d05cffb65c67cefd72c580a4e1db0b4694a0ee84 to 2bb74106a03738c80e384ee267ef57bc40ab8c92 · OSS / Libraries / Go / Services / Job Queues

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.config/chglog/CHANGELOG.tpl.md

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		{{ range .Versions }}
		## {{ if .Tag.Previous }}[{{ .Tag.Name }}]{{ else }}{{ .Tag.Name }}{{ end }} - {{ datetime "2006-01-02" .Tag.Date }}

		{{ range .CommitGroups -}}

		### {{ .Title }}

		{{ range .Commits -}}
		- {{ if .Scope }}{{ .Scope }}: {{ end }}{{ .Subject }}
		{{ end }}{{ end -}}

		{{ end -}}

.config/chglog/config.yml

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		style: gitlab
		template: CHANGELOG.tpl.md
		info:
		title: CHANGELOG
		repository_url: https://gitlab.schukai.com/oss/libraries/go/application/configuration
		options:
		commits:
		filters:
		Type:
		- feat
		- fix
		- doc
		- refactor
		- perf
		- test
		- chore
		## deprecated types and typos
		- docs
		- documentation
		- feat
		- added
		- add
		- bugfix
		- revert
		- update
		- updates
		- change
		- changed
		commit_groups:
		title_maps:
		feat: Add Features
		fix: Bug Fixes
		doc: Documentation
		refactor: Code Refactoring
		perf: Performance Improvements
		test: Tests
		## Chore is used for all other changes that don't fit in the other categories
		chore: Changes
		## deprecated types and typos
		docs: Documentation
		documentation: Documentation
		added: Add Features
		add: Add Features
		bugfix: Bug Fixes
		revert: Reverts
		update: Changes
		updates: Changes
		change: Changes
		changed: Changes
		header:
		pattern: "^(\\w)(?:\$([\\w\\$\\.\\-\\\\s])\$)?\\:\\s(.)$"
		pattern_maps:
		- Type
		- Scope
		- Subject
		notes:
		keywords:
		- BREAKING CHANGE

.envrc

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		watch_file "./flake.nix" "./nix/scripts/build-cover-report.nix" "./nix/scripts/deploy.nix" "./nix/scripts/check-code.nix" "./nix/scripts/common.nix" "./nix/scripts/run-tests.nix" "./nix/scripts/run-ci-tests.nix" "./nix/scripts/run-extended-tests.nix" "./nix/scripts/clean-up.nix" "./nix/scripts/go-task.nix"
		watch_file ./flake.nix ./nix/scripts/.nix ./nix/config/.nix ./nix/packages/*.nix
		use flake
		No newline at end of file

.gitignore

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		# Created by https://www.toptal.com/developers/gitignore/api/intellij,go
		# Edit at https://www.toptal.com/developers/gitignore?templates=intellij,go

		### Go ###
		# If you prefer the allow list template instead of the deny list, see community template:
		# https://github.com/github/gitignore/blob/main/community/Golang/Go.AllowList.gitignore
		#
		# Binaries for programs and plugins
		*.exe
		*.exe~
		*.dll
		*.so
		*.dylib

		# Test binary, built with `go test -c`
		*.test

		# Output of the go coverage tool, specifically when used with LiteIDE
		*.out

		# Dependency directories (remove the comment below to include it)
		# vendor/

		# Go workspace file
		go.work

		### Go Patch ###
		/vendor/
		/Godeps/

		### Intellij ###
		# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio, WebStorm and Rider
		# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839

		# User-specific stuff
		.idea/**/workspace.xml
		.idea/**/tasks.xml
		.idea/**/usage.statistics.xml
		.idea/**/dictionaries
		.idea/**/shelf

		# AWS User-specific
		.idea/**/aws.xml

		# Generated files
		.idea/**/contentModel.xml

		# Sensitive or high-churn files
		.idea/**/dataSources/
		.idea/**/dataSources.ids
		.idea/**/dataSources.local.xml
		.idea/**/sqlDataSources.xml
		.idea/**/dynamic.xml
		.idea/**/uiDesigner.xml
		.idea/**/dbnavigator.xml

		# Gradle
		.idea/**/gradle.xml
		.idea/**/libraries

		# Gradle and Maven with auto-import
		# When using Gradle or Maven with auto-import, you should exclude module files,
		# since they will be recreated, and may cause churn. Uncomment if using
		# auto-import.
		# .idea/artifacts
		# .idea/compiler.xml
		# .idea/jarRepositories.xml
		# .idea/modules.xml
		# .idea/*.iml
		# .idea/modules
		# *.iml
		# *.ipr

		# CMake
		cmake-build-*/

		# Mongo Explorer plugin
		.idea/**/mongoSettings.xml

		# File-based project format
		*.iws

		# IntelliJ
		out/

		# mpeltonen/sbt-idea plugin
		.idea_modules/

		# JIRA plugin
		atlassian-ide-plugin.xml

		# Cursive Clojure plugin
		.idea/replstate.xml

		# SonarLint plugin
		.idea/sonarlint/

		# Crashlytics plugin (for Android Studio and IntelliJ)
		com_crashlytics_export_strings.xml
		crashlytics.properties
		crashlytics-build.properties
		fabric.properties

		# Editor-based Rest Client
		.idea/httpRequests

		# Android studio 3.1+ serialized cache file
		.idea/caches/build_file_checksums.ser

		### Intellij Patch ###
		# Comment Reason: https://github.com/joeblau/gitignore.io/issues/186#issuecomment-215987721

		# *.iml
		# modules.xml
		# .idea/misc.xml
		# *.ipr

		# Sonarlint plugin
		# https://plugins.jetbrains.com/plugin/7973-sonarlint
		.idea/**/sonarlint/

		# SonarQube Plugin
		# https://plugins.jetbrains.com/plugin/7238-sonarqube-community-plugin
		.idea/**/sonarIssues.xml

		# Markdown Navigator plugin
		# https://plugins.jetbrains.com/plugin/7896-markdown-navigator-enhanced
		.idea/**/markdown-navigator.xml
		.idea/**/markdown-navigator-enh.xml
		.idea/**/markdown-navigator/

		# Cache file creation bug
		# See https://youtrack.jetbrains.com/issue/JBR-2257
		.idea/$CACHE_FILE$

		# CodeStream plugin
		# https://plugins.jetbrains.com/plugin/12206-codestream
		.idea/codestream.xml

		# Azure Toolkit for IntelliJ plugin
		# https://plugins.jetbrains.com/plugin/8053-azure-toolkit-for-intellij
		.idea/**/azureSettings.xml

		# End of https://www.toptal.com/developers/gitignore/api/intellij,go
		# Devenv
		.devenv*
		devenv.local.nix
		@@ -9,8 +152,4 @@ devenv.local.nix
		# pre-commit
		.pre-commit-config.yaml

		smell.go
		/.attach_*
		.direnv/
		.direnv/
		.back/
		/Session.vim

.gitlab-ci.yml

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		image: docker-registry.schukai.com:443/nixos-ci-devenv:latest


		variables:
		NIXOS_VERSION: "23.11"
		NIXPKGS_ALLOW_UNFREE: "1"
		NIXPKGS_ALLOW_INSECURE: "1"
		GIT_DEPTH: 10
		GIT_SUBMODULE_STRATEGY: normal
		GIT_SUBMODULE_DEPTH: 1


		stages:
		- test
		- deploy
		- release

		before_script:
		- git config --global user.email "${GITLAB_USER_EMAIL}"
		- git config --global user.name "${GITLAB_USER_NAME:-"Gitlab CI"}"
		- git config --global credential.helper '!f() { echo "username=gitlab-ci-token"; echo "password=${CI_JOB_TOKEN}"; }; f'
		- git config --global pull.rebase true
		- git config --global http.sslVerify "false"


		after_script:
		- if [ -f .env-gitlab-ci ]; then rm .env-gitlab-ci; fi
		- nix develop .#gitlab --command clean-up

		test:
		tests:
		stage: test
		tags:
		- nixos
		- nixos-gen3
		script:
		- nix develop --command run-ci-tests

		cache:
		- key: nixos
		- nix develop .#gitlab --command run-ci-tests
		artifacts:
		paths:
		- /nix/store
		- last-phpunit-result.xml

		deploy:
		stage: deploy
		release:
		stage: release
		tags:
		- nixos
		- nixos-gen3
		script:
		- nix develop --command deploy
		after_script:
		- nix develop --command clean-up

		- nix develop .#gitlab --command release
		when: on_success

		cache:
		- key: nixos
		paths:
		- /nix/store
		rules:
		- if: $CI_COMMIT_BRANCH == "master"

		No newline at end of file

.gitlab/issue_templates/rfc.md

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		# RFC: [Titel deines Vorschlags]

		Kurze Beschreibung des Inhalts und Ziels dieses RFC.

		### Zweig:
		In welchem Zweig ist/wird der RFC implementiert?

		## Reviewer
		Liste Personen oder Teams auf, die für das Review dieses RFC verantwortlich sind.

		- [ ] @reviewer1

		## Hintergrund
		Erläutere den Kontext und die Probleme, die zur Erstellung dieses RFC geführt haben.

		## Grundlegende Beispiele
		Biete einfache Beispiele, die die vorgeschlagenen Änderungen veranschaulichen.

		## Motivation
		Beschreibe, warum diese Änderung notwendig ist. Welche Probleme werden gelöst? Was sind die Vorteile?

		## Vorgeschlagene Lösung
		Detaillierte Beschreibung der vorgeschlagenen Features und Funktionen.

		## Detailliertes Design und Umsetzung
		Erkläre technische Details, Implementierungsschritte und wie die Lösung integriert werden soll.

		## Roadmap und benötigte Ressourcen
		Skizziere die geplanten Schritte zur Implementierung und liste benötigte Ressourcen auf.

		## Vor- und Nachteile / Einschränkungen
		Diskutiere die möglichen Nachteile oder Limitationen des Vorschlags sowie die Risiken.

		## Alternativen
		Stelle andere überlegte Lösungen vor und erkläre, warum sie verworfen oder nicht berücksichtigt wurden.

		## Neue und geänderte Konfigurationswerte
		- Neue Werte
		- Geänderte Werte
		- Beispielkonfigurationen

		## Schulungsmaßnahmen
		Beschreibe, wie du planst, das Team und die Nutzer über die Änderungen zu informieren und zu schulen.

		## Legal und Privacy
		Beschreibe die Auswirkungen auf rechtliche und Datenschutzaspekte.

		## Risiken
		Beschreibe mögliche Risiken und wie sie minimiert werden können.

		## Offene Fragen
		Diskutiere Aspekte, die noch geklärt werden müssen und bei denen Feedback erforderlich ist.

		## Nicht betroffene Funktionalität
		Identifiziere Bereiche, die durch diesen RFC nicht beeinflusst werden.

		## Zukünftiger Anwendungsbereich
		Betrachte zukünftige Erweiterungen oder Verbesserungen, die auf diesem Vorschlag aufbauen könnten.

		## Patches und Tests
		- Patch-Verfügbarkeit
		- Testpläne

		## Implementierung
		Nachdem das Projekt implementiert wurde, sollte dieser Abschnitt Folgendes enthalten:
		1. Die Version(en), in die das Feature eingefügt wurde.
		2. Einen Link zu den entsprechenden Git-Commits.
		3. Einen Link zum Handbuch-Eintrag für das Feature.
		4. Einen Link zum Abschnitt mit den Sprachspezifikationen (falls vorhanden).

		## Referenzen
		Verweise auf relevante externe Diskussionen, Dokumente oder andere RFCs.

		## Abgelehnte Features
		Erläutere, welche Features vorgeschlagen, aber nicht angenommen wurden, und warum.

.gitlab/issue_templates/thoughts-and-ideas.md

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		# Gedanken und Ideen

		Beschreibe Deine Gedanken und Ideen, die Du mit anderen teilen möchtest. Dieses Template ist für
		allgemeine Diskussionen und Brainstorming gedacht. Wenn Du eine spezifische Änderung oder ein neues
		Feature vorschlagen möchtest, verwende bitte das [RFC-Template](./rfc.md).

documentation/licenses/filippo.io/edwards25519/LICENSE

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		Copyright (c) 2009 The Go Authors. All rights reserved.

		Redistribution and use in source and binary forms, with or without
		modification, are permitted provided that the following conditions are
		met:

		* Redistributions of source code must retain the above copyright
		notice, this list of conditions and the following disclaimer.
		* Redistributions in binary form must reproduce the above
		copyright notice, this list of conditions and the following disclaimer
		in the documentation and/or other materials provided with the
		distribution.
		* Neither the name of Google Inc. nor the names of its
		contributors may be used to endorse or promote products derived from
		this software without specific prior written permission.

		THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
		"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
		LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
		A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
		OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
		SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
		LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
		DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
		THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
		(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
		OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

documentation/licenses/github.com/fsnotify/fsnotify/LICENSE

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		Copyright © 2012 The Go Authors. All rights reserved.
		Copyright © fsnotify Authors. All rights reserved.

		Redistribution and use in source and binary forms, with or without modification,
		are permitted provided that the following conditions are met:

		* Redistributions of source code must retain the above copyright notice, this
		list of conditions and the following disclaimer.
		* Redistributions in binary form must reproduce the above copyright notice, this
		list of conditions and the following disclaimer in the documentation and/or
		other materials provided with the distribution.
		* Neither the name of Google Inc. nor the names of its contributors may be used
		to endorse or promote products derived from this software without specific
		prior written permission.

		THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
		ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
		WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
		DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
		ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
		(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
		LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
		ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
		(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
		SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

documentation/licenses/github.com/go-sql-driver/mysql/.gitignore

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		.DS_Store
		.DS_Store?
		._*
		.Spotlight-V100
		.Trashes
		Icon?
		ehthumbs.db
		Thumbs.db
		.idea

documentation/licenses/github.com/go-sql-driver/mysql/AUTHORS

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		# This is the official list of Go-MySQL-Driver authors for copyright purposes.

		# If you are submitting a patch, please add your name or the name of the
		# organization which holds the copyright to this list in alphabetical order.

		# Names should be added to this file as
		# Name <email address>
		# The email address is not required for organizations.
		# Please keep the list sorted.


