 2.0
>> <https://threatpost.com/google-chrome-affected-by-magellan-2-0-flaws/151446/>
>> that had been publicized in tech news in 2019, among others.The storage
>> team needs to respond quickly to these issues, and update the library when
>> issues are found with help from the SQLite team and Release and Security
>> TPMs.
>> Removing Web SQL will permanently remove the attack vector of malicious
>> SQL statements.
>> WebView application risks While we see a 0.02% usage on WebView, we are
>> unable to verify the nature of this usage. However now that Deprecation
>> Trials are supported for WebView, we think the risk of removal is
>> significantly reduced.
>> Goals for Deprecation Trial
>>
>> The goal for the deprecation trial is to allow for a 6 month window after
>> removal to let developers remove their usage of Web SQL. We may extend this
>> window depending on feedback from participating developers. Our
>> recommendation is for developers to switch to SQLite compiled to
>> WebAssembly backed by the Origin Private File System. We’ve published 
>> guidance
>> for this migration
>> <https://developer.chrome.com/blog/sqlite-wasm-in-the-browser-backed-by-the-origin-private-file-system/>
>> in our developer blog.
>>
>> Debuggability Planning to add a deprecation message in the console.
>> Will this feature be supported on all six Blink platforms (Windows, Mac,
>> Linux, Chrome OS, Android, and Android WebView)? Yes, removal in all
>> Is this feature fully tested by web-platform-tests
>> <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>?
>> No (Web SQL tested in web_tests
>> <https://source.chromium.org/chromium/chromium/src/+/main:third_party/blink/web_tests/storage/websql/>)
>>
>> DevTrial instructions Steps on how to test your site with Web SQL
>> removed.
>> https://docs.google.com/document/d/1EMJSmKDVGVv0sbsRDz1b8-tTkzv9yi4S30-rzEiK9AQ/edit?usp=sharing
>>
>> Flag name web-sql-access
>> Requires code in //chrome? False
>> Tracking bug https://crbug.com/695592
>>
>> Link to entry on the Chrome Platform Status
>> https://chromestatus.com/feature/5134293578285056
>>
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