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Initial QSfera import

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Курнат Андрей
2026-06-07 10:20:04 +03:00
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Server/vendor/github.com/go-sql-driver/mysql/.gitignore
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.DS_Store
.DS_Store?
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.Spotlight-V100
.Trashes
Icon?
ehthumbs.db
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Server/vendor/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>
Ariel Mashraki <ariel at mashraki.co.il>
Arne Hormann <arnehormann at gmail.com>
Artur Melanchyk <artur.melanchyk@gmail.com>
Asta Xie <xiemengjun at gmail.com>
B Lamarche <blam413 at gmail.com>
Bes Dollma <bdollma@thousandeyes.com>
Bogdan Constantinescu <bog.con.bc at gmail.com>
Brad Higgins <brad at defined.net>
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>
Demouth <yuya at demouth.net>
Diego Dupin <diego.dupin at gmail.com>
Dirkjan Bussink <d.bussink 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>
Jakub Adamus <kratky at zobak.cz>
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>
Jiabin Zhang <jiabin.z at qq.com>
Jiajia Zhong <zhong2plus at gmail.com>
Jian Zhen <zhenjl at gmail.com>
Joe Mann <contact at joemann.co.uk>
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>
Luke Scott <luke at webconnex.com>
Lunny Xiao <xiaolunwen at gmail.com>
Maciej Zimnoch <maciej.zimnoch at codilime.com>
Michael Woolnough <michael.woolnough at gmail.com>
Minh Quang <minhquang4334 at gmail.com>
Morgan Tocker <tocker at gmail.com>
Nao Yokotsuka <yokotukanao 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.
Block, Inc.
Counting Ltd.
Defined Networking Inc.
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.
ThousandEyes
Zendesk Inc.
Server/vendor/github.com/go-sql-driver/mysql/CHANGELOG.md
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# Changelog
## v1.10.0 (2026-04-28)
* Fix `getSystemVar("max_allowed_packet")` potentially returned wrong value. (#1754)
This affects only when `maxAllowedPacket=0` is set.
* Bump filippo.io/edwards25519 from 1.1.1 to 1.2.0. (#1756)
While older versions have reported CVEs, they do not affect go-mysql.
* Update Go versions to 1.24-1.26. (#1763)
* Enhance interpolateParams to correctly handle placeholders. (#1732)
The question mark (?) within strings and comments will no longer be treated as a placeholder.
## v1.9.3 (2025-06-13)
* `tx.Commit()` and `tx.Rollback()` returned `ErrInvalidConn` always.
Now they return cached real error if present. (#1690)
* Optimize reading small result sets to fix a performance regression
introduced by compression protocol support. (`#1707`)
* Fix `db.Ping()` on compressed connection. (#1723)
## v1.9.2 (2025-04-07)
v1.9.2 is a re-release of v1.9.1 due to a release process issue; no changes were made to the content.
## v1.9.1 (2025-03-21)
### Major Changes
* Add Charset() option. (#1679)
### Bugfixes
* go.mod: fix go version format (#1682)
* Fix FormatDSN missing ConnectionAttributes (#1619)
## v1.9.0 (2025-02-18)
### Major Changes
- Implement zlib compression. (#1487)
- Supported Go version is updated to Go 1.21+. (#1639)
- Add support for VECTOR type introduced in MySQL 9.0. (#1609)
- Config object can have custom dial function. (#1527)
### Bugfixes
- Fix auth errors when username/password are too long. (#1625)
- Check if MySQL supports CLIENT_CONNECT_ATTRS before sending client attributes. (#1640)
- Fix auth switch request handling. (#1666)
### Other changes
- Add "filename:line" prefix to log in go-mysql. Custom loggers now show it. (#1589)
- Improve error handling. It reduces the "busy buffer" errors. (#1595, #1601, #1641)
- Use `strconv.Atoi` to parse max_allowed_packet. (#1661)
- `rejectReadOnly` option now handles ER_READ_ONLY_MODE (1290) error too. (#1660)
## 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
Server/vendor/github.com/go-sql-driver/mysql/LICENSE
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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.
Server/vendor/github.com/go-sql-driver/mysql/README.md
Generated Vendored
+598
View File
@@ -0,0 +1,598 @@
# Go-MySQL-Driver
[![DeepWiki](https://img.shields.io/badge/DeepWiki-go--sql--driver%2Fmysql-blue.svg?logo=data:image/png;base64,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)](https://deepwiki.com/go-sql-driver/mysql)
A MySQL-Driver for Go's [database/sql](https://golang.org/pkg/database/sql/) package
![Go-MySQL-Driver logo](https://raw.github.com/wiki/go-sql-driver/mysql/gomysql_m.png "Golang Gopher holding the MySQL Dolphin")
---------------------------------------
* [Features](#features)
* [Requirements](#requirements)
* [Installation](#installation)
* [Usage](#usage)
* [DSN (Data Source Name)](#dsn-data-source-name)
* [Password](#password)
* [Protocol](#protocol)
* [Address](#address)
* [Parameters](#parameters)
* [Examples](#examples)
* [Connection pool and timeouts](#connection-pool-and-timeouts)
* [context.Context Support](#contextcontext-support)
* [ColumnType Support](#columntype-support)
* [LOAD DATA LOCAL INFILE support](#load-data-local-infile-support)
* [time.Time support](#timetime-support)
* [Unicode support](#unicode-support)
* [Testing / Development](#testing--development)
* [License](#license)
---------------------------------------
## Features
* Lightweight and [fast](https://github.com/go-sql-driver/sql-benchmark "golang MySQL-Driver performance")
* Native Go implementation. No C-bindings, just pure Go
* Connections over TCP/IPv4, TCP/IPv6, Unix domain sockets or [custom protocols](https://godoc.org/github.com/go-sql-driver/mysql#DialFunc)
* Automatic handling of broken connections
* Automatic Connection Pooling *(by database/sql package)*
* Supports queries larger than 16MB
* Full [`sql.RawBytes`](https://golang.org/pkg/database/sql/#RawBytes) support.
* Intelligent `LONG DATA` handling in prepared statements
* Secure `LOAD DATA LOCAL INFILE` support with file allowlisting and `io.Reader` support
* Optional `time.Time` parsing
* Optional placeholder interpolation
* Supports zlib compression.
## Requirements
* Go 1.24 or higher. We aim to support the 3 latest versions of Go.
* MySQL (5.7+) and MariaDB (10.5+) are supported by maintainers.
* [TiDB](https://github.com/pingcap/tidb) is supported by PingCAP.
* Do not ask questions about TiDB in our issue tracker or forum.