		# Individual Persons

		Aaron Hopkins <go-sql-driver at die.net>
		Achille Roussel <achille.roussel at gmail.com>
		Aidan <aidan.liu at pingcap.com>
		Alex Snast <alexsn at fb.com>
		Alexey Palazhchenko <alexey.palazhchenko at gmail.com>
		Andrew Reid <andrew.reid at tixtrack.com>
		Animesh Ray <mail.rayanimesh at gmail.com>
		Arne Hormann <arnehormann at gmail.com>
		Ariel Mashraki <ariel at mashraki.co.il>
		Asta Xie <xiemengjun at gmail.com>
		Brian Hendriks <brian at dolthub.com>
		Bulat Gaifullin <gaifullinbf at gmail.com>
		Caine Jette <jette at alum.mit.edu>
		Carlos Nieto <jose.carlos at menteslibres.net>
		Chris Kirkland <chriskirkland at github.com>
		Chris Moos <chris at tech9computers.com>
		Craig Wilson <craiggwilson at gmail.com>
		Daemonxiao <735462752 at qq.com>
		Daniel Montoya <dsmontoyam at gmail.com>
		Daniel Nichter <nil at codenode.com>
		Daniël van Eeden <git at myname.nl>
		Dave Protasowski <dprotaso at gmail.com>
		DisposaBoy <disposaboy at dby.me>
		Egor Smolyakov <egorsmkv at gmail.com>
		Erwan Martin <hello at erwan.io>
		Evan Elias <evan at skeema.net>
		Evan Shaw <evan at vendhq.com>
		Frederick Mayle <frederickmayle at gmail.com>
		Gustavo Kristic <gkristic at gmail.com>
		Gusted <postmaster at gusted.xyz>
		Hajime Nakagami <nakagami at gmail.com>
		Hanno Braun <mail at hannobraun.com>
		Henri Yandell <flamefew at gmail.com>
		Hirotaka Yamamoto <ymmt2005 at gmail.com>
		Huyiguang <hyg at webterren.com>
		ICHINOSE Shogo <shogo82148 at gmail.com>
		Ilia Cimpoes <ichimpoesh at gmail.com>
		INADA Naoki <songofacandy at gmail.com>
		Jacek Szwec <szwec.jacek at gmail.com>
		James Harr <james.harr at gmail.com>
		Janek Vedock <janekvedock at comcast.net>
		Jason Ng <oblitorum at gmail.com>
		Jean-Yves Pellé <jy at pelle.link>
		Jeff Hodges <jeff at somethingsimilar.com>
		Jeffrey Charles <jeffreycharles at gmail.com>
		Jennifer Purevsuren <jennifer at dolthub.com>
		Jerome Meyer <jxmeyer at gmail.com>
		Jiajia Zhong <zhong2plus at gmail.com>
		Jian Zhen <zhenjl at gmail.com>
		Joshua Prunier <joshua.prunier at gmail.com>
		Julien Lefevre <julien.lefevr at gmail.com>
		Julien Schmidt <go-sql-driver at julienschmidt.com>
		Justin Li <jli at j-li.net>
		Justin Nuß <nuss.justin at gmail.com>
		Kamil Dziedzic <kamil at klecza.pl>
		Kei Kamikawa <x00.x7f.x86 at gmail.com>
		Kevin Malachowski <kevin at chowski.com>
		Kieron Woodhouse <kieron.woodhouse at infosum.com>
		Lance Tian <lance6716 at gmail.com>
		Lennart Rudolph <lrudolph at hmc.edu>
		Leonardo YongUk Kim <dalinaum at gmail.com>
		Linh Tran Tuan <linhduonggnu at gmail.com>
		Lion Yang <lion at aosc.xyz>
		Luca Looz <luca.looz92 at gmail.com>
		Lucas Liu <extrafliu at gmail.com>
		Lunny Xiao <xiaolunwen at gmail.com>
		Luke Scott <luke at webconnex.com>
		Maciej Zimnoch <maciej.zimnoch at codilime.com>
		Michael Woolnough <michael.woolnough at gmail.com>
		Nathanial Murphy <nathanial.murphy at gmail.com>
		Nicola Peduzzi <thenikso at gmail.com>
		Oliver Bone <owbone at github.com>
		Olivier Mengué <dolmen at cpan.org>
		oscarzhao <oscarzhaosl at gmail.com>
		Paul Bonser <misterpib at gmail.com>
		Paulius Lozys <pauliuslozys at gmail.com>
		Peter Schultz <peter.schultz at classmarkets.com>
		Phil Porada <philporada at gmail.com>
		Rebecca Chin <rchin at pivotal.io>
		Reed Allman <rdallman10 at gmail.com>
		Richard Wilkes <wilkes at me.com>
		Robert Russell <robert at rrbrussell.com>
		Runrioter Wung <runrioter at gmail.com>
		Samantha Frank <hello at entropy.cat>
		Santhosh Kumar Tekuri <santhosh.tekuri at gmail.com>
		Sho Iizuka <sho.i518 at gmail.com>
		Sho Ikeda <suicaicoca at gmail.com>
		Shuode Li <elemount at qq.com>
		Simon J Mudd <sjmudd at pobox.com>
		Soroush Pour <me at soroushjp.com>
		Stan Putrya <root.vagner at gmail.com>
		Stanley Gunawan <gunawan.stanley at gmail.com>
		Steven Hartland <steven.hartland at multiplay.co.uk>
		Tan Jinhua <312841925 at qq.com>
		Tetsuro Aoki <t.aoki1130 at gmail.com>
		Thomas Wodarek <wodarekwebpage at gmail.com>
		Tim Ruffles <timruffles at gmail.com>
		Tom Jenkinson <tom at tjenkinson.me>
		Vladimir Kovpak <cn007b at gmail.com>
		Vladyslav Zhelezniak <zhvladi at gmail.com>
		Xiangyu Hu <xiangyu.hu at outlook.com>
		Xiaobing Jiang <s7v7nislands at gmail.com>
		Xiuming Chen <cc at cxm.cc>
		Xuehong Chan <chanxuehong at gmail.com>
		Zhang Xiang <angwerzx at 126.com>
		Zhenye Xie <xiezhenye at gmail.com>
		Zhixin Wen <john.wenzhixin at gmail.com>
		Ziheng Lyu <zihenglv at gmail.com>

		# Organizations

		Barracuda Networks, Inc.
		Counting Ltd.
		DigitalOcean Inc.
		Dolthub Inc.
		dyves labs AG
		Facebook Inc.
		GitHub Inc.
		Google Inc.
		InfoSum Ltd.
		Keybase Inc.
		Microsoft Corp.
		Multiplay Ltd.
		Percona LLC
		PingCAP Inc.
		Pivotal Inc.
		Shattered Silicon Ltd.
		Stripe Inc.
		Zendesk Inc.

documentation/licenses/github.com/go-sql-driver/mysql/CHANGELOG.md

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		## Version 1.8.1 (2024-03-26)

		Bugfixes:

		- fix race condition when context is canceled in [#1562](https://github.com/go-sql-driver/mysql/pull/1562) and [#1570](https://github.com/go-sql-driver/mysql/pull/1570)

		## Version 1.8.0 (2024-03-09)

		Major Changes:

		- Use `SET NAMES charset COLLATE collation`. by @methane in [#1437](https://github.com/go-sql-driver/mysql/pull/1437)
		- Older go-mysql-driver used `collation_id` in the handshake packet. But it caused collation mismatch in some situation.
		- If you don't specify charset nor collation, go-mysql-driver sends `SET NAMES utf8mb4` for new connection. This uses server's default collation for utf8mb4.
		- If you specify charset, go-mysql-driver sends `SET NAMES <charset>`. This uses the server's default collation for `<charset>`.
		- If you specify collation and/or charset, go-mysql-driver sends `SET NAMES charset COLLATE collation`.
		- PathEscape dbname in DSN. by @methane in [#1432](https://github.com/go-sql-driver/mysql/pull/1432)
		- This is backward incompatible in rare case. Check your DSN.
		- Drop Go 1.13-17 support by @methane in [#1420](https://github.com/go-sql-driver/mysql/pull/1420)
		- Use Go 1.18+
		- Parse numbers on text protocol too by @methane in [#1452](https://github.com/go-sql-driver/mysql/pull/1452)
		- When text protocol is used, go-mysql-driver passed bare `[]byte` to database/sql for avoid unnecessary allocation and conversion.
		- If user specified `*any` to `Scan()`, database/sql passed the `[]byte` into the target variable.
		- This confused users because most user doesn't know when text/binary protocol used.
		- go-mysql-driver 1.8 converts integer/float values into int64/double even in text protocol. This doesn't increase allocation compared to `[]byte` and conversion cost is negatable.
		- New options start using the Functional Option Pattern to avoid increasing technical debt in the Config object. Future version may introduce Functional Option for existing options, but not for now.
		- Make TimeTruncate functional option by @methane in [1552](https://github.com/go-sql-driver/mysql/pull/1552)
		- Add BeforeConnect callback to configuration object by @ItalyPaleAle in [#1469](https://github.com/go-sql-driver/mysql/pull/1469)


		Other changes:

		- Adding DeregisterDialContext to prevent memory leaks with dialers we don't need anymore by @jypelle in https://github.com/go-sql-driver/mysql/pull/1422
		- Make logger configurable per connection by @frozenbonito in https://github.com/go-sql-driver/mysql/pull/1408
		- Fix ColumnType.DatabaseTypeName for mediumint unsigned by @evanelias in https://github.com/go-sql-driver/mysql/pull/1428
		- Add connection attributes by @Daemonxiao in https://github.com/go-sql-driver/mysql/pull/1389
		- Stop `ColumnTypeScanType()` from returning `sql.RawBytes` by @methane in https://github.com/go-sql-driver/mysql/pull/1424
		- Exec() now provides access to status of multiple statements. by @mherr-google in https://github.com/go-sql-driver/mysql/pull/1309
		- Allow to change (or disable) the default driver name for registration by @dolmen in https://github.com/go-sql-driver/mysql/pull/1499
		- Add default connection attribute '_server_host' by @oblitorum in https://github.com/go-sql-driver/mysql/pull/1506
		- QueryUnescape DSN ConnectionAttribute value by @zhangyangyu in https://github.com/go-sql-driver/mysql/pull/1470
		- Add client_ed25519 authentication by @Gusted in https://github.com/go-sql-driver/mysql/pull/1518

		## Version 1.7.1 (2023-04-25)

		Changes:

		- bump actions/checkout@v3 and actions/setup-go@v3 (#1375)
		- Add go1.20 and mariadb10.11 to the testing matrix (#1403)
		- Increase default maxAllowedPacket size. (#1411)

		Bugfixes:

		- Use SET syntax as specified in the MySQL documentation (#1402)


		## Version 1.7 (2022-11-29)

		Changes:

		- Drop support of Go 1.12 (#1211)
		- Refactoring `(*textRows).readRow` in a more clear way (#1230)
		- util: Reduce boundary check in escape functions. (#1316)
		- enhancement for mysqlConn handleAuthResult (#1250)

		New Features:

		- support Is comparison on MySQLError (#1210)
		- return unsigned in database type name when necessary (#1238)
		- Add API to express like a --ssl-mode=PREFERRED MySQL client (#1370)
		- Add SQLState to MySQLError (#1321)

		Bugfixes:

		- Fix parsing 0 year. (#1257)


		## Version 1.6 (2021-04-01)

		Changes:

		- Migrate the CI service from travis-ci to GitHub Actions (#1176, #1183, #1190)
		- `NullTime` is deprecated (#960, #1144)
		- Reduce allocations when building SET command (#1111)
		- Performance improvement for time formatting (#1118)
		- Performance improvement for time parsing (#1098, #1113)

		New Features:

		- Implement `driver.Validator` interface (#1106, #1174)
		- Support returning `uint64` from `Valuer` in `ConvertValue` (#1143)
		- Add `json.RawMessage` for converter and prepared statement (#1059)
		- Interpolate `json.RawMessage` as `string` (#1058)
		- Implements `CheckNamedValue` (#1090)

		Bugfixes:

		- Stop rounding times (#1121, #1172)
		- Put zero filler into the SSL handshake packet (#1066)
		- Fix checking cancelled connections back into the connection pool (#1095)
		- Fix remove last 0 byte for mysql_old_password when password is empty (#1133)


		## Version 1.5 (2020-01-07)

		Changes:

		- Dropped support Go 1.9 and lower (#823, #829, #886, #1016, #1017)
		- Improve buffer handling (#890)
		- Document potentially insecure TLS configs (#901)
		- Use a double-buffering scheme to prevent data races (#943)
		- Pass uint64 values without converting them to string (#838, #955)
		- Update collations and make utf8mb4 default (#877, #1054)
		- Make NullTime compatible with sql.NullTime in Go 1.13+ (#995)
		- Removed CloudSQL support (#993, #1007)
		- Add Go Module support (#1003)

		New Features:

		- Implement support of optional TLS (#900)
		- Check connection liveness (#934, #964, #997, #1048, #1051, #1052)
		- Implement Connector Interface (#941, #958, #1020, #1035)

		Bugfixes:

		- Mark connections as bad on error during ping (#875)
		- Mark connections as bad on error during dial (#867)
		- Fix connection leak caused by rapid context cancellation (#1024)
		- Mark connections as bad on error during Conn.Prepare (#1030)


		## Version 1.4.1 (2018-11-14)

		Bugfixes:

		- Fix TIME format for binary columns (#818)
		- Fix handling of empty auth plugin names (#835)
		- Fix caching_sha2_password with empty password (#826)
		- Fix canceled context broke mysqlConn (#862)
		- Fix OldAuthSwitchRequest support (#870)
		- Fix Auth Response packet for cleartext password (#887)

		## Version 1.4 (2018-06-03)

		Changes:

		- Documentation fixes (#530, #535, #567)
		- Refactoring (#575, #579, #580, #581, #603, #615, #704)
		- Cache column names (#444)
		- Sort the DSN parameters in DSNs generated from a config (#637)
		- Allow native password authentication by default (#644)
		- Use the default port if it is missing in the DSN (#668)
		- Removed the `strict` mode (#676)
		- Do not query `max_allowed_packet` by default (#680)
		- Dropped support Go 1.6 and lower (#696)
		- Updated `ConvertValue()` to match the database/sql/driver implementation (#760)
		- Document the usage of `0000-00-00T00:00:00` as the time.Time zero value (#783)
		- Improved the compatibility of the authentication system (#807)

		New Features:

		- Multi-Results support (#537)
		- `rejectReadOnly` DSN option (#604)
		- `context.Context` support (#608, #612, #627, #761)
		- Transaction isolation level support (#619, #744)
		- Read-Only transactions support (#618, #634)
		- `NewConfig` function which initializes a config with default values (#679)
		- Implemented the `ColumnType` interfaces (#667, #724)
		- Support for custom string types in `ConvertValue` (#623)
		- Implemented `NamedValueChecker`, improving support for uint64 with high bit set (#690, #709, #710)
		- `caching_sha2_password` authentication plugin support (#794, #800, #801, #802)
		- Implemented `driver.SessionResetter` (#779)
		- `sha256_password` authentication plugin support (#808)

		Bugfixes:

		- Use the DSN hostname as TLS default ServerName if `tls=true` (#564, #718)
		- Fixed LOAD LOCAL DATA INFILE for empty files (#590)
		- Removed columns definition cache since it sometimes cached invalid data (#592)
		- Don't mutate registered TLS configs (#600)
		- Make RegisterTLSConfig concurrency-safe (#613)
		- Handle missing auth data in the handshake packet correctly (#646)
		- Do not retry queries when data was written to avoid data corruption (#302, #736)
		- Cache the connection pointer for error handling before invalidating it (#678)
		- Fixed imports for appengine/cloudsql (#700)
		- Fix sending STMT_LONG_DATA for 0 byte data (#734)
		- Set correct capacity for []bytes read from length-encoded strings (#766)
		- Make RegisterDial concurrency-safe (#773)


		## Version 1.3 (2016-12-01)

		Changes:

		- Go 1.1 is no longer supported
		- Use decimals fields in MySQL to format time types (#249)
		- Buffer optimizations (#269)
		- TLS ServerName defaults to the host (#283)
		- Refactoring (#400, #410, #437)
		- Adjusted documentation for second generation CloudSQL (#485)
		- Documented DSN system var quoting rules (#502)
		- Made statement.Close() calls idempotent to avoid errors in Go 1.6+ (#512)

		New Features:

		- Enable microsecond resolution on TIME, DATETIME and TIMESTAMP (#249)
		- Support for returning table alias on Columns() (#289, #359, #382)
		- Placeholder interpolation, can be activated with the DSN parameter `interpolateParams=true` (#309, #318, #490)
		- Support for uint64 parameters with high bit set (#332, #345)
		- Cleartext authentication plugin support (#327)
		- Exported ParseDSN function and the Config struct (#403, #419, #429)
		- Read / Write timeouts (#401)
		- Support for JSON field type (#414)
		- Support for multi-statements and multi-results (#411, #431)
		- DSN parameter to set the driver-side max_allowed_packet value manually (#489)
		- Native password authentication plugin support (#494, #524)

		Bugfixes:

		- Fixed handling of queries without columns and rows (#255)
		- Fixed a panic when SetKeepAlive() failed (#298)
		- Handle ERR packets while reading rows (#321)
		- Fixed reading NULL length-encoded integers in MySQL 5.6+ (#349)
		- Fixed absolute paths support in LOAD LOCAL DATA INFILE (#356)
		- Actually zero out bytes in handshake response (#378)
		- Fixed race condition in registering LOAD DATA INFILE handler (#383)
		- Fixed tests with MySQL 5.7.9+ (#380)
		- QueryUnescape TLS config names (#397)
		- Fixed "broken pipe" error by writing to closed socket (#390)
		- Fixed LOAD LOCAL DATA INFILE buffering (#424)
		- Fixed parsing of floats into float64 when placeholders are used (#434)
		- Fixed DSN tests with Go 1.7+ (#459)
		- Handle ERR packets while waiting for EOF (#473)
		- Invalidate connection on error while discarding additional results (#513)
		- Allow terminating packets of length 0 (#516)


		## Version 1.2 (2014-06-03)

		Changes:

		- We switched back to a "rolling release". `go get` installs the current master branch again
		- Version v1 of the driver will not be maintained anymore. Go 1.0 is no longer supported by this driver
		- Exported errors to allow easy checking from application code
		- Enabled TCP Keepalives on TCP connections
		- Optimized INFILE handling (better buffer size calculation, lazy init, ...)
		- The DSN parser also checks for a missing separating slash
		- Faster binary date / datetime to string formatting
		- Also exported the MySQLWarning type
		- mysqlConn.Close returns the first error encountered instead of ignoring all errors
		- writePacket() automatically writes the packet size to the header
		- readPacket() uses an iterative approach instead of the recursive approach to merge split packets

		New Features:

		- `RegisterDial` allows the usage of a custom dial function to establish the network connection
		- Setting the connection collation is possible with the `collation` DSN parameter. This parameter should be preferred over the `charset` parameter
		- Logging of critical errors is configurable with `SetLogger`
		- Google CloudSQL support

		Bugfixes:

		- Allow more than 32 parameters in prepared statements
		- Various old_password fixes
		- Fixed TestConcurrent test to pass Go's race detection
		- Fixed appendLengthEncodedInteger for large numbers
		- Renamed readLengthEnodedString to readLengthEncodedString and skipLengthEnodedString to skipLengthEncodedString (fixed typo)


		## Version 1.1 (2013-11-02)

		Changes:

		- Go-MySQL-Driver now requires Go 1.1
		- Connections now use the collation `utf8_general_ci` by default. Adding `&charset=UTF8` to the DSN should not be necessary anymore
		- Made closing rows and connections error tolerant. This allows for example deferring rows.Close() without checking for errors
		- `[]byte(nil)` is now treated as a NULL value. Before, it was treated like an empty string / `[]byte("")`
		- DSN parameter values must now be url.QueryEscape'ed. This allows text values to contain special characters, such as '&'.
		- Use the IO buffer also for writing. This results in zero allocations (by the driver) for most queries
		- Optimized the buffer for reading
		- stmt.Query now caches column metadata
		- New Logo
		- Changed the copyright header to include all contributors
		- Improved the LOAD INFILE documentation
		- The driver struct is now exported to make the driver directly accessible
		- Refactored the driver tests
		- Added more benchmarks and moved all to a separate file
		- Other small refactoring

		New Features:

		- Added old_passwords support: Required in some cases, but must be enabled by adding `allowOldPasswords=true` to the DSN since it is insecure
		- Added a `clientFoundRows` parameter: Return the number of matching rows instead of the number of rows changed on UPDATEs
		- Added TLS/SSL support: Use a TLS/SSL encrypted connection to the server. Custom TLS configs can be registered and used

		Bugfixes:

		- Fixed MySQL 4.1 support: MySQL 4.1 sends packets with lengths which differ from the specification
		- Convert to DB timezone when inserting `time.Time`
		- Split packets (more than 16MB) are now merged correctly
		- Fixed false positive `io.EOF` errors when the data was fully read
		- Avoid panics on reuse of closed connections
		- Fixed empty string producing false nil values
		- Fixed sign byte for positive TIME fields


		## Version 1.0 (2013-05-14)

		Initial Release

documentation/licenses/github.com/go-sql-driver/mysql/LICENSE

0 → 100644

+373 −0

Original line number	Diff line number	Diff line
		Mozilla Public License Version 2.0
		==================================

		1. Definitions
		--------------

		1.1. "Contributor"
		means each individual or legal entity that creates, contributes to
		the creation of, or owns Covered Software.

		1.2. "Contributor Version"
		means the combination of the Contributions of others (if any) used
		by a Contributor and that particular Contributor's Contribution.

		1.3. "Contribution"
		means Covered Software of a particular Contributor.

		1.4. "Covered Software"
		means Source Code Form to which the initial Contributor has attached
		the notice in Exhibit A, the Executable Form of such Source Code
		Form, and Modifications of such Source Code Form, in each case
		including portions thereof.

		1.5. "Incompatible With Secondary Licenses"
		means

		(a) that the initial Contributor has attached the notice described
		in Exhibit B to the Covered Software; or

		(b) that the Covered Software was made available under the terms of
		version 1.1 or earlier of the License, but not also under the
		terms of a Secondary License.

		1.6. "Executable Form"
		means any form of the work other than Source Code Form.

		1.7. "Larger Work"
		means a work that combines Covered Software with other material, in
		a separate file or files, that is not Covered Software.

		1.8. "License"
		means this document.

		1.9. "Licensable"
		means having the right to grant, to the maximum extent possible,
		whether at the time of the initial grant or subsequently, any and
		all of the rights conveyed by this License.

		1.10. "Modifications"
		means any of the following:

		(a) any file in Source Code Form that results from an addition to,
		deletion from, or modification of the contents of Covered
		Software; or

		(b) any new file in Source Code Form that contains any Covered
		Software.

		1.11. "Patent Claims" of a Contributor
		means any patent claim(s), including without limitation, method,
		process, and apparatus claims, in any patent Licensable by such
		Contributor that would be infringed, but for the grant of the
		License, by the making, using, selling, offering for sale, having
		made, import, or transfer of either its Contributions or its
		Contributor Version.

		1.12. "Secondary License"
		means either the GNU General Public License, Version 2.0, the GNU
		Lesser General Public License, Version 2.1, the GNU Affero General
		Public License, Version 3.0, or any later versions of those
		licenses.

		1.13. "Source Code Form"
		means the form of the work preferred for making modifications.

		1.14. "You" (or "Your")
		means an individual or a legal entity exercising rights under this
		License. For legal entities, "You" includes any entity that
		controls, is controlled by, or is under common control with You. For
		purposes of this definition, "control" means (a) the power, direct
		or indirect, to cause the direction or management of such entity,
		whether by contract or otherwise, or (b) ownership of more than
		fifty percent (50%) of the outstanding shares or beneficial
		ownership of such entity.

		2. License Grants and Conditions
		--------------------------------

		2.1. Grants

		Each Contributor hereby grants You a world-wide, royalty-free,
		non-exclusive license:

		(a) under intellectual property rights (other than patent or trademark)
		Licensable by such Contributor to use, reproduce, make available,
		modify, display, perform, distribute, and otherwise exploit its
		Contributions, either on an unmodified basis, with Modifications, or
		as part of a Larger Work; and

		(b) under Patent Claims of such Contributor to make, use, sell, offer
		for sale, have made, import, and otherwise transfer either its
		Contributions or its Contributor Version.

		2.2. Effective Date

		The licenses granted in Section 2.1 with respect to any Contribution
		become effective for each Contribution on the date the Contributor first
		distributes such Contribution.

		2.3. Limitations on Grant Scope

		The licenses granted in this Section 2 are the only rights granted under
		this License. No additional rights or licenses will be implied from the
		distribution or licensing of Covered Software under this License.
		Notwithstanding Section 2.1(b) above, no patent license is granted by a
		Contributor:

		(a) for any code that a Contributor has removed from Covered Software;
		or

		(b) for infringements caused by: (i) Your and any other third party's
		modifications of Covered Software, or (ii) the combination of its
		Contributions with other software (except as part of its Contributor
		Version); or

		(c) under Patent Claims infringed by Covered Software in the absence of
		its Contributions.

		This License does not grant any rights in the trademarks, service marks,
		or logos of any Contributor (except as may be necessary to comply with
		the notice requirements in Section 3.4).

		2.4. Subsequent Licenses

		No Contributor makes additional grants as a result of Your choice to
		distribute the Covered Software under a subsequent version of this
		License (see Section 10.2) or under the terms of a Secondary License (if
		permitted under the terms of Section 3.3).

		2.5. Representation

		Each Contributor represents that the Contributor believes its
		Contributions are its original creation(s) or it has sufficient rights
		to grant the rights to its Contributions conveyed by this License.

		2.6. Fair Use

		This License is not intended to limit any rights You have under
		applicable copyright doctrines of fair use, fair dealing, or other
		equivalents.

		2.7. Conditions

		Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted
		in Section 2.1.

		3. Responsibilities
		-------------------

		3.1. Distribution of Source Form

		All distribution of Covered Software in Source Code Form, including any
		Modifications that You create or to which You contribute, must be under
		the terms of this License. You must inform recipients that the Source
		Code Form of the Covered Software is governed by the terms of this
		License, and how they can obtain a copy of this License. You may not
		attempt to alter or restrict the recipients' rights in the Source Code
		Form.

		3.2. Distribution of Executable Form

		If You distribute Covered Software in Executable Form then:

		(a) such Covered Software must also be made available in Source Code
		Form, as described in Section 3.1, and You must inform recipients of
		the Executable Form how they can obtain a copy of such Source Code
		Form by reasonable means in a timely manner, at a charge no more
		than the cost of distribution to the recipient; and

		(b) You may distribute such Executable Form under the terms of this
		License, or sublicense it under different terms, provided that the
		license for the Executable Form does not attempt to limit or alter
		the recipients' rights in the Source Code Form under this License.

		3.3. Distribution of a Larger Work

		You may create and distribute a Larger Work under terms of Your choice,
		provided that You also comply with the requirements of this License for
		the Covered Software. If the Larger Work is a combination of Covered
		Software with a work governed by one or more Secondary Licenses, and the
		Covered Software is not Incompatible With Secondary Licenses, this
		License permits You to additionally distribute such Covered Software
		under the terms of such Secondary License(s), so that the recipient of
		the Larger Work may, at their option, further distribute the Covered
		Software under the terms of either this License or such Secondary
		License(s).

		3.4. Notices

		You may not remove or alter the substance of any license notices
		(including copyright notices, patent notices, disclaimers of warranty,
		or limitations of liability) contained within the Source Code Form of
		the Covered Software, except that You may alter any license notices to
		the extent required to remedy known factual inaccuracies.

		3.5. Application of Additional Terms

		You may choose to offer, and to charge a fee for, warranty, support,
		indemnity or liability obligations to one or more recipients of Covered
		Software. However, You may do so only on Your own behalf, and not on
		behalf of any Contributor. You must make it absolutely clear that any
		such warranty, support, indemnity, or liability obligation is offered by
		You alone, and You hereby agree to indemnify every Contributor for any
		liability incurred by such Contributor as a result of warranty, support,
		indemnity or liability terms You offer. You may include additional
		disclaimers of warranty and limitations of liability specific to any
		jurisdiction.

		4. Inability to Comply Due to Statute or Regulation
		---------------------------------------------------

		If it is impossible for You to comply with any of the terms of this
		License with respect to some or all of the Covered Software due to
		statute, judicial order, or regulation then You must: (a) comply with
		the terms of this License to the maximum extent possible; and (b)
		describe the limitations and the code they affect. Such description must
		be placed in a text file included with all distributions of the Covered
		Software under this License. Except to the extent prohibited by statute
		or regulation, such description must be sufficiently detailed for a
		recipient of ordinary skill to be able to understand it.

		5. Termination
		--------------

		5.1. The rights granted under this License will terminate automatically
		if You fail to comply with any of its terms. However, if You become
		compliant, then the rights granted under this License from a particular
		Contributor are reinstated (a) provisionally, unless and until such
		Contributor explicitly and finally terminates Your grants, and (b) on an
		ongoing basis, if such Contributor fails to notify You of the
		non-compliance by some reasonable means prior to 60 days after You have
		come back into compliance. Moreover, Your grants from a particular
		Contributor are reinstated on an ongoing basis if such Contributor
		notifies You of the non-compliance by some reasonable means, this is the
		first time You have received notice of non-compliance with this License
		from such Contributor, and You become compliant prior to 30 days after
		Your receipt of the notice.

		5.2. If You initiate litigation against any entity by asserting a patent
		infringement claim (excluding declaratory judgment actions,
		counter-claims, and cross-claims) alleging that a Contributor Version
		directly or indirectly infringes any patent, then the rights granted to
		You by any and all Contributors for the Covered Software under Section
		2.1 of this License shall terminate.

		5.3. In the event of termination under Sections 5.1 or 5.2 above, all
		end user license agreements (excluding distributors and resellers) which
		have been validly granted by You or Your distributors under this License
		prior to termination shall survive termination.

		************************************************************************
		* *
		* 6. Disclaimer of Warranty *
		* ------------------------- *
		* *
		* Covered Software is provided under this License on an "as is" *
		* basis, without warranty of any kind, either expressed, implied, or *
		* statutory, including, without limitation, warranties that the *
		* Covered Software is free of defects, merchantable, fit for a *
		* particular purpose or non-infringing. The entire risk as to the *
		* quality and performance of the Covered Software is with You. *
		* Should any Covered Software prove defective in any respect, You *
		* (not any Contributor) assume the cost of any necessary servicing, *
		* repair, or correction. This disclaimer of warranty constitutes an *
		* essential part of this License. No use of any Covered Software is *
		* authorized under this License except under this disclaimer. *
		* *
		************************************************************************

		************************************************************************
		* *
		* 7. Limitation of Liability *
		* -------------------------- *
		* *
		* Under no circumstances and under no legal theory, whether tort *
		* (including negligence), contract, or otherwise, shall any *
		* Contributor, or anyone who distributes Covered Software as *
		* permitted above, be liable to You for any direct, indirect, *
		* special, incidental, or consequential damages of any character *
		* including, without limitation, damages for lost profits, loss of *
		* goodwill, work stoppage, computer failure or malfunction, or any *
		* and all other commercial damages or losses, even if such party *
		* shall have been informed of the possibility of such damages. This *
		* limitation of liability shall not apply to liability for death or *
		* personal injury resulting from such party's negligence to the *
		* extent applicable law prohibits such limitation. Some *
		* jurisdictions do not allow the exclusion or limitation of *
		* incidental or consequential damages, so this exclusion and *
		* limitation may not apply to You. *
		* *
		************************************************************************

		8. Litigation
		-------------

		Any litigation relating to this License may be brought only in the
		courts of a jurisdiction where the defendant maintains its principal
		place of business and such litigation shall be governed by laws of that
		jurisdiction, without reference to its conflict-of-law provisions.
		Nothing in this Section shall prevent a party's ability to bring
		cross-claims or counter-claims.

		9. Miscellaneous
		----------------

		This License represents the complete agreement concerning the subject
		matter hereof. If any provision of this License is held to be
		unenforceable, such provision shall be reformed only to the extent
		necessary to make it enforceable. Any law or regulation which provides
		that the language of a contract shall be construed against the drafter
		shall not be used to construe this License against a Contributor.

		10. Versions of the License
		---------------------------

		10.1. New Versions

		Mozilla Foundation is the license steward. Except as provided in Section
		10.3, no one other than the license steward has the right to modify or
		publish new versions of this License. Each version will be given a
		distinguishing version number.

		10.2. Effect of New Versions

		You may distribute the Covered Software under the terms of the version
		of the License under which You originally received the Covered Software,
		or under the terms of any subsequent version published by the license
		steward.

		10.3. Modified Versions

		If you create software not governed by this License, and you want to
		create a new license for such software, you may create and use a
		modified version of this License if you rename the license and remove
		any references to the name of the license steward (except to note that
		such modified license differs from this License).

		10.4. Distributing Source Code Form that is Incompatible With Secondary
		Licenses

		If You choose to distribute Source Code Form that is Incompatible With
		Secondary Licenses under the terms of this version of the License, the
		notice described in Exhibit B of this License must be attached.

		Exhibit A - Source Code Form License Notice
		-------------------------------------------

		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/.

		If it is not possible or desirable to put the notice in a particular
		file, then You may include the notice in a location (such as a LICENSE
		file in a relevant directory) where a recipient would be likely to look
		for such a notice.

		You may add additional accurate notices of copyright ownership.

		Exhibit B - "Incompatible With Secondary Licenses" Notice
		---------------------------------------------------------

		This Source Code Form is "Incompatible With Secondary Licenses", as
		defined by the Mozilla Public License, v. 2.0.

documentation/licenses/github.com/go-sql-driver/mysql/README.md

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documentation/licenses/github.com/go-sql-driver/mysql/atomic_bool.go

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Original line number	Diff line number	Diff line
		// Go MySQL Driver - A MySQL-Driver for Go's database/sql package.
		//
		// Copyright 2022 The Go-MySQL-Driver Authors. All rights reserved.
		//
		// 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/.
		//go:build go1.19
		// +build go1.19

		package mysql

		import "sync/atomic"

		/******************************************************************************
		* Sync utils *
		******************************************************************************/

		type atomicBool = atomic.Bool

documentation/licenses/github.com/go-sql-driver/mysql/atomic_bool_go118.go

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Original line number	Diff line number	Diff line
		// Go MySQL Driver - A MySQL-Driver for Go's database/sql package.
		//
		// Copyright 2022 The Go-MySQL-Driver Authors. All rights reserved.
		//
		// 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/.
		//go:build !go1.19
		// +build !go1.19

		package mysql

		import "sync/atomic"

		/******************************************************************************
		* Sync utils *
		******************************************************************************/

		// atomicBool is an implementation of atomic.Bool for older version of Go.
		// it is a wrapper around uint32 for usage as a boolean value with
		// atomic access.
		type atomicBool struct {
		_ noCopy
		value uint32
		}

		// Load returns whether the current boolean value is true
		func (ab *atomicBool) Load() bool {
		return atomic.LoadUint32(&ab.value) > 0
		}

		// Store sets the value of the bool regardless of the previous value
		func (ab *atomicBool) Store(value bool) {
		if value {
		atomic.StoreUint32(&ab.value, 1)
		} else {
		atomic.StoreUint32(&ab.value, 0)
		}
		}

		// Swap sets the value of the bool and returns the old value.
		func (ab *atomicBool) Swap(value bool) bool {
		if value {
		return atomic.SwapUint32(&ab.value, 1) > 0
		}
		return atomic.SwapUint32(&ab.value, 0) > 0
		}

documentation/licenses/github.com/go-sql-driver/mysql/auth.go

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Original line number	Diff line number	Diff line
		// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
		//
		// Copyright 2018 The Go-MySQL-Driver Authors. All rights reserved.
		//
		// 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/.

		package mysql

		import (
		"crypto/rand"
		"crypto/rsa"
		"crypto/sha1"
		"crypto/sha256"
		"crypto/sha512"
		"crypto/x509"
		"encoding/pem"
		"fmt"
		"sync"

		"filippo.io/edwards25519"
		)

		// server pub keys registry
		var (
		serverPubKeyLock sync.RWMutex
		serverPubKeyRegistry map[string]*rsa.PublicKey
		)