* [Document](https://docs.pingcap.com/tidb/v6.1/dev-guide-sample-application-golang)
* [Forum](https://ask.pingcap.com/)
* go-mysql would work with Percona Server, Google CloudSQL or Sphinx (2.2.3+).
* Maintainers won't support them. Do not expect issues are investigated and resolved by maintainers.
* Investigate issues yourself and please send a pull request to fix it.
---------------------------------------
## Installation
Simple install the package to your [$GOPATH](https://github.com/golang/go/wiki/GOPATH "GOPATH") with the [go tool](https://golang.org/cmd/go/ "go command") from shell:
```bash
go get -u github.com/go-sql-driver/mysql
```
Make sure [Git is installed](https://git-scm.com/downloads) on your machine and in your system's `PATH`.
## Usage
_Go MySQL Driver_ is an implementation of Go's `database/sql/driver` interface. You only need to import the driver and can use the full [`database/sql`](https://golang.org/pkg/database/sql/) API then.
Use `mysql` as `driverName` and a valid [DSN](#dsn-data-source-name) as `dataSourceName`:
```go
import (
"database/sql"
"time"
_ "github.com/go-sql-driver/mysql"
)
// ...
db, err := sql.Open("mysql", "user:password@/dbname")
if err != nil {
panic(err)
}
// See "Important settings" section.
db.SetConnMaxLifetime(time.Minute * 3)
db.SetMaxOpenConns(10)
db.SetMaxIdleConns(10)
```
[Examples are available in our Wiki](https://github.com/go-sql-driver/mysql/wiki/Examples "Go-MySQL-Driver Examples").
### Important settings
`db.SetConnMaxLifetime()` is required to ensure connections are closed by the driver safely before connection is closed by MySQL server, OS, or other middlewares. Since some middlewares close idle connections by 5 minutes, we recommend timeout shorter than 5 minutes. This setting helps load balancing and changing system variables too.
`db.SetMaxOpenConns()` is highly recommended to limit the number of connection used by the application. There is no recommended limit number because it depends on application and MySQL server.
`db.SetMaxIdleConns()` is recommended to be set same to `db.SetMaxOpenConns()`. When it is smaller than `SetMaxOpenConns()`, connections can be opened and closed much more frequently than you expect. Idle connections can be closed by the `db.SetConnMaxLifetime()`. If you want to close idle connections more rapidly, you can use `db.SetConnMaxIdleTime()` since Go 1.15.
### DSN (Data Source Name)
The Data Source Name has a common format, like e.g. [PEAR DB](http://pear.php.net/manual/en/package.database.db.intro-dsn.php) uses it, but without type-prefix (optional parts marked by squared brackets):
```
[username[:password]@][protocol[(address)]]/dbname[?param1=value1&...&paramN=valueN]
```
A DSN in its fullest form:
```
username:password@protocol(address)/dbname?param=value
```
Except for the databasename, all values are optional. So the minimal DSN is:
```
/dbname
```
If you do not want to preselect a database, leave `dbname` empty:
```
/
```
This has the same effect as an empty DSN string:
```
```
`dbname` is escaped by [PathEscape()](https://pkg.go.dev/net/url#PathEscape) since v1.8.0. If your database name is `dbname/withslash`, it becomes:
```
/dbname%2Fwithslash
```
Alternatively, [Config.FormatDSN](https://godoc.org/github.com/go-sql-driver/mysql#Config.FormatDSN) can be used to create a DSN string by filling a struct.
#### Password
Passwords can consist of any character. Escaping is **not** necessary.
#### Protocol
See [net.Dial](https://golang.org/pkg/net/#Dial) for more information which networks are available.
In general you should use a Unix domain socket if available and TCP otherwise for best performance.
#### Address
For TCP and UDP networks, addresses have the form `host[:port]`.
If `port` is omitted, the default port will be used.
If `host` is a literal IPv6 address, it must be enclosed in square brackets.
The functions [net.JoinHostPort](https://golang.org/pkg/net/#JoinHostPort) and [net.SplitHostPort](https://golang.org/pkg/net/#SplitHostPort) manipulate addresses in this form.
For Unix domain sockets the address is the absolute path to the MySQL-Server-socket, e.g. `/var/run/mysqld/mysqld.sock` or `/tmp/mysql.sock`.
#### Parameters
*Parameters are case-sensitive!*
Notice that any of `true`, `TRUE`, `True` or `1` is accepted to stand for a true boolean value. Not surprisingly, false can be specified as any of: `false`, `FALSE`, `False` or `0`.
##### `allowAllFiles`
```
Type: bool
Valid Values: true, false
Default: false
```
`allowAllFiles=true` disables the file allowlist for `LOAD DATA LOCAL INFILE` and allows *all* files.
[*Might be insecure!*](https://dev.mysql.com/doc/refman/8.0/en/load-data.html#load-data-local)
##### `allowCleartextPasswords`
```
Type: bool
Valid Values: true, false
Default: false
```
`allowCleartextPasswords=true` allows using the [cleartext client side plugin](https://dev.mysql.com/doc/en/cleartext-pluggable-authentication.html) if required by an account, such as one defined with the [PAM authentication plugin](http://dev.mysql.com/doc/en/pam-authentication-plugin.html). Sending passwords in clear text may be a security problem in some configurations. To avoid problems if there is any possibility that the password would be intercepted, clients should connect to MySQL Server using a method that protects the password. Possibilities include [TLS / SSL](#tls), IPsec, or a private network.
##### `allowFallbackToPlaintext`
```
Type: bool
Valid Values: true, false
Default: false
```
`allowFallbackToPlaintext=true` acts like a `--ssl-mode=PREFERRED` MySQL client as described in [Command Options for Connecting to the Server](https://dev.mysql.com/doc/refman/5.7/en/connection-options.html#option_general_ssl-mode)
##### `allowNativePasswords`
```
Type: bool
Valid Values: true, false
Default: true
```
`allowNativePasswords=false` disallows the usage of MySQL native password method.
##### `allowOldPasswords`
```
Type: bool
Valid Values: true, false
Default: false
```
`allowOldPasswords=true` allows the usage of the insecure old password method. This should be avoided, but is necessary in some cases. See also [the old_passwords wiki page](https://github.com/go-sql-driver/mysql/wiki/old_passwords).
##### `charset`
```
Type: string
Valid Values: <name>
Default: none
```
Sets the charset used for client-server interaction (`"SET NAMES <value>"`). If multiple charsets are set (separated by a comma), the following charset is used if setting the charset fails. This enables for example support for `utf8mb4` ([introduced in MySQL 5.5.3](http://dev.mysql.com/doc/refman/5.5/en/charset-unicode-utf8mb4.html)) with fallback to `utf8` for older servers (`charset=utf8mb4,utf8`).