		// RegisterServerPubKey registers a server RSA public key which can be used to
		// send data in a secure manner to the server without receiving the public key
		// in a potentially insecure way from the server first.
		// Registered keys can afterwards be used adding serverPubKey=<name> to the DSN.
		//
		// Note: The provided rsa.PublicKey instance is exclusively owned by the driver
		// after registering it and may not be modified.
		//
		// data, err := os.ReadFile("mykey.pem")
		// if err != nil {
		// log.Fatal(err)
		// }
		//
		// block, _ := pem.Decode(data)
		// if block == nil \|\| block.Type != "PUBLIC KEY" {
		// log.Fatal("failed to decode PEM block containing public key")
		// }
		//
		// pub, err := x509.ParsePKIXPublicKey(block.Bytes)
		// if err != nil {
		// log.Fatal(err)
		// }
		//
		// if rsaPubKey, ok := pub.(*rsa.PublicKey); ok {
		// mysql.RegisterServerPubKey("mykey", rsaPubKey)
		// } else {
		// log.Fatal("not a RSA public key")
		// }
		func RegisterServerPubKey(name string, pubKey *rsa.PublicKey) {
		serverPubKeyLock.Lock()
		if serverPubKeyRegistry == nil {
		serverPubKeyRegistry = make(map[string]*rsa.PublicKey)
		}

		serverPubKeyRegistry[name] = pubKey
		serverPubKeyLock.Unlock()
		}

		// DeregisterServerPubKey removes the public key registered with the given name.
		func DeregisterServerPubKey(name string) {
		serverPubKeyLock.Lock()
		if serverPubKeyRegistry != nil {
		delete(serverPubKeyRegistry, name)
		}
		serverPubKeyLock.Unlock()
		}

		func getServerPubKey(name string) (pubKey *rsa.PublicKey) {
		serverPubKeyLock.RLock()
		if v, ok := serverPubKeyRegistry[name]; ok {
		pubKey = v
		}
		serverPubKeyLock.RUnlock()
		return
		}

		// Hash password using pre 4.1 (old password) method
		// https://github.com/atcurtis/mariadb/blob/master/mysys/my_rnd.c
		type myRnd struct {
		seed1, seed2 uint32
		}

		const myRndMaxVal = 0x3FFFFFFF

		// Pseudo random number generator
		func newMyRnd(seed1, seed2 uint32) *myRnd {
		return &myRnd{
		seed1: seed1 % myRndMaxVal,
		seed2: seed2 % myRndMaxVal,
		}
		}

		// Tested to be equivalent to MariaDB's floating point variant
		// http://play.golang.org/p/QHvhd4qved
		// http://play.golang.org/p/RG0q4ElWDx
		func (r *myRnd) NextByte() byte {
		r.seed1 = (r.seed1*3 + r.seed2) % myRndMaxVal
		r.seed2 = (r.seed1 + r.seed2 + 33) % myRndMaxVal

		return byte(uint64(r.seed1) * 31 / myRndMaxVal)
		}

		// Generate binary hash from byte string using insecure pre 4.1 method
		func pwHash(password []byte) (result [2]uint32) {
		var add uint32 = 7
		var tmp uint32

		result[0] = 1345345333
		result[1] = 0x12345671

		for _, c := range password {
		// skip spaces and tabs in password
		if c == ' ' \|\| c == '\t' {
		continue
		}

		tmp = uint32(c)
		result[0] ^= (((result[0] & 63) + add) * tmp) + (result[0] << 8)
		result[1] += (result[1] << 8) ^ result[0]
		add += tmp
		}

		// Remove sign bit (1<<31)-1)
		result[0] &= 0x7FFFFFFF
		result[1] &= 0x7FFFFFFF

		return
		}

		// Hash password using insecure pre 4.1 method
		func scrambleOldPassword(scramble []byte, password string) []byte {
		scramble = scramble[:8]

		hashPw := pwHash([]byte(password))
		hashSc := pwHash(scramble)

		r := newMyRnd(hashPw[0]^hashSc[0], hashPw[1]^hashSc[1])

		var out [8]byte
		for i := range out {
		out[i] = r.NextByte() + 64
		}

		mask := r.NextByte()
		for i := range out {
		out[i] ^= mask
		}

		return out[:]
		}

		// Hash password using 4.1+ method (SHA1)
		func scramblePassword(scramble []byte, password string) []byte {
		if len(password) == 0 {
		return nil
		}

		// stage1Hash = SHA1(password)
		crypt := sha1.New()
		crypt.Write([]byte(password))
		stage1 := crypt.Sum(nil)

		// scrambleHash = SHA1(scramble + SHA1(stage1Hash))
		// inner Hash
		crypt.Reset()
		crypt.Write(stage1)
		hash := crypt.Sum(nil)

		// outer Hash
		crypt.Reset()
		crypt.Write(scramble)
		crypt.Write(hash)
		scramble = crypt.Sum(nil)

		// token = scrambleHash XOR stage1Hash
		for i := range scramble {
		scramble[i] ^= stage1[i]
		}
		return scramble
		}

		// Hash password using MySQL 8+ method (SHA256)
		func scrambleSHA256Password(scramble []byte, password string) []byte {
		if len(password) == 0 {
		return nil
		}

		// XOR(SHA256(password), SHA256(SHA256(SHA256(password)), scramble))

		crypt := sha256.New()
		crypt.Write([]byte(password))
		message1 := crypt.Sum(nil)

		crypt.Reset()
		crypt.Write(message1)
		message1Hash := crypt.Sum(nil)

		crypt.Reset()
		crypt.Write(message1Hash)
		crypt.Write(scramble)
		message2 := crypt.Sum(nil)

		for i := range message1 {
		message1[i] ^= message2[i]
		}

		return message1
		}

		func encryptPassword(password string, seed []byte, pub *rsa.PublicKey) ([]byte, error) {
		plain := make([]byte, len(password)+1)
		copy(plain, password)
		for i := range plain {
		j := i % len(seed)
		plain[i] ^= seed[j]
		}
		sha1 := sha1.New()
		return rsa.EncryptOAEP(sha1, rand.Reader, pub, plain, nil)
		}

		// authEd25519 does ed25519 authentication used by MariaDB.
		func authEd25519(scramble []byte, password string) ([]byte, error) {
		// Derived from https://github.com/MariaDB/server/blob/d8e6bb00888b1f82c031938f4c8ac5d97f6874c3/plugin/auth_ed25519/ref10/sign.c
		// Code style is from https://cs.opensource.google/go/go/+/refs/tags/go1.21.5:src/crypto/ed25519/ed25519.go;l=207
		h := sha512.Sum512([]byte(password))

		s, err := edwards25519.NewScalar().SetBytesWithClamping(h[:32])
		if err != nil {
		return nil, err
		}
		A := (&edwards25519.Point{}).ScalarBaseMult(s)

		mh := sha512.New()
		mh.Write(h[32:])
		mh.Write(scramble)
		messageDigest := mh.Sum(nil)
		r, err := edwards25519.NewScalar().SetUniformBytes(messageDigest)
		if err != nil {
		return nil, err
		}

		R := (&edwards25519.Point{}).ScalarBaseMult(r)

		kh := sha512.New()
		kh.Write(R.Bytes())
		kh.Write(A.Bytes())
		kh.Write(scramble)
		hramDigest := kh.Sum(nil)
		k, err := edwards25519.NewScalar().SetUniformBytes(hramDigest)
		if err != nil {
		return nil, err
		}

		S := k.MultiplyAdd(k, s, r)

		return append(R.Bytes(), S.Bytes()...), nil
		}

		func (mc mysqlConn) sendEncryptedPassword(seed []byte, pub rsa.PublicKey) error {
		enc, err := encryptPassword(mc.cfg.Passwd, seed, pub)
		if err != nil {
		return err
		}
		return mc.writeAuthSwitchPacket(enc)
		}

		func (mc *mysqlConn) auth(authData []byte, plugin string) ([]byte, error) {
		switch plugin {
		case "caching_sha2_password":
		authResp := scrambleSHA256Password(authData, mc.cfg.Passwd)
		return authResp, nil

		case "mysql_old_password":
		if !mc.cfg.AllowOldPasswords {
		return nil, ErrOldPassword
		}
		if len(mc.cfg.Passwd) == 0 {
		return nil, nil
		}
		// Note: there are edge cases where this should work but doesn't;
		// this is currently "wontfix":
		// https://github.com/go-sql-driver/mysql/issues/184
		authResp := append(scrambleOldPassword(authData[:8], mc.cfg.Passwd), 0)
		return authResp, nil

		case "mysql_clear_password":
		if !mc.cfg.AllowCleartextPasswords {
		return nil, ErrCleartextPassword
		}
		// http://dev.mysql.com/doc/refman/5.7/en/cleartext-authentication-plugin.html
		// http://dev.mysql.com/doc/refman/5.7/en/pam-authentication-plugin.html
		return append([]byte(mc.cfg.Passwd), 0), nil

		case "mysql_native_password":
		if !mc.cfg.AllowNativePasswords {
		return nil, ErrNativePassword
		}
		// https://dev.mysql.com/doc/internals/en/secure-password-authentication.html
		// Native password authentication only need and will need 20-byte challenge.
		authResp := scramblePassword(authData[:20], mc.cfg.Passwd)
		return authResp, nil

		case "sha256_password":
		if len(mc.cfg.Passwd) == 0 {
		return []byte{0}, nil
		}
		// unlike caching_sha2_password, sha256_password does not accept
		// cleartext password on unix transport.
		if mc.cfg.TLS != nil {
		// write cleartext auth packet
		return append([]byte(mc.cfg.Passwd), 0), nil
		}

		pubKey := mc.cfg.pubKey
		if pubKey == nil {
		// request public key from server
		return []byte{1}, nil
		}

		// encrypted password
		enc, err := encryptPassword(mc.cfg.Passwd, authData, pubKey)
		return enc, err

		case "client_ed25519":
		if len(authData) != 32 {
		return nil, ErrMalformPkt
		}
		return authEd25519(authData, mc.cfg.Passwd)

		default:
		mc.log("unknown auth plugin:", plugin)
		return nil, ErrUnknownPlugin
		}
		}

		func (mc *mysqlConn) handleAuthResult(oldAuthData []byte, plugin string) error {
		// Read Result Packet
		authData, newPlugin, err := mc.readAuthResult()
		if err != nil {
		return err
		}

		// handle auth plugin switch, if requested
		if newPlugin != "" {
		// If CLIENT_PLUGIN_AUTH capability is not supported, no new cipher is
		// sent and we have to keep using the cipher sent in the init packet.
		if authData == nil {
		authData = oldAuthData
		} else {
		// copy data from read buffer to owned slice
		copy(oldAuthData, authData)
		}

		plugin = newPlugin

		authResp, err := mc.auth(authData, plugin)
		if err != nil {
		return err
		}
		if err = mc.writeAuthSwitchPacket(authResp); err != nil {
		return err
		}

		// Read Result Packet
		authData, newPlugin, err = mc.readAuthResult()
		if err != nil {
		return err
		}

		// Do not allow to change the auth plugin more than once
		if newPlugin != "" {
		return ErrMalformPkt
		}
		}

		switch plugin {

		// https://dev.mysql.com/blog-archive/preparing-your-community-connector-for-mysql-8-part-2-sha256/
		case "caching_sha2_password":
		switch len(authData) {
		case 0:
		return nil // auth successful
		case 1:
		switch authData[0] {
		case cachingSha2PasswordFastAuthSuccess:
		if err = mc.resultUnchanged().readResultOK(); err == nil {
		return nil // auth successful
		}

		case cachingSha2PasswordPerformFullAuthentication:
		if mc.cfg.TLS != nil \|\| mc.cfg.Net == "unix" {
		// write cleartext auth packet
		err = mc.writeAuthSwitchPacket(append([]byte(mc.cfg.Passwd), 0))
		if err != nil {
		return err
		}
		} else {
		pubKey := mc.cfg.pubKey
		if pubKey == nil {
		// request public key from server
		data, err := mc.buf.takeSmallBuffer(4 + 1)
		if err != nil {
		return err
		}
		data[4] = cachingSha2PasswordRequestPublicKey
		err = mc.writePacket(data)
		if err != nil {
		return err
		}

		if data, err = mc.readPacket(); err != nil {
		return err
		}

		if data[0] != iAuthMoreData {
		return fmt.Errorf("unexpected resp from server for caching_sha2_password, perform full authentication")
		}

		// parse public key
		block, rest := pem.Decode(data[1:])
		if block == nil {
		return fmt.Errorf("no pem data found, data: %s", rest)
		}
		pkix, err := x509.ParsePKIXPublicKey(block.Bytes)
		if err != nil {
		return err
		}
		pubKey = pkix.(*rsa.PublicKey)
		}

		// send encrypted password
		err = mc.sendEncryptedPassword(oldAuthData, pubKey)
		if err != nil {
		return err
		}
		}
		return mc.resultUnchanged().readResultOK()

		default:
		return ErrMalformPkt
		}
		default:
		return ErrMalformPkt
		}

		case "sha256_password":
		switch len(authData) {
		case 0:
		return nil // auth successful
		default:
		block, _ := pem.Decode(authData)
		if block == nil {
		return fmt.Errorf("no Pem data found, data: %s", authData)
		}

		pub, err := x509.ParsePKIXPublicKey(block.Bytes)
		if err != nil {
		return err
		}

		// send encrypted password
		err = mc.sendEncryptedPassword(oldAuthData, pub.(*rsa.PublicKey))
		if err != nil {
		return err
		}
		return mc.resultUnchanged().readResultOK()
		}

		default:
		return nil // auth successful
		}

		return err
		}

documentation/licenses/github.com/go-sql-driver/mysql/buffer.go

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Original line number	Diff line number	Diff line
		// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
		//
		// Copyright 2013 The Go-MySQL-Driver Authors. All rights reserved.
		//
		// 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/.

		package mysql

		import (
		"io"
		"net"
		"time"
		)

		const defaultBufSize = 4096
		const maxCachedBufSize = 256 * 1024

		// A buffer which is used for both reading and writing.
		// This is possible since communication on each connection is synchronous.
		// In other words, we can't write and read simultaneously on the same connection.
		// The buffer is similar to bufio.Reader / Writer but zero-copy-ish
		// Also highly optimized for this particular use case.
		// This buffer is backed by two byte slices in a double-buffering scheme
		type buffer struct {
		buf []byte // buf is a byte buffer who's length and capacity are equal.
		nc net.Conn
		idx int
		length int
		timeout time.Duration
		dbuf [2][]byte // dbuf is an array with the two byte slices that back this buffer
		flipcnt uint // flipccnt is the current buffer counter for double-buffering
		}

		// newBuffer allocates and returns a new buffer.
		func newBuffer(nc net.Conn) buffer {
		fg := make([]byte, defaultBufSize)
		return buffer{
		buf: fg,
		nc: nc,
		dbuf: [2][]byte{fg, nil},
		}
		}

		// flip replaces the active buffer with the background buffer
		// this is a delayed flip that simply increases the buffer counter;
		// the actual flip will be performed the next time we call `buffer.fill`
		func (b *buffer) flip() {
		b.flipcnt += 1
		}

		// fill reads into the buffer until at least _need_ bytes are in it
		func (b *buffer) fill(need int) error {
		n := b.length
		// fill data into its double-buffering target: if we've called
		// flip on this buffer, we'll be copying to the background buffer,
		// and then filling it with network data; otherwise we'll just move
		// the contents of the current buffer to the front before filling it
		dest := b.dbuf[b.flipcnt&1]

		// grow buffer if necessary to fit the whole packet.
		if need > len(dest) {
		// Round up to the next multiple of the default size
		dest = make([]byte, ((need/defaultBufSize)+1)*defaultBufSize)

		// if the allocated buffer is not too large, move it to backing storage
		// to prevent extra allocations on applications that perform large reads
		if len(dest) <= maxCachedBufSize {
		b.dbuf[b.flipcnt&1] = dest
		}
		}

		// if we're filling the fg buffer, move the existing data to the start of it.
		// if we're filling the bg buffer, copy over the data
		if n > 0 {
		copy(dest[:n], b.buf[b.idx:])
		}

		b.buf = dest
		b.idx = 0

		for {
		if b.timeout > 0 {
		if err := b.nc.SetReadDeadline(time.Now().Add(b.timeout)); err != nil {
		return err
		}
		}

		nn, err := b.nc.Read(b.buf[n:])
		n += nn

		switch err {
		case nil:
		if n < need {
		continue
		}
		b.length = n
		return nil

		case io.EOF:
		if n >= need {
		b.length = n
		return nil
		}
		return io.ErrUnexpectedEOF

		default:
		return err
		}
		}
		}

		// returns next N bytes from buffer.
		// The returned slice is only guaranteed to be valid until the next read
		func (b *buffer) readNext(need int) ([]byte, error) {
		if b.length < need {
		// refill
		if err := b.fill(need); err != nil {
		return nil, err
		}
		}

		offset := b.idx
		b.idx += need
		b.length -= need
		return b.buf[offset:b.idx], nil
		}

		// takeBuffer returns a buffer with the requested size.
		// If possible, a slice from the existing buffer is returned.
		// Otherwise a bigger buffer is made.
		// Only one buffer (total) can be used at a time.
		func (b *buffer) takeBuffer(length int) ([]byte, error) {
		if b.length > 0 {
		return nil, ErrBusyBuffer
		}

		// test (cheap) general case first
		if length <= cap(b.buf) {
		return b.buf[:length], nil
		}

		if length < maxPacketSize {
		b.buf = make([]byte, length)
		return b.buf, nil
		}

		// buffer is larger than we want to store.
		return make([]byte, length), nil
		}

		// takeSmallBuffer is shortcut which can be used if length is
		// known to be smaller than defaultBufSize.
		// Only one buffer (total) can be used at a time.
		func (b *buffer) takeSmallBuffer(length int) ([]byte, error) {
		if b.length > 0 {
		return nil, ErrBusyBuffer
		}
		return b.buf[:length], nil
		}

		// takeCompleteBuffer returns the complete existing buffer.
		// This can be used if the necessary buffer size is unknown.
		// cap and len of the returned buffer will be equal.
		// Only one buffer (total) can be used at a time.
		func (b *buffer) takeCompleteBuffer() ([]byte, error) {
		if b.length > 0 {
		return nil, ErrBusyBuffer
		}
		return b.buf, nil
		}

		// store stores buf, an updated buffer, if its suitable to do so.
		func (b *buffer) store(buf []byte) error {
		if b.length > 0 {
		return ErrBusyBuffer
		} else if cap(buf) <= maxPacketSize && cap(buf) > cap(b.buf) {
		b.buf = buf[:cap(buf)]
		}
		return nil
		}

documentation/licenses/github.com/go-sql-driver/mysql/collations.go

0 → 100644

+266 −0

Original line number	Diff line number	Diff line
		// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
		//
		// Copyright 2014 The Go-MySQL-Driver Authors. All rights reserved.
		//
		// 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/.

		package mysql

		const defaultCollation = "utf8mb4_general_ci"
		const binaryCollationID = 63

		// A list of available collations mapped to the internal ID.
		// To update this map use the following MySQL query:
		//
		// SELECT COLLATION_NAME, ID FROM information_schema.COLLATIONS WHERE ID<256 ORDER BY ID
		//
		// Handshake packet have only 1 byte for collation_id. So we can't use collations with ID > 255.
		//
		// ucs2, utf16, and utf32 can't be used for connection charset.
		// https://dev.mysql.com/doc/refman/5.7/en/charset-connection.html#charset-connection-impermissible-client-charset
		// They are commented out to reduce this map.
		var collations = map[string]byte{
		"big5_chinese_ci": 1,
		"latin2_czech_cs": 2,
		"dec8_swedish_ci": 3,
		"cp850_general_ci": 4,
		"latin1_german1_ci": 5,
		"hp8_english_ci": 6,
		"koi8r_general_ci": 7,
		"latin1_swedish_ci": 8,
		"latin2_general_ci": 9,
		"swe7_swedish_ci": 10,
		"ascii_general_ci": 11,
		"ujis_japanese_ci": 12,
		"sjis_japanese_ci": 13,
		"cp1251_bulgarian_ci": 14,
		"latin1_danish_ci": 15,
		"hebrew_general_ci": 16,
		"tis620_thai_ci": 18,
		"euckr_korean_ci": 19,
		"latin7_estonian_cs": 20,
		"latin2_hungarian_ci": 21,
		"koi8u_general_ci": 22,
		"cp1251_ukrainian_ci": 23,
		"gb2312_chinese_ci": 24,
		"greek_general_ci": 25,
		"cp1250_general_ci": 26,
		"latin2_croatian_ci": 27,
		"gbk_chinese_ci": 28,
		"cp1257_lithuanian_ci": 29,
		"latin5_turkish_ci": 30,
		"latin1_german2_ci": 31,
		"armscii8_general_ci": 32,
		"utf8_general_ci": 33,
		"cp1250_czech_cs": 34,
		//"ucs2_general_ci": 35,
		"cp866_general_ci": 36,
		"keybcs2_general_ci": 37,
		"macce_general_ci": 38,
		"macroman_general_ci": 39,
		"cp852_general_ci": 40,
		"latin7_general_ci": 41,
		"latin7_general_cs": 42,
		"macce_bin": 43,
		"cp1250_croatian_ci": 44,
		"utf8mb4_general_ci": 45,
		"utf8mb4_bin": 46,
		"latin1_bin": 47,
		"latin1_general_ci": 48,
		"latin1_general_cs": 49,
		"cp1251_bin": 50,
		"cp1251_general_ci": 51,
		"cp1251_general_cs": 52,
		"macroman_bin": 53,
		//"utf16_general_ci": 54,
		//"utf16_bin": 55,
		//"utf16le_general_ci": 56,
		"cp1256_general_ci": 57,
		"cp1257_bin": 58,
		"cp1257_general_ci": 59,
		//"utf32_general_ci": 60,
		//"utf32_bin": 61,
		//"utf16le_bin": 62,
		"binary": 63,
		"armscii8_bin": 64,
		"ascii_bin": 65,
		"cp1250_bin": 66,
		"cp1256_bin": 67,
		"cp866_bin": 68,
		"dec8_bin": 69,
		"greek_bin": 70,
		"hebrew_bin": 71,
		"hp8_bin": 72,
		"keybcs2_bin": 73,
		"koi8r_bin": 74,
		"koi8u_bin": 75,
		"utf8_tolower_ci": 76,
		"latin2_bin": 77,
		"latin5_bin": 78,
		"latin7_bin": 79,
		"cp850_bin": 80,
		"cp852_bin": 81,
		"swe7_bin": 82,
		"utf8_bin": 83,
		"big5_bin": 84,
		"euckr_bin": 85,
		"gb2312_bin": 86,
		"gbk_bin": 87,
		"sjis_bin": 88,
		"tis620_bin": 89,
		//"ucs2_bin": 90,
		"ujis_bin": 91,
		"geostd8_general_ci": 92,
		"geostd8_bin": 93,
		"latin1_spanish_ci": 94,
		"cp932_japanese_ci": 95,
		"cp932_bin": 96,
		"eucjpms_japanese_ci": 97,
		"eucjpms_bin": 98,
		"cp1250_polish_ci": 99,
		//"utf16_unicode_ci": 101,
		//"utf16_icelandic_ci": 102,
		//"utf16_latvian_ci": 103,
		//"utf16_romanian_ci": 104,
		//"utf16_slovenian_ci": 105,
		//"utf16_polish_ci": 106,
		//"utf16_estonian_ci": 107,
		//"utf16_spanish_ci": 108,
		//"utf16_swedish_ci": 109,
		//"utf16_turkish_ci": 110,
		//"utf16_czech_ci": 111,
		//"utf16_danish_ci": 112,
		//"utf16_lithuanian_ci": 113,
		//"utf16_slovak_ci": 114,
		//"utf16_spanish2_ci": 115,
		//"utf16_roman_ci": 116,
		//"utf16_persian_ci": 117,
		//"utf16_esperanto_ci": 118,
		//"utf16_hungarian_ci": 119,
		//"utf16_sinhala_ci": 120,
		//"utf16_german2_ci": 121,
		//"utf16_croatian_ci": 122,
		//"utf16_unicode_520_ci": 123,
		//"utf16_vietnamese_ci": 124,
		//"ucs2_unicode_ci": 128,
		//"ucs2_icelandic_ci": 129,
		//"ucs2_latvian_ci": 130,
		//"ucs2_romanian_ci": 131,
		//"ucs2_slovenian_ci": 132,
		//"ucs2_polish_ci": 133,
		//"ucs2_estonian_ci": 134,
		//"ucs2_spanish_ci": 135,
		//"ucs2_swedish_ci": 136,
		//"ucs2_turkish_ci": 137,
		//"ucs2_czech_ci": 138,
		//"ucs2_danish_ci": 139,
		//"ucs2_lithuanian_ci": 140,
		//"ucs2_slovak_ci": 141,
		//"ucs2_spanish2_ci": 142,
		//"ucs2_roman_ci": 143,
		//"ucs2_persian_ci": 144,
		//"ucs2_esperanto_ci": 145,
		//"ucs2_hungarian_ci": 146,
		//"ucs2_sinhala_ci": 147,
		//"ucs2_german2_ci": 148,
		//"ucs2_croatian_ci": 149,
		//"ucs2_unicode_520_ci": 150,
		//"ucs2_vietnamese_ci": 151,
		//"ucs2_general_mysql500_ci": 159,
		//"utf32_unicode_ci": 160,
		//"utf32_icelandic_ci": 161,
		//"utf32_latvian_ci": 162,
		//"utf32_romanian_ci": 163,
		//"utf32_slovenian_ci": 164,
		//"utf32_polish_ci": 165,
		//"utf32_estonian_ci": 166,
		//"utf32_spanish_ci": 167,
		//"utf32_swedish_ci": 168,
		//"utf32_turkish_ci": 169,
		//"utf32_czech_ci": 170,
		//"utf32_danish_ci": 171,
		//"utf32_lithuanian_ci": 172,
		//"utf32_slovak_ci": 173,
		//"utf32_spanish2_ci": 174,
		//"utf32_roman_ci": 175,
		//"utf32_persian_ci": 176,
		//"utf32_esperanto_ci": 177,
		//"utf32_hungarian_ci": 178,
		//"utf32_sinhala_ci": 179,
		//"utf32_german2_ci": 180,
		//"utf32_croatian_ci": 181,
		//"utf32_unicode_520_ci": 182,
		//"utf32_vietnamese_ci": 183,
		"utf8_unicode_ci": 192,
		"utf8_icelandic_ci": 193,
		"utf8_latvian_ci": 194,
		"utf8_romanian_ci": 195,
		"utf8_slovenian_ci": 196,
		"utf8_polish_ci": 197,
		"utf8_estonian_ci": 198,
		"utf8_spanish_ci": 199,
		"utf8_swedish_ci": 200,
		"utf8_turkish_ci": 201,
		"utf8_czech_ci": 202,
		"utf8_danish_ci": 203,
		"utf8_lithuanian_ci": 204,
		"utf8_slovak_ci": 205,
		"utf8_spanish2_ci": 206,
		"utf8_roman_ci": 207,
		"utf8_persian_ci": 208,
		"utf8_esperanto_ci": 209,
		"utf8_hungarian_ci": 210,
		"utf8_sinhala_ci": 211,
		"utf8_german2_ci": 212,
		"utf8_croatian_ci": 213,
		"utf8_unicode_520_ci": 214,
		"utf8_vietnamese_ci": 215,
		"utf8_general_mysql500_ci": 223,
		"utf8mb4_unicode_ci": 224,
		"utf8mb4_icelandic_ci": 225,
		"utf8mb4_latvian_ci": 226,
		"utf8mb4_romanian_ci": 227,
		"utf8mb4_slovenian_ci": 228,
		"utf8mb4_polish_ci": 229,
		"utf8mb4_estonian_ci": 230,
		"utf8mb4_spanish_ci": 231,
		"utf8mb4_swedish_ci": 232,
		"utf8mb4_turkish_ci": 233,
		"utf8mb4_czech_ci": 234,
		"utf8mb4_danish_ci": 235,
		"utf8mb4_lithuanian_ci": 236,
		"utf8mb4_slovak_ci": 237,
		"utf8mb4_spanish2_ci": 238,
		"utf8mb4_roman_ci": 239,
		"utf8mb4_persian_ci": 240,
		"utf8mb4_esperanto_ci": 241,
		"utf8mb4_hungarian_ci": 242,
		"utf8mb4_sinhala_ci": 243,
		"utf8mb4_german2_ci": 244,
		"utf8mb4_croatian_ci": 245,
		"utf8mb4_unicode_520_ci": 246,
		"utf8mb4_vietnamese_ci": 247,
		"gb18030_chinese_ci": 248,
		"gb18030_bin": 249,
		"gb18030_unicode_520_ci": 250,
		"utf8mb4_0900_ai_ci": 255,
		}

		// A denylist of collations which is unsafe to interpolate parameters.
		// These multibyte encodings may contains 0x5c (`\`) in their trailing bytes.
		var unsafeCollations = map[string]bool{
		"big5_chinese_ci": true,
		"sjis_japanese_ci": true,
		"gbk_chinese_ci": true,
		"big5_bin": true,
		"gb2312_bin": true,
		"gbk_bin": true,
		"sjis_bin": true,
		"cp932_japanese_ci": true,
		"cp932_bin": true,
		"gb18030_chinese_ci": true,
		"gb18030_bin": true,
		"gb18030_unicode_520_ci": true,
		}

documentation/licenses/github.com/go-sql-driver/mysql/conncheck.go

0 → 100644

+55 −0

Original line number	Diff line number	Diff line
		// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
		//
		// Copyright 2019 The Go-MySQL-Driver Authors. All rights reserved.
		//
		// 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/.

		//go:build linux \|\| darwin \|\| dragonfly \|\| freebsd \|\| netbsd \|\| openbsd \|\| solaris \|\| illumos
		// +build linux darwin dragonfly freebsd netbsd openbsd solaris illumos

		package mysql

		import (
		"errors"
		"io"
		"net"
		"syscall"
		)

		var errUnexpectedRead = errors.New("unexpected read from socket")

		func connCheck(conn net.Conn) error {
		var sysErr error

		sysConn, ok := conn.(syscall.Conn)
		if !ok {
		return nil
		}
		rawConn, err := sysConn.SyscallConn()
		if err != nil {
		return err
		}

		err = rawConn.Read(func(fd uintptr) bool {
		var buf [1]byte
		n, err := syscall.Read(int(fd), buf[:])
		switch {
		case n == 0 && err == nil:
		sysErr = io.EOF
		case n > 0:
		sysErr = errUnexpectedRead
		case err == syscall.EAGAIN \|\| err == syscall.EWOULDBLOCK:
		sysErr = nil
		default:
		sysErr = err
		}
		return true
		})
		if err != nil {
		return err
		}

		return sysErr
		}

documentation/licenses/github.com/go-sql-driver/mysql/conncheck_dummy.go

0 → 100644

+18 −0

Original line number	Diff line number	Diff line
		// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
		//
		// Copyright 2019 The Go-MySQL-Driver Authors. All rights reserved.
		//
		// 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/.

		//go:build !linux && !darwin && !dragonfly && !freebsd && !netbsd && !openbsd && !solaris && !illumos
		// +build !linux,!darwin,!dragonfly,!freebsd,!netbsd,!openbsd,!solaris,!illumos

		package mysql

		import "net"

		func connCheck(conn net.Conn) error {
		return nil
		}

documentation/licenses/github.com/go-sql-driver/mysql/connection.go

0 → 100644

+688 −0

Original line number	Diff line number	Diff line
		// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
		//
		// Copyright 2012 The Go-MySQL-Driver Authors. All rights reserved.
		//
		// 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/.

		package mysql

		import (
		"context"
		"database/sql"
		"database/sql/driver"
		"encoding/json"
		"io"
		"net"
		"strconv"
		"strings"
		"time"
		)

		type mysqlConn struct {
		buf buffer
		netConn net.Conn
		rawConn net.Conn // underlying connection when netConn is TLS connection.
		result mysqlResult // managed by clearResult() and handleOkPacket().
		cfg *Config
		connector *connector
		maxAllowedPacket int
		maxWriteSize int
		writeTimeout time.Duration
		flags clientFlag
		status statusFlag
		sequence uint8
		parseTime bool

		// for context support (Go 1.8+)
		watching bool
		watcher chan<- context.Context
		closech chan struct{}
		finished chan<- struct{}
		canceled atomicError // set non-nil if conn is canceled
		closed atomicBool // set when conn is closed, before closech is closed
		}

		// Helper function to call per-connection logger.
		func (mc *mysqlConn) log(v ...any) {
		mc.cfg.Logger.Print(v...)
		}

		// Handles parameters set in DSN after the connection is established
		func (mc *mysqlConn) handleParams() (err error) {
		var cmdSet strings.Builder

		for param, val := range mc.cfg.Params {
		switch param {
		// Charset: character_set_connection, character_set_client, character_set_results
		case "charset":
		charsets := strings.Split(val, ",")
		for _, cs := range charsets {
		// ignore errors here - a charset may not exist
		if mc.cfg.Collation != "" {
		err = mc.exec("SET NAMES " + cs + " COLLATE " + mc.cfg.Collation)
		} else {
		err = mc.exec("SET NAMES " + cs)
		}
		if err == nil {
		break
		}
		}
		if err != nil {
		return
		}