See also [Unicode Support](#unicode-support).
##### `checkConnLiveness`
```
Type: bool
Valid Values: true, false
Default: true
```
On supported platforms connections retrieved from the connection pool are checked for liveness before using them. If the check fails, the respective connection is marked as bad and the query retried with another connection.
`checkConnLiveness=false` disables this liveness check of connections.
##### `collation`
```
Type: string
Valid Values: <name>
Default: utf8mb4_general_ci
```
Sets the collation used for client-server interaction on connection. In contrast to `charset`, `collation` does not issue additional queries. If the specified collation is unavailable on the target server, the connection will fail.
A list of valid charsets for a server is retrievable with `SHOW COLLATION`.
The default collation (`utf8mb4_general_ci`) is supported from MySQL 5.5. You should use an older collation (e.g. `utf8_general_ci`) for older MySQL.
Collations for charset "ucs2", "utf16", "utf16le", and "utf32" can not be used ([ref](https://dev.mysql.com/doc/refman/5.7/en/charset-connection.html#charset-connection-impermissible-client-charset)).
See also [Unicode Support](#unicode-support).
##### `clientFoundRows`
```
Type: bool
Valid Values: true, false
Default: false
```
`clientFoundRows=true` causes an UPDATE to return the number of matching rows instead of the number of rows changed.
##### `columnsWithAlias`
```
Type: bool
Valid Values: true, false
Default: false
```
When `columnsWithAlias` is true, calls to `sql.Rows.Columns()` will return the table alias and the column name separated by a dot. For example:
```
SELECT u.id FROM users as u
```
will return `u.id` instead of just `id` if `columnsWithAlias=true`.
##### `compress`
```
Type: bool
Valid Values: true, false
Default: false
```
Toggles zlib compression. false by default.
##### `interpolateParams`
```
Type: bool
Valid Values: true, false
Default: false
```
If `interpolateParams` is true, placeholders (`?`) in calls to `db.Query()` and `db.Exec()` are interpolated into a single query string with given parameters. This reduces the number of roundtrips, since the driver has to prepare a statement, execute it with given parameters and close the statement again with `interpolateParams=false`.
*This can not be used together with the multibyte encodings BIG5, CP932, GB2312, GBK or SJIS. These are rejected as they may [introduce a SQL injection vulnerability](http://stackoverflow.com/a/12118602/3430118)!*
##### `loc`
```
Type: string
Valid Values: <escaped name>
Default: UTC
```
Sets the location for time.Time values (when using `parseTime=true`). *"Local"* sets the system's location. See [time.LoadLocation](https://golang.org/pkg/time/#LoadLocation) for details.
Note that this sets the location for time.Time values but does not change MySQL's [time_zone setting](https://dev.mysql.com/doc/refman/5.5/en/time-zone-support.html). For that see the [time_zone system variable](#system-variables), which can also be set as a DSN parameter.
Please keep in mind, that param values must be [url.QueryEscape](https://golang.org/pkg/net/url/#QueryEscape)'ed. Alternatively you can manually replace the `/` with `%2F`. For example `US/Pacific` would be `loc=US%2FPacific`.
##### `timeTruncate`
```
Type: duration
Default: 0
```
[Truncate time values](https://pkg.go.dev/time#Duration.Truncate) to the specified duration. The value must be a decimal number with a unit suffix (*"ms"*, *"s"*, *"m"*, *"h"*), such as *"30s"*, *"0.5m"* or *"1m30s"*.
##### `maxAllowedPacket`
```
Type: decimal number
Default: 64*1024*1024
```
Max packet size allowed in bytes. The default value is 64 MiB and should be adjusted to match the server settings. `maxAllowedPacket=0` can be used to automatically fetch the `max_allowed_packet` variable from server *on every connection*.
##### `multiStatements`
```
Type: bool
Valid Values: true, false
Default: false
```
Allow multiple statements in one query. This can be used to bach multiple queries. Use [Rows.NextResultSet()](https://pkg.go.dev/database/sql#Rows.NextResultSet) to get result of the second and subsequent queries.
When `multiStatements` is used, `?` parameters must only be used in the first statement. [interpolateParams](#interpolateparams) can be used to avoid this limitation unless prepared statement is used explicitly.
It's possible to access the last inserted ID and number of affected rows for multiple statements by using `sql.Conn.Raw()` and the `mysql.Result`. For example:
```go
conn, _ := db.Conn(ctx)
conn.Raw(func(conn any) error {
ex := conn.(driver.Execer)
res, err := ex.Exec(`
UPDATE point SET x = 1 WHERE y = 2;
UPDATE point SET x = 2 WHERE y = 3;
`, nil)
// Both slices have 2 elements.
log.Print(res.(mysql.Result).AllRowsAffected())
log.Print(res.(mysql.Result).AllLastInsertIds())
})
```
##### `parseTime`
```
Type: bool
Valid Values: true, false
Default: false
```
`parseTime=true` changes the output type of `DATE` and `DATETIME` values to `time.Time` instead of `[]byte` / `string`
The date or datetime like `0000-00-00 00:00:00` is converted into zero value of `time.Time`.
##### `readTimeout`
```
Type: duration
Default: 0
```
I/O read timeout. The value must be a decimal number with a unit suffix (*"ms"*, *"s"*, *"m"*, *"h"*), such as *"30s"*, *"0.5m"* or *"1m30s"*.
##### `rejectReadOnly`
```
Type: bool
Valid Values: true, false
Default: false
```
`rejectReadOnly=true` causes the driver to reject read-only connections. This
is for a possible race condition during an automatic failover, where the mysql
client gets connected to a read-only replica after the failover.
Note that this should be a fairly rare case, as an automatic failover normally
happens when the primary is down, and the race condition shouldn't happen
unless it comes back up online as soon as the failover is kicked off. On the
other hand, when this happens, a MySQL application can get stuck on a
read-only connection until restarted. It is however fairly easy to reproduce,
for example, using a manual failover on AWS Aurora's MySQL-compatible cluster.
If you are not relying on read-only transactions to reject writes that aren't
supposed to happen, setting this on some MySQL providers (such as AWS Aurora)
is safer for failovers.
Note that ERROR 1290 can be returned for a `read-only` server and this option will
cause a retry for that error. However the same error number is used for some
other cases. You should ensure your application will never cause an ERROR 1290
except for `read-only` mode when enabling this option.