		// Other system vars accumulated in a single SET command
		default:
		if cmdSet.Len() == 0 {
		// Heuristic: 29 chars for each other key=value to reduce reallocations
		cmdSet.Grow(4 + len(param) + 3 + len(val) + 30*(len(mc.cfg.Params)-1))
		cmdSet.WriteString("SET ")
		} else {
		cmdSet.WriteString(", ")
		}
		cmdSet.WriteString(param)
		cmdSet.WriteString(" = ")
		cmdSet.WriteString(val)
		}
		}

		if cmdSet.Len() > 0 {
		err = mc.exec(cmdSet.String())
		if err != nil {
		return
		}
		}

		return
		}

		func (mc *mysqlConn) markBadConn(err error) error {
		if mc == nil {
		return err
		}
		if err != errBadConnNoWrite {
		return err
		}
		return driver.ErrBadConn
		}

		func (mc *mysqlConn) Begin() (driver.Tx, error) {
		return mc.begin(false)
		}

		func (mc *mysqlConn) begin(readOnly bool) (driver.Tx, error) {
		if mc.closed.Load() {
		mc.log(ErrInvalidConn)
		return nil, driver.ErrBadConn
		}
		var q string
		if readOnly {
		q = "START TRANSACTION READ ONLY"
		} else {
		q = "START TRANSACTION"
		}
		err := mc.exec(q)
		if err == nil {
		return &mysqlTx{mc}, err
		}
		return nil, mc.markBadConn(err)
		}

		func (mc *mysqlConn) Close() (err error) {
		// Makes Close idempotent
		if !mc.closed.Load() {
		err = mc.writeCommandPacket(comQuit)
		}

		mc.cleanup()
		mc.clearResult()
		return
		}

		// Closes the network connection and unsets internal variables. Do not call this
		// function after successfully authentication, call Close instead. This function
		// is called before auth or on auth failure because MySQL will have already
		// closed the network connection.
		func (mc *mysqlConn) cleanup() {
		if mc.closed.Swap(true) {
		return
		}

		// Makes cleanup idempotent
		close(mc.closech)
		conn := mc.rawConn
		if conn == nil {
		return
		}
		if err := conn.Close(); err != nil {
		mc.log(err)
		}
		// This function can be called from multiple goroutines.
		// So we can not mc.clearResult() here.
		// Caller should do it if they are in safe goroutine.
		}

		func (mc *mysqlConn) error() error {
		if mc.closed.Load() {
		if err := mc.canceled.Value(); err != nil {
		return err
		}
		return ErrInvalidConn
		}
		return nil
		}

		func (mc *mysqlConn) Prepare(query string) (driver.Stmt, error) {
		if mc.closed.Load() {
		mc.log(ErrInvalidConn)
		return nil, driver.ErrBadConn
		}
		// Send command
		err := mc.writeCommandPacketStr(comStmtPrepare, query)
		if err != nil {
		// STMT_PREPARE is safe to retry. So we can return ErrBadConn here.
		mc.log(err)
		return nil, driver.ErrBadConn
		}

		stmt := &mysqlStmt{
		mc: mc,
		}

		// Read Result
		columnCount, err := stmt.readPrepareResultPacket()
		if err == nil {
		if stmt.paramCount > 0 {
		if err = mc.readUntilEOF(); err != nil {
		return nil, err
		}
		}

		if columnCount > 0 {
		err = mc.readUntilEOF()
		}
		}

		return stmt, err
		}

		func (mc *mysqlConn) interpolateParams(query string, args []driver.Value) (string, error) {
		// Number of ? should be same to len(args)
		if strings.Count(query, "?") != len(args) {
		return "", driver.ErrSkip
		}

		buf, err := mc.buf.takeCompleteBuffer()
		if err != nil {
		// can not take the buffer. Something must be wrong with the connection
		mc.log(err)
		return "", ErrInvalidConn
		}
		buf = buf[:0]
		argPos := 0

		for i := 0; i < len(query); i++ {
		q := strings.IndexByte(query[i:], '?')
		if q == -1 {
		buf = append(buf, query[i:]...)
		break
		}
		buf = append(buf, query[i:i+q]...)
		i += q

		arg := args[argPos]
		argPos++

		if arg == nil {
		buf = append(buf, "NULL"...)
		continue
		}

		switch v := arg.(type) {
		case int64:
		buf = strconv.AppendInt(buf, v, 10)
		case uint64:
		// Handle uint64 explicitly because our custom ConvertValue emits unsigned values
		buf = strconv.AppendUint(buf, v, 10)
		case float64:
		buf = strconv.AppendFloat(buf, v, 'g', -1, 64)
		case bool:
		if v {
		buf = append(buf, '1')
		} else {
		buf = append(buf, '0')
		}
		case time.Time:
		if v.IsZero() {
		buf = append(buf, "'0000-00-00'"...)
		} else {
		buf = append(buf, '\'')
		buf, err = appendDateTime(buf, v.In(mc.cfg.Loc), mc.cfg.timeTruncate)
		if err != nil {
		return "", err
		}
		buf = append(buf, '\'')
		}
		case json.RawMessage:
		buf = append(buf, '\'')
		if mc.status&statusNoBackslashEscapes == 0 {
		buf = escapeBytesBackslash(buf, v)
		} else {
		buf = escapeBytesQuotes(buf, v)
		}
		buf = append(buf, '\'')
		case []byte:
		if v == nil {
		buf = append(buf, "NULL"...)
		} else {
		buf = append(buf, "_binary'"...)
		if mc.status&statusNoBackslashEscapes == 0 {
		buf = escapeBytesBackslash(buf, v)
		} else {
		buf = escapeBytesQuotes(buf, v)
		}
		buf = append(buf, '\'')
		}
		case string:
		buf = append(buf, '\'')
		if mc.status&statusNoBackslashEscapes == 0 {
		buf = escapeStringBackslash(buf, v)
		} else {
		buf = escapeStringQuotes(buf, v)
		}
		buf = append(buf, '\'')
		default:
		return "", driver.ErrSkip
		}

		if len(buf)+4 > mc.maxAllowedPacket {
		return "", driver.ErrSkip
		}
		}
		if argPos != len(args) {
		return "", driver.ErrSkip
		}
		return string(buf), nil
		}

		func (mc *mysqlConn) Exec(query string, args []driver.Value) (driver.Result, error) {
		if mc.closed.Load() {
		mc.log(ErrInvalidConn)
		return nil, driver.ErrBadConn
		}
		if len(args) != 0 {
		if !mc.cfg.InterpolateParams {
		return nil, driver.ErrSkip
		}
		// try to interpolate the parameters to save extra roundtrips for preparing and closing a statement
		prepared, err := mc.interpolateParams(query, args)
		if err != nil {
		return nil, err
		}
		query = prepared
		}

		err := mc.exec(query)
		if err == nil {
		copied := mc.result
		return &copied, err
		}
		return nil, mc.markBadConn(err)
		}

		// Internal function to execute commands
		func (mc *mysqlConn) exec(query string) error {
		handleOk := mc.clearResult()
		// Send command
		if err := mc.writeCommandPacketStr(comQuery, query); err != nil {
		return mc.markBadConn(err)
		}

		// Read Result
		resLen, err := handleOk.readResultSetHeaderPacket()
		if err != nil {
		return err
		}

		if resLen > 0 {
		// columns
		if err := mc.readUntilEOF(); err != nil {
		return err
		}

		// rows
		if err := mc.readUntilEOF(); err != nil {
		return err
		}
		}

		return handleOk.discardResults()
		}

		func (mc *mysqlConn) Query(query string, args []driver.Value) (driver.Rows, error) {
		return mc.query(query, args)
		}

		func (mc mysqlConn) query(query string, args []driver.Value) (textRows, error) {
		handleOk := mc.clearResult()

		if mc.closed.Load() {
		mc.log(ErrInvalidConn)
		return nil, driver.ErrBadConn
		}
		if len(args) != 0 {
		if !mc.cfg.InterpolateParams {
		return nil, driver.ErrSkip
		}
		// try client-side prepare to reduce roundtrip
		prepared, err := mc.interpolateParams(query, args)
		if err != nil {
		return nil, err
		}
		query = prepared
		}
		// Send command
		err := mc.writeCommandPacketStr(comQuery, query)
		if err == nil {
		// Read Result
		var resLen int
		resLen, err = handleOk.readResultSetHeaderPacket()
		if err == nil {
		rows := new(textRows)
		rows.mc = mc

		if resLen == 0 {
		rows.rs.done = true

		switch err := rows.NextResultSet(); err {
		case nil, io.EOF:
		return rows, nil
		default:
		return nil, err
		}
		}

		// Columns
		rows.rs.columns, err = mc.readColumns(resLen)
		return rows, err
		}
		}
		return nil, mc.markBadConn(err)
		}

		// Gets the value of the given MySQL System Variable
		// The returned byte slice is only valid until the next read
		func (mc *mysqlConn) getSystemVar(name string) ([]byte, error) {
		// Send command
		handleOk := mc.clearResult()
		if err := mc.writeCommandPacketStr(comQuery, "SELECT @@"+name); err != nil {
		return nil, err
		}

		// Read Result
		resLen, err := handleOk.readResultSetHeaderPacket()
		if err == nil {
		rows := new(textRows)
		rows.mc = mc
		rows.rs.columns = []mysqlField{{fieldType: fieldTypeVarChar}}

		if resLen > 0 {
		// Columns
		if err := mc.readUntilEOF(); err != nil {
		return nil, err
		}
		}

		dest := make([]driver.Value, resLen)
		if err = rows.readRow(dest); err == nil {
		return dest[0].([]byte), mc.readUntilEOF()
		}
		}
		return nil, err
		}

		// finish is called when the query has canceled.
		func (mc *mysqlConn) cancel(err error) {
		mc.canceled.Set(err)
		mc.cleanup()
		}

		// finish is called when the query has succeeded.
		func (mc *mysqlConn) finish() {
		if !mc.watching \|\| mc.finished == nil {
		return
		}
		select {
		case mc.finished <- struct{}{}:
		mc.watching = false
		case <-mc.closech:
		}
		}

		// Ping implements driver.Pinger interface
		func (mc *mysqlConn) Ping(ctx context.Context) (err error) {
		if mc.closed.Load() {
		mc.log(ErrInvalidConn)
		return driver.ErrBadConn
		}

		if err = mc.watchCancel(ctx); err != nil {
		return
		}
		defer mc.finish()

		handleOk := mc.clearResult()
		if err = mc.writeCommandPacket(comPing); err != nil {
		return mc.markBadConn(err)
		}

		return handleOk.readResultOK()
		}

		// BeginTx implements driver.ConnBeginTx interface
		func (mc *mysqlConn) BeginTx(ctx context.Context, opts driver.TxOptions) (driver.Tx, error) {
		if mc.closed.Load() {
		return nil, driver.ErrBadConn
		}

		if err := mc.watchCancel(ctx); err != nil {
		return nil, err
		}
		defer mc.finish()

		if sql.IsolationLevel(opts.Isolation) != sql.LevelDefault {
		level, err := mapIsolationLevel(opts.Isolation)
		if err != nil {
		return nil, err
		}
		err = mc.exec("SET TRANSACTION ISOLATION LEVEL " + level)
		if err != nil {
		return nil, err
		}
		}

		return mc.begin(opts.ReadOnly)
		}

		func (mc *mysqlConn) QueryContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Rows, error) {
		dargs, err := namedValueToValue(args)
		if err != nil {
		return nil, err
		}

		if err := mc.watchCancel(ctx); err != nil {
		return nil, err
		}

		rows, err := mc.query(query, dargs)
		if err != nil {
		mc.finish()
		return nil, err
		}
		rows.finish = mc.finish
		return rows, err
		}

		func (mc *mysqlConn) ExecContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Result, error) {
		dargs, err := namedValueToValue(args)
		if err != nil {
		return nil, err
		}

		if err := mc.watchCancel(ctx); err != nil {
		return nil, err
		}
		defer mc.finish()

		return mc.Exec(query, dargs)
		}

		func (mc *mysqlConn) PrepareContext(ctx context.Context, query string) (driver.Stmt, error) {
		if err := mc.watchCancel(ctx); err != nil {
		return nil, err
		}

		stmt, err := mc.Prepare(query)
		mc.finish()
		if err != nil {
		return nil, err
		}

		select {
		default:
		case <-ctx.Done():
		stmt.Close()
		return nil, ctx.Err()
		}
		return stmt, nil
		}

		func (stmt *mysqlStmt) QueryContext(ctx context.Context, args []driver.NamedValue) (driver.Rows, error) {
		dargs, err := namedValueToValue(args)
		if err != nil {
		return nil, err
		}

		if err := stmt.mc.watchCancel(ctx); err != nil {
		return nil, err
		}

		rows, err := stmt.query(dargs)
		if err != nil {
		stmt.mc.finish()
		return nil, err
		}
		rows.finish = stmt.mc.finish
		return rows, err
		}

		func (stmt *mysqlStmt) ExecContext(ctx context.Context, args []driver.NamedValue) (driver.Result, error) {
		dargs, err := namedValueToValue(args)
		if err != nil {
		return nil, err
		}

		if err := stmt.mc.watchCancel(ctx); err != nil {
		return nil, err
		}
		defer stmt.mc.finish()

		return stmt.Exec(dargs)
		}

		func (mc *mysqlConn) watchCancel(ctx context.Context) error {
		if mc.watching {
		// Reach here if canceled,
		// so the connection is already invalid
		mc.cleanup()
		return nil
		}
		// When ctx is already cancelled, don't watch it.
		if err := ctx.Err(); err != nil {
		return err
		}
		// When ctx is not cancellable, don't watch it.
		if ctx.Done() == nil {
		return nil
		}
		// When watcher is not alive, can't watch it.
		if mc.watcher == nil {
		return nil
		}

		mc.watching = true
		mc.watcher <- ctx
		return nil
		}

		func (mc *mysqlConn) startWatcher() {
		watcher := make(chan context.Context, 1)
		mc.watcher = watcher
		finished := make(chan struct{})
		mc.finished = finished
		go func() {
		for {
		var ctx context.Context
		select {
		case ctx = <-watcher:
		case <-mc.closech:
		return
		}

		select {
		case <-ctx.Done():
		mc.cancel(ctx.Err())
		case <-finished:
		case <-mc.closech:
		return
		}
		}
		}()
		}

		func (mc mysqlConn) CheckNamedValue(nv driver.NamedValue) (err error) {
		nv.Value, err = converter{}.ConvertValue(nv.Value)
		return
		}

		// ResetSession implements driver.SessionResetter.
		// (From Go 1.10)
		func (mc *mysqlConn) ResetSession(ctx context.Context) error {
		if mc.closed.Load() {
		return driver.ErrBadConn
		}

		// Perform a stale connection check. We only perform this check for
		// the first query on a connection that has been checked out of the
		// connection pool: a fresh connection from the pool is more likely
		// to be stale, and it has not performed any previous writes that
		// could cause data corruption, so it's safe to return ErrBadConn
		// if the check fails.
		if mc.cfg.CheckConnLiveness {
		conn := mc.netConn
		if mc.rawConn != nil {
		conn = mc.rawConn
		}
		var err error
		if mc.cfg.ReadTimeout != 0 {
		err = conn.SetReadDeadline(time.Now().Add(mc.cfg.ReadTimeout))
		}
		if err == nil {
		err = connCheck(conn)
		}
		if err != nil {
		mc.log("closing bad idle connection: ", err)
		return driver.ErrBadConn
		}
		}

		return nil
		}

		// IsValid implements driver.Validator interface
		// (From Go 1.15)
		func (mc *mysqlConn) IsValid() bool {
		return !mc.closed.Load()
		}

documentation/licenses/github.com/go-sql-driver/mysql/connector.go

0 → 100644

+197 −0

Original line number	Diff line number	Diff line
		// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
		//
		// Copyright 2018 The Go-MySQL-Driver Authors. All rights reserved.
		//
		// 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/.

		package mysql

		import (
		"context"
		"database/sql/driver"
		"net"
		"os"
		"strconv"
		"strings"
		)

		type connector struct {
		cfg *Config // immutable private copy.
		encodedAttributes string // Encoded connection attributes.
		}

		func encodeConnectionAttributes(cfg *Config) string {
		connAttrsBuf := make([]byte, 0)

		// default connection attributes
		connAttrsBuf = appendLengthEncodedString(connAttrsBuf, connAttrClientName)
		connAttrsBuf = appendLengthEncodedString(connAttrsBuf, connAttrClientNameValue)
		connAttrsBuf = appendLengthEncodedString(connAttrsBuf, connAttrOS)
		connAttrsBuf = appendLengthEncodedString(connAttrsBuf, connAttrOSValue)
		connAttrsBuf = appendLengthEncodedString(connAttrsBuf, connAttrPlatform)
		connAttrsBuf = appendLengthEncodedString(connAttrsBuf, connAttrPlatformValue)
		connAttrsBuf = appendLengthEncodedString(connAttrsBuf, connAttrPid)
		connAttrsBuf = appendLengthEncodedString(connAttrsBuf, strconv.Itoa(os.Getpid()))
		serverHost, _, _ := net.SplitHostPort(cfg.Addr)
		if serverHost != "" {
		connAttrsBuf = appendLengthEncodedString(connAttrsBuf, connAttrServerHost)
		connAttrsBuf = appendLengthEncodedString(connAttrsBuf, serverHost)
		}

		// user-defined connection attributes
		for _, connAttr := range strings.Split(cfg.ConnectionAttributes, ",") {
		k, v, found := strings.Cut(connAttr, ":")
		if !found {
		continue
		}
		connAttrsBuf = appendLengthEncodedString(connAttrsBuf, k)
		connAttrsBuf = appendLengthEncodedString(connAttrsBuf, v)
		}

		return string(connAttrsBuf)
		}

		func newConnector(cfg Config) connector {
		encodedAttributes := encodeConnectionAttributes(cfg)
		return &connector{
		cfg: cfg,
		encodedAttributes: encodedAttributes,
		}
		}

		// Connect implements driver.Connector interface.
		// Connect returns a connection to the database.
		func (c *connector) Connect(ctx context.Context) (driver.Conn, error) {
		var err error

		// Invoke beforeConnect if present, with a copy of the configuration
		cfg := c.cfg
		if c.cfg.beforeConnect != nil {
		cfg = c.cfg.Clone()
		err = c.cfg.beforeConnect(ctx, cfg)
		if err != nil {
		return nil, err
		}
		}

		// New mysqlConn
		mc := &mysqlConn{
		maxAllowedPacket: maxPacketSize,
		maxWriteSize: maxPacketSize - 1,
		closech: make(chan struct{}),
		cfg: cfg,
		connector: c,
		}
		mc.parseTime = mc.cfg.ParseTime

		// Connect to Server
		dialsLock.RLock()
		dial, ok := dials[mc.cfg.Net]
		dialsLock.RUnlock()
		if ok {
		dctx := ctx
		if mc.cfg.Timeout > 0 {
		var cancel context.CancelFunc
		dctx, cancel = context.WithTimeout(ctx, c.cfg.Timeout)
		defer cancel()
		}
		mc.netConn, err = dial(dctx, mc.cfg.Addr)
		} else {
		nd := net.Dialer{Timeout: mc.cfg.Timeout}
		mc.netConn, err = nd.DialContext(ctx, mc.cfg.Net, mc.cfg.Addr)
		}
		if err != nil {
		return nil, err
		}
		mc.rawConn = mc.netConn

		// Enable TCP Keepalives on TCP connections
		if tc, ok := mc.netConn.(*net.TCPConn); ok {
		if err := tc.SetKeepAlive(true); err != nil {
		c.cfg.Logger.Print(err)
		}
		}

		// Call startWatcher for context support (From Go 1.8)
		mc.startWatcher()
		if err := mc.watchCancel(ctx); err != nil {
		mc.cleanup()
		return nil, err
		}
		defer mc.finish()

		mc.buf = newBuffer(mc.netConn)

		// Set I/O timeouts
		mc.buf.timeout = mc.cfg.ReadTimeout
		mc.writeTimeout = mc.cfg.WriteTimeout

		// Reading Handshake Initialization Packet
		authData, plugin, err := mc.readHandshakePacket()
		if err != nil {
		mc.cleanup()
		return nil, err
		}

		if plugin == "" {
		plugin = defaultAuthPlugin
		}

		// Send Client Authentication Packet
		authResp, err := mc.auth(authData, plugin)
		if err != nil {
		// try the default auth plugin, if using the requested plugin failed
		c.cfg.Logger.Print("could not use requested auth plugin '"+plugin+"': ", err.Error())
		plugin = defaultAuthPlugin
		authResp, err = mc.auth(authData, plugin)
		if err != nil {
		mc.cleanup()
		return nil, err
		}
		}
		if err = mc.writeHandshakeResponsePacket(authResp, plugin); err != nil {
		mc.cleanup()
		return nil, err
		}

		// Handle response to auth packet, switch methods if possible
		if err = mc.handleAuthResult(authData, plugin); err != nil {
		// Authentication failed and MySQL has already closed the connection
		// (https://dev.mysql.com/doc/internals/en/authentication-fails.html).
		// Do not send COM_QUIT, just cleanup and return the error.
		mc.cleanup()
		return nil, err
		}

		if mc.cfg.MaxAllowedPacket > 0 {
		mc.maxAllowedPacket = mc.cfg.MaxAllowedPacket
		} else {
		// Get max allowed packet size
		maxap, err := mc.getSystemVar("max_allowed_packet")
		if err != nil {
		mc.Close()
		return nil, err
		}
		mc.maxAllowedPacket = stringToInt(maxap) - 1
		}
		if mc.maxAllowedPacket < maxPacketSize {
		mc.maxWriteSize = mc.maxAllowedPacket
		}

		// Handle DSN Params
		err = mc.handleParams()
		if err != nil {
		mc.Close()
		return nil, err
		}

		return mc, nil
		}

		// Driver implements driver.Connector interface.
		// Driver returns &MySQLDriver{}.
		func (c *connector) Driver() driver.Driver {
		return &MySQLDriver{}
		}

documentation/licenses/github.com/go-sql-driver/mysql/const.go

0 → 100644

+187 −0

Original line number	Diff line number	Diff line
		// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
		//
		// Copyright 2012 The Go-MySQL-Driver Authors. All rights reserved.
		//
		// 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/.

		package mysql

		import "runtime"

		const (
		defaultAuthPlugin = "mysql_native_password"
		defaultMaxAllowedPacket = 64 << 20 // 64 MiB. See https://github.com/go-sql-driver/mysql/issues/1355
		minProtocolVersion = 10
		maxPacketSize = 1<<24 - 1
		timeFormat = "2006-01-02 15:04:05.999999"

		// Connection attributes
		// See https://dev.mysql.com/doc/refman/8.0/en/performance-schema-connection-attribute-tables.html#performance-schema-connection-attributes-available
		connAttrClientName = "_client_name"
		connAttrClientNameValue = "Go-MySQL-Driver"
		connAttrOS = "_os"
		connAttrOSValue = runtime.GOOS
		connAttrPlatform = "_platform"
		connAttrPlatformValue = runtime.GOARCH
		connAttrPid = "_pid"
		connAttrServerHost = "_server_host"
		)

		// MySQL constants documentation:
		// http://dev.mysql.com/doc/internals/en/client-server-protocol.html

		const (
		iOK byte = 0x00
		iAuthMoreData byte = 0x01
		iLocalInFile byte = 0xfb
		iEOF byte = 0xfe
		iERR byte = 0xff
		)

		// https://dev.mysql.com/doc/internals/en/capability-flags.html#packet-Protocol::CapabilityFlags
		type clientFlag uint32

		const (
		clientLongPassword clientFlag = 1 << iota
		clientFoundRows
		clientLongFlag
		clientConnectWithDB
		clientNoSchema
		clientCompress
		clientODBC
		clientLocalFiles
		clientIgnoreSpace
		clientProtocol41
		clientInteractive
		clientSSL
		clientIgnoreSIGPIPE
		clientTransactions
		clientReserved
		clientSecureConn
		clientMultiStatements
		clientMultiResults
		clientPSMultiResults
		clientPluginAuth
		clientConnectAttrs
		clientPluginAuthLenEncClientData
		clientCanHandleExpiredPasswords
		clientSessionTrack
		clientDeprecateEOF
		)

		const (
		comQuit byte = iota + 1
		comInitDB
		comQuery
		comFieldList
		comCreateDB
		comDropDB
		comRefresh
		comShutdown
		comStatistics
		comProcessInfo
		comConnect
		comProcessKill
		comDebug
		comPing
		comTime
		comDelayedInsert
		comChangeUser
		comBinlogDump
		comTableDump
		comConnectOut
		comRegisterSlave
		comStmtPrepare
		comStmtExecute
		comStmtSendLongData
		comStmtClose
		comStmtReset
		comSetOption
		comStmtFetch
		)

		// https://dev.mysql.com/doc/internals/en/com-query-response.html#packet-Protocol::ColumnType
		type fieldType byte

		const (
		fieldTypeDecimal fieldType = iota
		fieldTypeTiny
		fieldTypeShort
		fieldTypeLong
		fieldTypeFloat
		fieldTypeDouble
		fieldTypeNULL
		fieldTypeTimestamp
		fieldTypeLongLong
		fieldTypeInt24
		fieldTypeDate
		fieldTypeTime
		fieldTypeDateTime
		fieldTypeYear
		fieldTypeNewDate
		fieldTypeVarChar
		fieldTypeBit
		)
		const (
		fieldTypeJSON fieldType = iota + 0xf5
		fieldTypeNewDecimal
		fieldTypeEnum
		fieldTypeSet
		fieldTypeTinyBLOB
		fieldTypeMediumBLOB
		fieldTypeLongBLOB
		fieldTypeBLOB
		fieldTypeVarString
		fieldTypeString
		fieldTypeGeometry
		)

		type fieldFlag uint16

		const (
		flagNotNULL fieldFlag = 1 << iota
		flagPriKey
		flagUniqueKey
		flagMultipleKey
		flagBLOB
		flagUnsigned
		flagZeroFill
		flagBinary
		flagEnum
		flagAutoIncrement
		flagTimestamp
		flagSet
		flagUnknown1
		flagUnknown2
		flagUnknown3
		flagUnknown4
		)

		// http://dev.mysql.com/doc/internals/en/status-flags.html
		type statusFlag uint16

		const (
		statusInTrans statusFlag = 1 << iota
		statusInAutocommit
		statusReserved // Not in documentation
		statusMoreResultsExists
		statusNoGoodIndexUsed
		statusNoIndexUsed
		statusCursorExists
		statusLastRowSent
		statusDbDropped
		statusNoBackslashEscapes
		statusMetadataChanged
		statusQueryWasSlow
		statusPsOutParams
		statusInTransReadonly
		statusSessionStateChanged
		)

		const (
		cachingSha2PasswordRequestPublicKey = 2
		cachingSha2PasswordFastAuthSuccess = 3
		cachingSha2PasswordPerformFullAuthentication = 4
		)

documentation/licenses/github.com/go-sql-driver/mysql/driver.go

0 → 100644

+118 −0

Original line number	Diff line number	Diff line
		// Copyright 2012 The Go-MySQL-Driver Authors. All rights reserved.
		//
		// 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/.

		// Package mysql provides a MySQL driver for Go's database/sql package.
		//
		// The driver should be used via the database/sql package:
		//
		// import "database/sql"
		// import _ "github.com/go-sql-driver/mysql"
		//
		// db, err := sql.Open("mysql", "user:password@/dbname")
		//
		// See https://github.com/go-sql-driver/mysql#usage for details
		package mysql

		import (
		"context"
		"database/sql"
		"database/sql/driver"
		"net"
		"sync"
		)

		// MySQLDriver is exported to make the driver directly accessible.
		// In general the driver is used via the database/sql package.
		type MySQLDriver struct{}

		// DialFunc is a function which can be used to establish the network connection.
		// Custom dial functions must be registered with RegisterDial
		//
		// Deprecated: users should register a DialContextFunc instead
		type DialFunc func(addr string) (net.Conn, error)

		// DialContextFunc is a function which can be used to establish the network connection.
		// Custom dial functions must be registered with RegisterDialContext
		type DialContextFunc func(ctx context.Context, addr string) (net.Conn, error)

		var (
		dialsLock sync.RWMutex
		dials map[string]DialContextFunc
		)

		// RegisterDialContext registers a custom dial function. It can then be used by the
		// network address mynet(addr), where mynet is the registered new network.
		// The current context for the connection and its address is passed to the dial function.
		func RegisterDialContext(net string, dial DialContextFunc) {
		dialsLock.Lock()
		defer dialsLock.Unlock()
		if dials == nil {
		dials = make(map[string]DialContextFunc)
		}
		dials[net] = dial
		}

		// DeregisterDialContext removes the custom dial function registered with the given net.
		func DeregisterDialContext(net string) {
		dialsLock.Lock()
		defer dialsLock.Unlock()
		if dials != nil {
		delete(dials, net)
		}
		}

		// RegisterDial registers a custom dial function. It can then be used by the
		// network address mynet(addr), where mynet is the registered new network.
		// addr is passed as a parameter to the dial function.
		//
		// Deprecated: users should call RegisterDialContext instead
		func RegisterDial(network string, dial DialFunc) {
		RegisterDialContext(network, func(_ context.Context, addr string) (net.Conn, error) {
		return dial(addr)
		})
		}

		// Open new Connection.
		// See https://github.com/go-sql-driver/mysql#dsn-data-source-name for how
		// the DSN string is formatted
		func (d MySQLDriver) Open(dsn string) (driver.Conn, error) {
		cfg, err := ParseDSN(dsn)
		if err != nil {
		return nil, err
		}
		c := newConnector(cfg)
		return c.Connect(context.Background())
		}

		// This variable can be replaced with -ldflags like below:
		// go build "-ldflags=-X github.com/go-sql-driver/mysql.driverName=custom"
		var driverName = "mysql"

		func init() {
		if driverName != "" {
		sql.Register(driverName, &MySQLDriver{})
		}
		}

		// NewConnector returns new driver.Connector.
		func NewConnector(cfg *Config) (driver.Connector, error) {
		cfg = cfg.Clone()
		// normalize the contents of cfg so calls to NewConnector have the same
		// behavior as MySQLDriver.OpenConnector
		if err := cfg.normalize(); err != nil {
		return nil, err
		}
		return newConnector(cfg), nil
		}

		// OpenConnector implements driver.DriverContext.
		func (d MySQLDriver) OpenConnector(dsn string) (driver.Connector, error) {
		cfg, err := ParseDSN(dsn)
		if err != nil {
		return nil, err
		}
		return newConnector(cfg), nil
		}

documentation/licenses/github.com/go-sql-driver/mysql/dsn.go

0 → 100644

+653 −0

Original line number	Diff line number	Diff line
		// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
		//
		// Copyright 2016 The Go-MySQL-Driver Authors. All rights reserved.
		//
		// 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/.

		package mysql

		import (
		"bytes"
		"context"
		"crypto/rsa"
		"crypto/tls"
		"errors"
		"fmt"
		"math/big"
		"net"
		"net/url"
		"sort"
		"strconv"
		"strings"
		"time"
		)

		var (
		errInvalidDSNUnescaped = errors.New("invalid DSN: did you forget to escape a param value?")
		errInvalidDSNAddr = errors.New("invalid DSN: network address not terminated (missing closing brace)")
		errInvalidDSNNoSlash = errors.New("invalid DSN: missing the slash separating the database name")
		errInvalidDSNUnsafeCollation = errors.New("invalid DSN: interpolateParams can not be used with unsafe collations")
		)

		// Config is a configuration parsed from a DSN string.
		// If a new Config is created instead of being parsed from a DSN string,
		// the NewConfig function should be used, which sets default values.
		type Config struct {
		// non boolean fields

		User string // Username
		Passwd string // Password (requires User)
		Net string // Network (e.g. "tcp", "tcp6", "unix". default: "tcp")
		Addr string // Address (default: "127.0.0.1:3306" for "tcp" and "/tmp/mysql.sock" for "unix")
		DBName string // Database name
		Params map[string]string // Connection parameters
		ConnectionAttributes string // Connection Attributes, comma-delimited string of user-defined "key:value" pairs
		Collation string // Connection collation
		Loc *time.Location // Location for time.Time values
		MaxAllowedPacket int // Max packet size allowed
		ServerPubKey string // Server public key name
		TLSConfig string // TLS configuration name
		TLS *tls.Config // TLS configuration, its priority is higher than TLSConfig
		Timeout time.Duration // Dial timeout
		ReadTimeout time.Duration // I/O read timeout
		WriteTimeout time.Duration // I/O write timeout
		Logger Logger // Logger

		// boolean fields

		AllowAllFiles bool // Allow all files to be used with LOAD DATA LOCAL INFILE
		AllowCleartextPasswords bool // Allows the cleartext client side plugin
		AllowFallbackToPlaintext bool // Allows fallback to unencrypted connection if server does not support TLS
		AllowNativePasswords bool // Allows the native password authentication method
		AllowOldPasswords bool // Allows the old insecure password method
		CheckConnLiveness bool // Check connections for liveness before using them
		ClientFoundRows bool // Return number of matching rows instead of rows changed
		ColumnsWithAlias bool // Prepend table alias to column names
		InterpolateParams bool // Interpolate placeholders into query string
		MultiStatements bool // Allow multiple statements in one query
		ParseTime bool // Parse time values to time.Time
		RejectReadOnly bool // Reject read-only connections

		// unexported fields. new options should be come here

		beforeConnect func(context.Context, *Config) error // Invoked before a connection is established
		pubKey *rsa.PublicKey // Server public key
		timeTruncate time.Duration // Truncate time.Time values to the specified duration
		}

		// Functional Options Pattern
		// https://dave.cheney.net/2014/10/17/functional-options-for-friendly-apis
		type Option func(*Config) error

		// NewConfig creates a new Config and sets default values.
		func NewConfig() *Config {
		cfg := &Config{
		Loc: time.UTC,
		MaxAllowedPacket: defaultMaxAllowedPacket,
		Logger: defaultLogger,
		AllowNativePasswords: true,
		CheckConnLiveness: true,
		}

		return cfg
		}

		// Apply applies the given options to the Config object.
		func (c *Config) Apply(opts ...Option) error {
		for _, opt := range opts {
		err := opt(c)
		if err != nil {
		return err
		}
		}
		return nil
		}