##### `serverPubKey`
```
Type: string
Valid Values: <name>
Default: none
```
Server public keys can be registered with [`mysql.RegisterServerPubKey`](https://godoc.org/github.com/go-sql-driver/mysql#RegisterServerPubKey), which can then be used by the assigned name in the DSN.
Public keys are used to transmit encrypted data, e.g. for authentication.
If the server's public key is known, it should be set manually to avoid expensive and potentially insecure transmissions of the public key from the server to the client each time it is required.
##### `timeout`
```
Type: duration
Default: OS default
```
Timeout for establishing connections, aka dial timeout. The value must be a decimal number with a unit suffix (*"ms"*, *"s"*, *"m"*, *"h"*), such as *"30s"*, *"0.5m"* or *"1m30s"*.
##### `tls`
```
Type: bool / string
Valid Values: true, false, skip-verify, preferred, <name>
Default: false
```
`tls=true` enables TLS / SSL encrypted connection to the server. Use `skip-verify` if you want to use a self-signed or invalid certificate (server side) or use `preferred` to use TLS only when advertised by the server. This is similar to `skip-verify`, but additionally allows a fallback to a connection which is not encrypted. Neither `skip-verify` nor `preferred` add any reliable security. You can use a custom TLS config after registering it with [`mysql.RegisterTLSConfig`](https://godoc.org/github.com/go-sql-driver/mysql#RegisterTLSConfig).
##### `writeTimeout`
```
Type: duration
Default: 0
```
I/O write timeout. The value must be a decimal number with a unit suffix (*"ms"*, *"s"*, *"m"*, *"h"*), such as *"30s"*, *"0.5m"* or *"1m30s"*.
##### `connectionAttributes`
```
Type: comma-delimited string of user-defined "key:value" pairs
Valid Values: (<name1>:<value1>,<name2>:<value2>,...)
Default: none
```
[Connection attributes](https://dev.mysql.com/doc/refman/8.0/en/performance-schema-connection-attribute-tables.html) are key-value pairs that application programs can pass to the server at connect time.
##### System Variables
Any other parameters are interpreted as system variables:
* `<boolean_var>=<value>`: `SET <boolean_var>=<value>`
* `<enum_var>=<value>`: `SET <enum_var>=<value>`
* `<string_var>=%27<value>%27`: `SET <string_var>='<value>'`
Rules:
* The values for string variables must be quoted with `'`.
* The values must also be [url.QueryEscape](http://golang.org/pkg/net/url/#QueryEscape)'ed!
(which implies values of string variables must be wrapped with `%27`).
Examples:
* `autocommit=1`: `SET autocommit=1`
* [`time_zone=%27Europe%2FParis%27`](https://dev.mysql.com/doc/refman/5.5/en/time-zone-support.html): `SET time_zone='Europe/Paris'`
* [`transaction_isolation=%27REPEATABLE-READ%27`](https://dev.mysql.com/doc/refman/5.7/en/server-system-variables.html#sysvar_transaction_isolation): `SET transaction_isolation='REPEATABLE-READ'`
#### Examples
```
user@unix(/path/to/socket)/dbname
```
```
root:pw@unix(/tmp/mysql.sock)/myDatabase?loc=Local
```
```
user:password@tcp(localhost:5555)/dbname?tls=skip-verify&autocommit=true
```
Treat warnings as errors by setting the system variable [`sql_mode`](https://dev.mysql.com/doc/refman/5.7/en/sql-mode.html):
```
user:password@/dbname?sql_mode=TRADITIONAL
```
TCP via IPv6:
```
user:password@tcp([de:ad:be:ef::ca:fe]:80)/dbname?timeout=90s&collation=utf8mb4_unicode_ci
```
TCP on a remote host, e.g. Amazon RDS:
```
id:password@tcp(your-amazonaws-uri.com:3306)/dbname
```
Google Cloud SQL on App Engine:
```
user:password@unix(/cloudsql/project-id:region-name:instance-name)/dbname
```
TCP using default port (3306) on localhost:
```
user:password@tcp/dbname?charset=utf8mb4,utf8&sys_var=esc%40ped
```
Use the default protocol (tcp) and host (localhost:3306):
```
user:password@/dbname
```
No Database preselected:
```
user:password@/
```
### Connection pool and timeouts
The connection pool is managed by Go's database/sql package. For details on how to configure the size of the pool and how long connections stay in the pool see `*DB.SetMaxOpenConns`, `*DB.SetMaxIdleConns`, and `*DB.SetConnMaxLifetime` in the [database/sql documentation](https://golang.org/pkg/database/sql/). The read, write, and dial timeouts for each individual connection are configured with the DSN parameters [`readTimeout`](#readtimeout), [`writeTimeout`](#writetimeout), and [`timeout`](#timeout), respectively.
## `ColumnType` Support
This driver supports the [`ColumnType` interface](https://golang.org/pkg/database/sql/#ColumnType) introduced in Go 1.8, with the exception of [`ColumnType.Length()`](https://golang.org/pkg/database/sql/#ColumnType.Length), which is currently not supported. All Unsigned database type names will be returned `UNSIGNED ` with `INT`, `TINYINT`, `SMALLINT`, `MEDIUMINT`, `BIGINT`.
## `context.Context` Support
Go 1.8 added `database/sql` support for `context.Context`. This driver supports query timeouts and cancellation via contexts.
See [context support in the database/sql package](https://golang.org/doc/go1.8#database_sql) for more details.
> [!IMPORTANT]
> The `QueryContext`, `ExecContext`, etc. variants provided by `database/sql` will cause the connection to be closed if the provided context is cancelled or timed out before the result is received by the driver.
### `LOAD DATA LOCAL INFILE` support
For this feature you need direct access to the package. Therefore you must change the import path (no `_`):
```go
import "github.com/go-sql-driver/mysql"
```
Files must be explicitly allowed by registering them with `mysql.RegisterLocalFile(filepath)` (recommended) or the allowlist check must be deactivated by using the DSN parameter `allowAllFiles=true` ([*Might be insecure!*](https://dev.mysql.com/doc/refman/8.0/en/load-data.html#load-data-local)).
To use a `io.Reader` a handler function must be registered with `mysql.RegisterReaderHandler(name, handler)` which returns a `io.Reader` or `io.ReadCloser`. The Reader is available with the filepath `Reader::<name>` then. Choose different names for different handlers and `DeregisterReaderHandler` when you don't need it anymore.
See the [godoc of Go-MySQL-Driver](https://godoc.org/github.com/go-sql-driver/mysql "golang mysql driver documentation") for details.