		// TimeTruncate sets the time duration to truncate time.Time values in
		// query parameters.
		func TimeTruncate(d time.Duration) Option {
		return func(cfg *Config) error {
		cfg.timeTruncate = d
		return nil
		}
		}

		// BeforeConnect sets the function to be invoked before a connection is established.
		func BeforeConnect(fn func(context.Context, *Config) error) Option {
		return func(cfg *Config) error {
		cfg.beforeConnect = fn
		return nil
		}
		}

		func (cfg Config) Clone() Config {
		cp := *cfg
		if cp.TLS != nil {
		cp.TLS = cfg.TLS.Clone()
		}
		if len(cp.Params) > 0 {
		cp.Params = make(map[string]string, len(cfg.Params))
		for k, v := range cfg.Params {
		cp.Params[k] = v
		}
		}
		if cfg.pubKey != nil {
		cp.pubKey = &rsa.PublicKey{
		N: new(big.Int).Set(cfg.pubKey.N),
		E: cfg.pubKey.E,
		}
		}
		return &cp
		}

		func (cfg *Config) normalize() error {
		if cfg.InterpolateParams && cfg.Collation != "" && unsafeCollations[cfg.Collation] {
		return errInvalidDSNUnsafeCollation
		}

		// Set default network if empty
		if cfg.Net == "" {
		cfg.Net = "tcp"
		}

		// Set default address if empty
		if cfg.Addr == "" {
		switch cfg.Net {
		case "tcp":
		cfg.Addr = "127.0.0.1:3306"
		case "unix":
		cfg.Addr = "/tmp/mysql.sock"
		default:
		return errors.New("default addr for network '" + cfg.Net + "' unknown")
		}
		} else if cfg.Net == "tcp" {
		cfg.Addr = ensureHavePort(cfg.Addr)
		}

		if cfg.TLS == nil {
		switch cfg.TLSConfig {
		case "false", "":
		// don't set anything
		case "true":
		cfg.TLS = &tls.Config{}
		case "skip-verify":
		cfg.TLS = &tls.Config{InsecureSkipVerify: true}
		case "preferred":
		cfg.TLS = &tls.Config{InsecureSkipVerify: true}
		cfg.AllowFallbackToPlaintext = true
		default:
		cfg.TLS = getTLSConfigClone(cfg.TLSConfig)
		if cfg.TLS == nil {
		return errors.New("invalid value / unknown config name: " + cfg.TLSConfig)
		}
		}
		}

		if cfg.TLS != nil && cfg.TLS.ServerName == "" && !cfg.TLS.InsecureSkipVerify {
		host, _, err := net.SplitHostPort(cfg.Addr)
		if err == nil {
		cfg.TLS.ServerName = host
		}
		}

		if cfg.ServerPubKey != "" {
		cfg.pubKey = getServerPubKey(cfg.ServerPubKey)
		if cfg.pubKey == nil {
		return errors.New("invalid value / unknown server pub key name: " + cfg.ServerPubKey)
		}
		}

		if cfg.Logger == nil {
		cfg.Logger = defaultLogger
		}

		return nil
		}

		func writeDSNParam(buf bytes.Buffer, hasParam bool, name, value string) {
		buf.Grow(1 + len(name) + 1 + len(value))
		if !*hasParam {
		*hasParam = true
		buf.WriteByte('?')
		} else {
		buf.WriteByte('&')
		}
		buf.WriteString(name)
		buf.WriteByte('=')
		buf.WriteString(value)
		}

		// FormatDSN formats the given Config into a DSN string which can be passed to
		// the driver.
		//
		// Note: use [NewConnector] and [database/sql.OpenDB] to open a connection from a [*Config].
		func (cfg *Config) FormatDSN() string {
		var buf bytes.Buffer

		// [username[:password]@]
		if len(cfg.User) > 0 {
		buf.WriteString(cfg.User)
		if len(cfg.Passwd) > 0 {
		buf.WriteByte(':')
		buf.WriteString(cfg.Passwd)
		}
		buf.WriteByte('@')
		}

		// [protocol[(address)]]
		if len(cfg.Net) > 0 {
		buf.WriteString(cfg.Net)
		if len(cfg.Addr) > 0 {
		buf.WriteByte('(')
		buf.WriteString(cfg.Addr)
		buf.WriteByte(')')
		}
		}

		// /dbname
		buf.WriteByte('/')
		buf.WriteString(url.PathEscape(cfg.DBName))

		// [?param1=value1&...&paramN=valueN]
		hasParam := false

		if cfg.AllowAllFiles {
		hasParam = true
		buf.WriteString("?allowAllFiles=true")
		}

		if cfg.AllowCleartextPasswords {
		writeDSNParam(&buf, &hasParam, "allowCleartextPasswords", "true")
		}

		if cfg.AllowFallbackToPlaintext {
		writeDSNParam(&buf, &hasParam, "allowFallbackToPlaintext", "true")
		}

		if !cfg.AllowNativePasswords {
		writeDSNParam(&buf, &hasParam, "allowNativePasswords", "false")
		}

		if cfg.AllowOldPasswords {
		writeDSNParam(&buf, &hasParam, "allowOldPasswords", "true")
		}

		if !cfg.CheckConnLiveness {
		writeDSNParam(&buf, &hasParam, "checkConnLiveness", "false")
		}

		if cfg.ClientFoundRows {
		writeDSNParam(&buf, &hasParam, "clientFoundRows", "true")
		}

		if col := cfg.Collation; col != "" {
		writeDSNParam(&buf, &hasParam, "collation", col)
		}

		if cfg.ColumnsWithAlias {
		writeDSNParam(&buf, &hasParam, "columnsWithAlias", "true")
		}

		if cfg.InterpolateParams {
		writeDSNParam(&buf, &hasParam, "interpolateParams", "true")
		}

		if cfg.Loc != time.UTC && cfg.Loc != nil {
		writeDSNParam(&buf, &hasParam, "loc", url.QueryEscape(cfg.Loc.String()))
		}

		if cfg.MultiStatements {
		writeDSNParam(&buf, &hasParam, "multiStatements", "true")
		}

		if cfg.ParseTime {
		writeDSNParam(&buf, &hasParam, "parseTime", "true")
		}

		if cfg.timeTruncate > 0 {
		writeDSNParam(&buf, &hasParam, "timeTruncate", cfg.timeTruncate.String())
		}

		if cfg.ReadTimeout > 0 {
		writeDSNParam(&buf, &hasParam, "readTimeout", cfg.ReadTimeout.String())
		}

		if cfg.RejectReadOnly {
		writeDSNParam(&buf, &hasParam, "rejectReadOnly", "true")
		}

		if len(cfg.ServerPubKey) > 0 {
		writeDSNParam(&buf, &hasParam, "serverPubKey", url.QueryEscape(cfg.ServerPubKey))
		}

		if cfg.Timeout > 0 {
		writeDSNParam(&buf, &hasParam, "timeout", cfg.Timeout.String())
		}

		if len(cfg.TLSConfig) > 0 {
		writeDSNParam(&buf, &hasParam, "tls", url.QueryEscape(cfg.TLSConfig))
		}

		if cfg.WriteTimeout > 0 {
		writeDSNParam(&buf, &hasParam, "writeTimeout", cfg.WriteTimeout.String())
		}

		if cfg.MaxAllowedPacket != defaultMaxAllowedPacket {
		writeDSNParam(&buf, &hasParam, "maxAllowedPacket", strconv.Itoa(cfg.MaxAllowedPacket))
		}

		// other params
		if cfg.Params != nil {
		var params []string
		for param := range cfg.Params {
		params = append(params, param)
		}
		sort.Strings(params)
		for _, param := range params {
		writeDSNParam(&buf, &hasParam, param, url.QueryEscape(cfg.Params[param]))
		}
		}

		return buf.String()
		}

		// ParseDSN parses the DSN string to a Config
		func ParseDSN(dsn string) (cfg *Config, err error) {
		// New config with some default values
		cfg = NewConfig()

		// [user[:password]@][net[(addr)]]/dbname[?param1=value1&paramN=valueN]
		// Find the last '/' (since the password or the net addr might contain a '/')
		foundSlash := false
		for i := len(dsn) - 1; i >= 0; i-- {
		if dsn[i] == '/' {
		foundSlash = true
		var j, k int

		// left part is empty if i <= 0
		if i > 0 {
		// [username[:password]@][protocol[(address)]]
		// Find the last '@' in dsn[:i]
		for j = i; j >= 0; j-- {
		if dsn[j] == '@' {
		// username[:password]
		// Find the first ':' in dsn[:j]
		for k = 0; k < j; k++ {
		if dsn[k] == ':' {
		cfg.Passwd = dsn[k+1 : j]
		break
		}
		}
		cfg.User = dsn[:k]

		break
		}
		}

		// [protocol[(address)]]
		// Find the first '(' in dsn[j+1:i]
		for k = j + 1; k < i; k++ {
		if dsn[k] == '(' {
		// dsn[i-1] must be == ')' if an address is specified
		if dsn[i-1] != ')' {
		if strings.ContainsRune(dsn[k+1:i], ')') {
		return nil, errInvalidDSNUnescaped
		}
		return nil, errInvalidDSNAddr
		}
		cfg.Addr = dsn[k+1 : i-1]
		break
		}
		}
		cfg.Net = dsn[j+1 : k]
		}

		// dbname[?param1=value1&...&paramN=valueN]
		// Find the first '?' in dsn[i+1:]
		for j = i + 1; j < len(dsn); j++ {
		if dsn[j] == '?' {
		if err = parseDSNParams(cfg, dsn[j+1:]); err != nil {
		return
		}
		break
		}
		}

		dbname := dsn[i+1 : j]
		if cfg.DBName, err = url.PathUnescape(dbname); err != nil {
		return nil, fmt.Errorf("invalid dbname %q: %w", dbname, err)
		}

		break
		}
		}

		if !foundSlash && len(dsn) > 0 {
		return nil, errInvalidDSNNoSlash
		}

		if err = cfg.normalize(); err != nil {
		return nil, err
		}
		return
		}

		// parseDSNParams parses the DSN "query string"
		// Values must be url.QueryEscape'ed
		func parseDSNParams(cfg *Config, params string) (err error) {
		for _, v := range strings.Split(params, "&") {
		key, value, found := strings.Cut(v, "=")
		if !found {
		continue
		}

		// cfg params
		switch key {
		// Disable INFILE allowlist / enable all files
		case "allowAllFiles":
		var isBool bool
		cfg.AllowAllFiles, isBool = readBool(value)
		if !isBool {
		return errors.New("invalid bool value: " + value)
		}

		// Use cleartext authentication mode (MySQL 5.5.10+)
		case "allowCleartextPasswords":
		var isBool bool
		cfg.AllowCleartextPasswords, isBool = readBool(value)
		if !isBool {
		return errors.New("invalid bool value: " + value)
		}

		// Allow fallback to unencrypted connection if server does not support TLS
		case "allowFallbackToPlaintext":
		var isBool bool
		cfg.AllowFallbackToPlaintext, isBool = readBool(value)
		if !isBool {
		return errors.New("invalid bool value: " + value)
		}

		// Use native password authentication
		case "allowNativePasswords":
		var isBool bool
		cfg.AllowNativePasswords, isBool = readBool(value)
		if !isBool {
		return errors.New("invalid bool value: " + value)
		}

		// Use old authentication mode (pre MySQL 4.1)
		case "allowOldPasswords":
		var isBool bool
		cfg.AllowOldPasswords, isBool = readBool(value)
		if !isBool {
		return errors.New("invalid bool value: " + value)
		}

		// Check connections for Liveness before using them
		case "checkConnLiveness":
		var isBool bool
		cfg.CheckConnLiveness, isBool = readBool(value)
		if !isBool {
		return errors.New("invalid bool value: " + value)
		}

		// Switch "rowsAffected" mode
		case "clientFoundRows":
		var isBool bool
		cfg.ClientFoundRows, isBool = readBool(value)
		if !isBool {
		return errors.New("invalid bool value: " + value)
		}

		// Collation
		case "collation":
		cfg.Collation = value

		case "columnsWithAlias":
		var isBool bool
		cfg.ColumnsWithAlias, isBool = readBool(value)
		if !isBool {
		return errors.New("invalid bool value: " + value)
		}

		// Compression
		case "compress":
		return errors.New("compression not implemented yet")

		// Enable client side placeholder substitution
		case "interpolateParams":
		var isBool bool
		cfg.InterpolateParams, isBool = readBool(value)
		if !isBool {
		return errors.New("invalid bool value: " + value)
		}

		// Time Location
		case "loc":
		if value, err = url.QueryUnescape(value); err != nil {
		return
		}
		cfg.Loc, err = time.LoadLocation(value)
		if err != nil {
		return
		}

		// multiple statements in one query
		case "multiStatements":
		var isBool bool
		cfg.MultiStatements, isBool = readBool(value)
		if !isBool {
		return errors.New("invalid bool value: " + value)
		}

		// time.Time parsing
		case "parseTime":
		var isBool bool
		cfg.ParseTime, isBool = readBool(value)
		if !isBool {
		return errors.New("invalid bool value: " + value)
		}

		// time.Time truncation
		case "timeTruncate":
		cfg.timeTruncate, err = time.ParseDuration(value)
		if err != nil {
		return fmt.Errorf("invalid timeTruncate value: %v, error: %w", value, err)
		}

		// I/O read Timeout
		case "readTimeout":
		cfg.ReadTimeout, err = time.ParseDuration(value)
		if err != nil {
		return
		}

		// Reject read-only connections
		case "rejectReadOnly":
		var isBool bool
		cfg.RejectReadOnly, isBool = readBool(value)
		if !isBool {
		return errors.New("invalid bool value: " + value)
		}

		// Server public key
		case "serverPubKey":
		name, err := url.QueryUnescape(value)
		if err != nil {
		return fmt.Errorf("invalid value for server pub key name: %v", err)
		}
		cfg.ServerPubKey = name

		// Strict mode
		case "strict":
		panic("strict mode has been removed. See https://github.com/go-sql-driver/mysql/wiki/strict-mode")

		// Dial Timeout
		case "timeout":
		cfg.Timeout, err = time.ParseDuration(value)
		if err != nil {
		return
		}

		// TLS-Encryption
		case "tls":
		boolValue, isBool := readBool(value)
		if isBool {
		if boolValue {
		cfg.TLSConfig = "true"
		} else {
		cfg.TLSConfig = "false"
		}
		} else if vl := strings.ToLower(value); vl == "skip-verify" \|\| vl == "preferred" {
		cfg.TLSConfig = vl
		} else {
		name, err := url.QueryUnescape(value)
		if err != nil {
		return fmt.Errorf("invalid value for TLS config name: %v", err)
		}
		cfg.TLSConfig = name
		}

		// I/O write Timeout
		case "writeTimeout":
		cfg.WriteTimeout, err = time.ParseDuration(value)
		if err != nil {
		return
		}
		case "maxAllowedPacket":
		cfg.MaxAllowedPacket, err = strconv.Atoi(value)
		if err != nil {
		return
		}

		// Connection attributes
		case "connectionAttributes":
		connectionAttributes, err := url.QueryUnescape(value)
		if err != nil {
		return fmt.Errorf("invalid connectionAttributes value: %v", err)
		}
		cfg.ConnectionAttributes = connectionAttributes

		default:
		// lazy init
		if cfg.Params == nil {
		cfg.Params = make(map[string]string

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.config/chglog/CHANGELOG.tpl.md

.config/chglog/config.yml

.envrc

.gitignore

.gitlab-ci.yml

.gitlab/issue_templates/rfc.md

.gitlab/issue_templates/thoughts-and-ideas.md

documentation/licenses/filippo.io/edwards25519/LICENSE

documentation/licenses/github.com/fsnotify/fsnotify/LICENSE

documentation/licenses/github.com/go-sql-driver/mysql/.gitignore

documentation/licenses/github.com/go-sql-driver/mysql/AUTHORS

documentation/licenses/github.com/go-sql-driver/mysql/CHANGELOG.md

documentation/licenses/github.com/go-sql-driver/mysql/LICENSE

documentation/licenses/github.com/go-sql-driver/mysql/README.md

documentation/licenses/github.com/go-sql-driver/mysql/atomic_bool.go

documentation/licenses/github.com/go-sql-driver/mysql/atomic_bool_go118.go

documentation/licenses/github.com/go-sql-driver/mysql/auth.go

documentation/licenses/github.com/go-sql-driver/mysql/buffer.go

documentation/licenses/github.com/go-sql-driver/mysql/collations.go

documentation/licenses/github.com/go-sql-driver/mysql/conncheck.go

documentation/licenses/github.com/go-sql-driver/mysql/conncheck_dummy.go

documentation/licenses/github.com/go-sql-driver/mysql/connection.go

documentation/licenses/github.com/go-sql-driver/mysql/connector.go

documentation/licenses/github.com/go-sql-driver/mysql/const.go

documentation/licenses/github.com/go-sql-driver/mysql/driver.go

documentation/licenses/github.com/go-sql-driver/mysql/dsn.go