### `time.Time` support
The default internal output type of MySQL `DATE` and `DATETIME` values is `[]byte` which allows you to scan the value into a `[]byte`, `string` or `sql.RawBytes` variable in your program.
However, many want to scan MySQL `DATE` and `DATETIME` values into `time.Time` variables, which is the logical equivalent in Go to `DATE` and `DATETIME` in MySQL. You can do that by changing the internal output type from `[]byte` to `time.Time` with the DSN parameter `parseTime=true`. You can set the default [`time.Time` location](https://golang.org/pkg/time/#Location) with the `loc` DSN parameter.
**Caution:** As of Go 1.1, this makes `time.Time` the only variable type you can scan `DATE` and `DATETIME` values into. This breaks for example [`sql.RawBytes` support](https://github.com/go-sql-driver/mysql/wiki/Examples#rawbytes).
### Unicode support
Since version 1.5 Go-MySQL-Driver automatically uses the collation ` utf8mb4_general_ci` by default.
Other charsets / collations can be set using the [`charset`](#charset) or [`collation`](#collation) DSN parameter.
- When only the `charset` is specified, the `SET NAMES <charset>` query is sent and the server's default collation is used.
- When both the `charset` and `collation` are specified, the `SET NAMES <charset> COLLATE <collation>` query is sent.
- When only the `collation` is specified, the collation is specified in the protocol handshake and the `SET NAMES` query is not sent. This can save one roundtrip, but note that the server may ignore the specified collation silently and use the server's default charset/collation instead.
See http://dev.mysql.com/doc/refman/8.0/en/charset-unicode.html for more details on MySQL's Unicode support.
## Testing / Development
To run the driver tests you may need to adjust the configuration. See the [Testing Wiki-Page](https://github.com/go-sql-driver/mysql/wiki/Testing "Testing") for details.
Go-MySQL-Driver is not feature-complete yet. Your help is very appreciated.
If you want to contribute, you can work on an [open issue](https://github.com/go-sql-driver/mysql/issues?state=open) or review a [pull request](https://github.com/go-sql-driver/mysql/pulls).
See the [Contribution Guidelines](https://github.com/go-sql-driver/mysql/blob/master/.github/CONTRIBUTING.md) for details.
---------------------------------------
## License
Go-MySQL-Driver is licensed under the [Mozilla Public License Version 2.0](https://raw.github.com/go-sql-driver/mysql/master/LICENSE)
Mozilla summarizes the license scope as follows:
> MPL: The copyleft applies to any files containing MPLed code.
That means:
* You can **use** the **unchanged** source code both in private and commercially.
* When distributing, you **must publish** the source code of any **changed files** licensed under the MPL 2.0 under a) the MPL 2.0 itself or b) a compatible license (e.g. GPL 3.0 or Apache License 2.0).
* You **needn't publish** the source code of your library as long as the files licensed under the MPL 2.0 are **unchanged**.
Please read the [MPL 2.0 FAQ](https://www.mozilla.org/en-US/MPL/2.0/FAQ/) if you have further questions regarding the license.
You can read the full terms here: [LICENSE](https://raw.github.com/go-sql-driver/mysql/master/LICENSE).
![Go Gopher and MySQL Dolphin](https://raw.github.com/wiki/go-sql-driver/mysql/go-mysql-driver_m.jpg "Golang Gopher transporting the MySQL Dolphin in a wheelbarrow")
Server/vendor/github.com/go-sql-driver/mysql/auth.go
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// 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/dev/mysql-server/8.4.5/page_protocol_connection_phase_authentication_methods_native_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
}
Server/vendor/github.com/go-sql-driver/mysql/buffer.go
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// 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"
)
const defaultBufSize = 4096
const maxCachedBufSize = 256 * 1024
// readerFunc is a function that compatible with io.Reader.
// We use this function type instead of io.Reader because we want to
// just pass mc.readWithTimeout.
type readerFunc func([]byte) (int, error)
// 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.
type buffer struct {
buf []byte // read buffer.
cachedBuf []byte // buffer that will be reused. len(cachedBuf) <= maxCachedBufSize.
}
// newBuffer allocates and returns a new buffer.
func newBuffer() buffer {
return buffer{
cachedBuf: make([]byte, defaultBufSize),
}
}
// busy returns true if the read buffer is not empty.
func (b *buffer) busy() bool {
return len(b.buf) > 0
}
// len returns how many bytes in the read buffer.
func (b *buffer) len() int {
return len(b.buf)
}
// fill reads into the read buffer until at least _need_ bytes are in it.
func (b *buffer) fill(need int, r readerFunc) error {
// we'll move the contents of the current buffer to dest before filling it.
dest := b.cachedBuf
// 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.cachedBuf = dest
}
}
// move the existing data to the start of the buffer.
n := len(b.buf)
copy(dest[:n], b.buf)
for {
nn, err := r(dest[n:])
n += nn
if err == nil && n < need {
continue
}
b.buf = dest[:n]
if err == io.EOF {
if n < need {
err = io.ErrUnexpectedEOF
} else {
err = nil
}
}
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 {
data := b.buf[:need:need]
b.buf = b.buf[need:]
return data
}
// 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.busy() {
return nil, ErrBusyBuffer
}
// test (cheap) general case first
if length <= len(b.cachedBuf) {
return b.cachedBuf[:length], nil
}
if length < maxCachedBufSize {
b.cachedBuf = make([]byte, length)
return b.cachedBuf, 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.busy() {
return nil, ErrBusyBuffer
}
return b.cachedBuf[: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.busy() {
return nil, ErrBusyBuffer
}
return b.cachedBuf, nil
}
// store stores buf, an updated buffer, if its suitable to do so.
func (b *buffer) store(buf []byte) {
if cap(buf) <= maxCachedBufSize && cap(buf) > cap(b.cachedBuf) {
b.cachedBuf = buf[:cap(buf)]
}
}
Server/vendor/github.com/go-sql-driver/mysql/collations.go
Generated Vendored
+266
View File
@@ -0,0 +1,266 @@
// 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 defaultCollationID = 45 // 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,
}
Server/vendor/github.com/go-sql-driver/mysql/compress.go
Generated Vendored
+213
View File
@@ -0,0 +1,213 @@
// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
//
// Copyright 2024 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"
"compress/zlib"
"fmt"
"io"
"sync"
)
var (
zrPool *sync.Pool // Do not use directly. Use zDecompress() instead.
zwPool *sync.Pool // Do not use directly. Use zCompress() instead.
)
func init() {
zrPool = &sync.Pool{
New: func() any { return nil },
}
zwPool = &sync.Pool{
New: func() any {
zw, err := zlib.NewWriterLevel(new(bytes.Buffer), 2)
if err != nil {
panic(err) // compress/zlib return non-nil error only if level is invalid
}
return zw
},
}
}
func zDecompress(src []byte, dst *bytes.Buffer) (int, error) {
br := bytes.NewReader(src)
var zr io.ReadCloser
var err error
if a := zrPool.Get(); a == nil {
if zr, err = zlib.NewReader(br); err != nil {
return 0, err
}
} else {
zr = a.(io.ReadCloser)
if err := zr.(zlib.Resetter).Reset(br, nil); err != nil {
return 0, err
}
}
n, _ := dst.ReadFrom(zr) // ignore err because zr.Close() will return it again.
err = zr.Close() // zr.Close() may return chuecksum error.
zrPool.Put(zr)
return int(n), err
}
func zCompress(src []byte, dst io.Writer) error {
zw := zwPool.Get().(*zlib.Writer)
zw.Reset(dst)
if _, err := zw.Write(src); err != nil {
return err
}
err := zw.Close()
zwPool.Put(zw)
return err
}
type compIO struct {
mc *mysqlConn
buff bytes.Buffer
}
func newCompIO(mc *mysqlConn) *compIO {
return &compIO{
mc: mc,
}
}
func (c *compIO) reset() {
c.buff.Reset()
}
func (c *compIO) readNext(need int) ([]byte, error) {
for c.buff.Len() < need {
if err := c.readCompressedPacket(); err != nil {
return nil, err
}
}
data := c.buff.Next(need)
return data[:need:need], nil // prevent caller writes into c.buff
}
func (c *compIO) readCompressedPacket() error {
header, err := c.mc.readNext(7)
if err != nil {
return err
}
_ = header[6] // bounds check hint to compiler; guaranteed by readNext
// compressed header structure
comprLength := getUint24(header[0:3])
compressionSequence := header[3]
uncompressedLength := getUint24(header[4:7])
if debug {
fmt.Printf("uncompress cmplen=%v uncomplen=%v pkt_cmp_seq=%v expected_cmp_seq=%v\n",
comprLength, uncompressedLength, compressionSequence, c.mc.sequence)
}
// Do not return ErrPktSync here.
// Server may return error packet (e.g. 1153 Got a packet bigger than 'max_allowed_packet' bytes)
// before receiving all packets from client. In this case, seqnr is younger than expected.
// NOTE: Both of mariadbclient and mysqlclient do not check seqnr. Only server checks it.
if debug && compressionSequence != c.mc.compressSequence {
fmt.Printf("WARN: unexpected cmpress seq nr: expected %v, got %v",
c.mc.compressSequence, compressionSequence)
}
c.mc.compressSequence = compressionSequence + 1
comprData, err := c.mc.readNext(comprLength)
if err != nil {
return err
}
// if payload is uncompressed, its length will be specified as zero, and its
// true length is contained in comprLength
if uncompressedLength == 0 {
c.buff.Write(comprData)
return nil
}
// use existing capacity in bytesBuf if possible
c.buff.Grow(uncompressedLength)
nread, err := zDecompress(comprData, &c.buff)
if err != nil {
return err
}
if nread != uncompressedLength {
return fmt.Errorf("invalid compressed packet: uncompressed length in header is %d, actual %d",
uncompressedLength, nread)
}
return nil
}
const minCompressLength = 150
const maxPayloadLen = maxPacketSize - 4
// writePackets sends one or some packets with compression.
// Use this instead of mc.netConn.Write() when mc.compress is true.
func (c *compIO) writePackets(packets []byte) (int, error) {
totalBytes := len(packets)
blankHeader := make([]byte, 7)
buf := &c.buff
for len(packets) > 0 {
payloadLen := min(maxPayloadLen, len(packets))
payload := packets[:payloadLen]
uncompressedLen := payloadLen
buf.Reset()
buf.Write(blankHeader) // Buffer.Write() never returns error
// If payload is less than minCompressLength, don't compress.
if uncompressedLen < minCompressLength {
buf.Write(payload)
uncompressedLen = 0
} else {
err := zCompress(payload, buf)
if debug && err != nil {
fmt.Printf("zCompress error: %v", err)
}
// do not compress if compressed data is larger than uncompressed data
// I intentionally miss 7 byte header in the buf; zCompress must compress more than 7 bytes.
if err != nil || buf.Len() >= uncompressedLen {
buf.Reset()
buf.Write(blankHeader)
buf.Write(payload)
uncompressedLen = 0
}
}
if n, err := c.writeCompressedPacket(buf.Bytes(), uncompressedLen); err != nil {
// To allow returning ErrBadConn when sending really 0 bytes, we sum
// up compressed bytes that is returned by underlying Write().
return totalBytes - len(packets) + n, err
}
packets = packets[payloadLen:]
}
return totalBytes, nil
}
// writeCompressedPacket writes a compressed packet with header.
// data should start with 7 size space for header followed by payload.
func (c *compIO) writeCompressedPacket(data []byte, uncompressedLen int) (int, error) {
mc := c.mc
comprLength := len(data) - 7
if debug {
fmt.Printf(
"writeCompressedPacket: comprLength=%v, uncompressedLen=%v, seq=%v\n",
comprLength, uncompressedLen, mc.compressSequence)
}
// compression header
putUint24(data[0:3], comprLength)
data[3] = mc.compressSequence
putUint24(data[4:7], uncompressedLen)
mc.compressSequence++
return mc.writeWithTimeout(data)
}
Server/vendor/github.com/go-sql-driver/mysql/conncheck.go
Generated Vendored
+54
View File
@@ -0,0 +1,54 @@
// 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
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
}
Server/vendor/github.com/go-sql-driver/mysql/conncheck_dummy.go
Generated Vendored
+17
View File
@@ -0,0 +1,17 @@
// 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
package mysql
import "net"
func connCheck(conn net.Conn) error {
return nil
}
Server/vendor/github.com/go-sql-driver/mysql/connection.go
Generated Vendored
+816
View File
@@ -0,0 +1,816 @@
// 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"
"fmt"
"io"
"net"
"runtime"
"strconv"
"strings"
"sync/atomic"
"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().
compIO *compIO
cfg *Config
connector *connector
maxAllowedPacket int
maxWriteSize int
capabilities capabilityFlag
extCapabilities extendedCapabilityFlag
status statusFlag
sequence uint8
compressSequence uint8
parseTime bool
compress 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 atomic.Bool // set when conn is closed, before closech is closed
}
// Helper function to call per-connection logger.
func (mc *mysqlConn) log(v ...any) {
_, filename, lineno, ok := runtime.Caller(1)
if ok {
pos := strings.LastIndexByte(filename, '/')
if pos != -1 {
filename = filename[pos+1:]
}
prefix := fmt.Sprintf("%s:%d ", filename, lineno)
v = append([]any{prefix}, v...)
}
mc.cfg.Logger.Print(v...)
}
func (mc *mysqlConn) readWithTimeout(b []byte) (int, error) {
to := mc.cfg.ReadTimeout
if to > 0 {
if err := mc.netConn.SetReadDeadline(time.Now().Add(to)); err != nil {
return 0, err
}
}
return mc.netConn.Read(b)
}
func (mc *mysqlConn) writeWithTimeout(b []byte) (int, error) {
to := mc.cfg.WriteTimeout
if to > 0 {
if err := mc.netConn.SetWriteDeadline(time.Now().Add(to)); err != nil {
return 0, err
}
}
return mc.netConn.Write(b)
}
func (mc *mysqlConn) resetSequence() {
mc.sequence = 0
mc.compressSequence = 0
}
// syncSequence must be called when finished writing some packet and before start reading.
func (mc *mysqlConn) syncSequence() {
// Syncs compressionSequence to sequence.
// This is not documented but done in `net_flush()` in MySQL and MariaDB.
// https://github.com/mariadb-corporation/mariadb-connector-c/blob/8228164f850b12353da24df1b93a1e53cc5e85e9/libmariadb/ma_net.c#L170-L171
// https://github.com/mysql/mysql-server/blob/824e2b4064053f7daf17d7f3f84b7a3ed92e5fb4/sql-common/net_serv.cc#L293
if mc.compress {
mc.sequence = mc.compressSequence
mc.compIO.reset()
}
}
// 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 {
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())
}
return
}
// markBadConn replaces errBadConnNoWrite with driver.ErrBadConn.
// This function is used to return driver.ErrBadConn only when safe to retry.
func (mc *mysqlConn) markBadConn(err error) error {
if err == errBadConnNoWrite {
return driver.ErrBadConn
}
return err
}
func (mc *mysqlConn) Begin() (driver.Tx, error) {
return mc.begin(false)
}
func (mc *mysqlConn) begin(readOnly bool) (driver.Tx, error) {
if mc.closed.Load() {
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.close()
return
}
// close closes the network connection and clear results without sending COM_QUIT.
func (mc *mysqlConn) close() {
mc.cleanup()
mc.clearResult()
}
// Closes the network connection and unsets internal variables. Do not call this
// function after successful 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("closing connection:", 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() {
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.skipColumns(stmt.paramCount); err != nil {
return nil, err
}
}
if columnCount > 0 {
if mc.extCapabilities&clientCacheMetadata != 0 {
if stmt.columns, err = mc.readColumns(int(columnCount), nil); err != nil {
return nil, err
}
} else {
if err = mc.skipColumns(int(columnCount)); err != nil {
return nil, err
}
}
}
}
return stmt, err
}
func (mc *mysqlConn) interpolateParams(query string, args []driver.Value) (string, error) {
noBackslashEscapes := (mc.status & statusNoBackslashEscapes) != 0
const (
stateNormal = iota
stateString
stateEscape
stateEOLComment
stateSlashStarComment
stateBacktick
)
const (
QUOTE_BYTE = byte('\'')
DBL_QUOTE_BYTE = byte('"')
BACKSLASH_BYTE = byte('\\')
QUESTION_MARK_BYTE = byte('?')
SLASH_BYTE = byte('/')
STAR_BYTE = byte('*')
HASH_BYTE = byte('#')
MINUS_BYTE = byte('-')
LINE_FEED_BYTE = byte('\n')
BACKTICK_BYTE = byte('`')
)
buf, err := mc.buf.takeCompleteBuffer()
if err != nil {
mc.cleanup()
return "", driver.ErrBadConn
}
buf = buf[:0]
state := stateNormal
singleQuotes := false
lastChar := byte(0)
argPos := 0
lenQuery := len(query)
lastIdx := 0
for i := range lenQuery {
currentChar := query[i]
if state == stateEscape && !((currentChar == QUOTE_BYTE && singleQuotes) || (currentChar == DBL_QUOTE_BYTE && !singleQuotes)) {
state = stateString
lastChar = currentChar
continue
}
switch currentChar {
case STAR_BYTE:
if state == stateNormal && lastChar == SLASH_BYTE {
state = stateSlashStarComment
}
case SLASH_BYTE:
if state == stateSlashStarComment && lastChar == STAR_BYTE {
state = stateNormal
// Clear lastChar so the '/' that closed the comment isn't
// reused to start a new comment with a following '*'.
lastChar = 0
continue
}
case HASH_BYTE:
if state == stateNormal {
state = stateEOLComment
}
case MINUS_BYTE:
if state == stateNormal && lastChar == MINUS_BYTE {
// -- only starts a comment if followed by whitespace or control char
if i+1 < lenQuery {
nextChar := query[i+1]
if nextChar == ' ' || nextChar == '\t' || nextChar == '\n' || nextChar == '\r' {
state = stateEOLComment
}
} else {
state = stateEOLComment
}
}
case LINE_FEED_BYTE:
if state == stateEOLComment {
state = stateNormal
}
case DBL_QUOTE_BYTE:
if state == stateNormal {
state = stateString
singleQuotes = false
} else if state == stateString && !singleQuotes {
state = stateNormal
} else if state == stateEscape {
state = stateString
}
case QUOTE_BYTE:
if state == stateNormal {
state = stateString
singleQuotes = true
} else if state == stateString && singleQuotes {
state = stateNormal
} else if state == stateEscape {
state = stateString
}
case BACKSLASH_BYTE:
if state == stateString && !noBackslashEscapes {
state = stateEscape
}
case QUESTION_MARK_BYTE:
if state == stateNormal {
if argPos >= len(args) {
return "", driver.ErrSkip
}
buf = append(buf, query[lastIdx:i]...)
arg := args[argPos]
argPos++
if arg == nil {
buf = append(buf, "NULL"...)
lastIdx = i + 1
break
}
switch v := arg.(type) {
case int64:
buf = strconv.AppendInt(buf, v, 10)
case uint64:
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:
if noBackslashEscapes {
buf = escapeBytesQuotes(buf, v, false)
} else {
buf = escapeBytesBackslash(buf, v, false)
}
case []byte:
if v == nil {
buf = append(buf, "NULL"...)
} else {
if noBackslashEscapes {
buf = escapeBytesQuotes(buf, v, true)
} else {
buf = escapeBytesBackslash(buf, v, true)
}
}
case string:
if noBackslashEscapes {
buf = escapeStringQuotes(buf, v)
} else {
buf = escapeStringBackslash(buf, v)
}
default:
return "", driver.ErrSkip
}
if len(buf)+4 > mc.maxAllowedPacket {
return "", driver.ErrSkip
}
lastIdx = i + 1
}
case BACKTICK_BYTE:
if state == stateBacktick {
state = stateNormal
} else if state == stateNormal {
state = stateBacktick
}
}
lastChar = currentChar
}
buf = append(buf, query[lastIdx:]...)
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() {
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.skipColumns(resLen); err != nil {
return err
}
// rows
if err := mc.skipRows(); 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() {
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 {
return nil, mc.markBadConn(err)
}
// Read Result
var resLen int
resLen, _, err = handleOk.readResultSetHeaderPacket()
if err != nil {
return nil, err
}
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, nil)
return rows, err
}
// Gets the value of the given MySQL System Variable
func (mc *mysqlConn) getSystemVar(name string) (string, error) {
// Send command
handleOk := mc.clearResult()
if err := mc.writeCommandPacketStr(comQuery, "SELECT @@"+name); err != nil {
return "", 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.skipColumns(resLen); err != nil {
return "", err
}
}
dest := make([]driver.Value, resLen)
if err = rows.readRow(dest); err == nil {
// Convert to string before skipRows, which may
// overwrite the read buffer that dest[0] points into.
val := string(dest[0].([]byte))
return val, mc.skipRows()
}
}
return "", err
}
// cancel 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() {
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() || mc.buf.busy() {
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() && !mc.buf.busy()
}
var _ driver.SessionResetter = &mysqlConn{}
var _ driver.Validator = &mysqlConn{}
Server/vendor/github.com/go-sql-driver/mysql/connector.go
Generated Vendored
+229
View File
@@ -0,0 +1,229 @@
// 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"
"fmt"
"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.SplitSeq(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
dctx := ctx
if mc.cfg.Timeout > 0 {
var cancel context.CancelFunc
dctx, cancel = context.WithTimeout(ctx, c.cfg.Timeout)
defer cancel()
}
if c.cfg.DialFunc != nil {
mc.netConn, err = c.cfg.DialFunc(dctx, mc.cfg.Net, mc.cfg.Addr)
} else {
dialsLock.RLock()
dial, ok := dials[mc.cfg.Net]
dialsLock.RUnlock()
if ok {
mc.netConn, err = dial(dctx, mc.cfg.Addr)
} else {
nd := net.Dialer{}
mc.netConn, err = nd.DialContext(dctx, 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()
// Reading Handshake Initialization Packet
authData, serverCapabilities, serverExtCapabilities, 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
}
}
mc.initCapabilities(serverCapabilities, serverExtCapabilities, mc.cfg)
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/dev/mysql-server/latest/page_protocol_connection_phase.html#sect_protocol_connection_phase_fast_path_fails).
// Do not send COM_QUIT, just cleanup and return the error.
mc.cleanup()
return nil, err
}
// compression is enabled after auth, not right after sending handshake response.
if mc.capabilities&clientCompress > 0 {
mc.compress = true
mc.compIO = newCompIO(mc)
}
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
}
n, err := strconv.Atoi(maxap)
if err != nil {
mc.Close()
return nil, fmt.Errorf("invalid max_allowed_packet value (%q): %w", maxap, err)
}
mc.maxAllowedPacket = n - 1
}
if mc.maxAllowedPacket < maxPacketSize {
mc.maxWriteSize = mc.maxAllowedPacket
}
// Charset: character_set_connection, character_set_client, character_set_results
if len(mc.cfg.charsets) > 0 {
for _, cs := range mc.cfg.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 {
mc.Close()
return nil, err
}
}
// 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{}
}
Server/vendor/github.com/go-sql-driver/mysql/const.go
Generated Vendored
+205
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@@ -0,0 +1,205 @@
// 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 (
debug = false // for debugging. Set true only in development.
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:
// https://dev.mysql.com/doc/dev/mysql-server/latest/PAGE_PROTOCOL.html
const (
iOK byte = 0x00
iAuthMoreData byte = 0x01
iLocalInFile byte = 0xfb
iEOF byte = 0xfe
iERR byte = 0xff
)
// https://dev.mysql.com/doc/dev/mysql-server/latest/group__group__cs__capabilities__flags.html
// https://mariadb.com/kb/en/connection/#capabilities
type capabilityFlag uint32
const (
clientMySQL capabilityFlag = 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
)
// https://mariadb.com/kb/en/connection/#capabilities
type extendedCapabilityFlag uint32
const (
progressIndicator extendedCapabilityFlag = 1 << iota
clientComMulti
clientStmtBulkOperations
clientExtendedMetadata
clientCacheMetadata
clientUnitBulkResult
)
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 (
fieldTypeVector fieldType = iota + 0xf2
fieldTypeInvalid
fieldTypeBool
fieldTypeJSON
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
)
Server/vendor/github.com/go-sql-driver/mysql/driver.go
Generated Vendored
+118
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@@ -0,0 +1,118 @@
// 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
}
Server/vendor/github.com/go-sql-driver/mysql/dsn.go
Generated Vendored
+700
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@@ -0,0 +1,700 @@
// 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"
"maps"
"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. When set, this will be set in SET NAMES <charset> COLLATE <collation> query
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
// DialFunc specifies the dial function for creating connections
DialFunc func(ctx context.Context, network, addr string) (net.Conn, error)
// 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.
// boolean first. alphabetical order.
compress bool // Enable zlib compression
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
charsets []string // Connection charset. When set, this will be set in SET NAMES <charset> query
}
// 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
}
}
// EnableCompress sets the compression mode.
func EnableCompression(yes bool) Option {
return func(cfg *Config) error {
cfg.compress = yes
return nil
}
}
// Charset sets the connection charset and collation.
//
// charset is the connection charset.
// collation is the connection collation. It can be null or empty string.
//
// When collation is not specified, `SET NAMES <charset>` command is sent when the connection is established.
// When collation is specified, `SET NAMES <charset> COLLATE <collation>` command is sent when the connection is established.
func Charset(charset, collation string) Option {
return func(cfg *Config) error {
cfg.charsets = []string{charset}
cfg.Collation = collation
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))
maps.Copy(cp.Params, cfg.Params)
}
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 charsets := cfg.charsets; len(charsets) > 0 {
writeDSNParam(&buf, &hasParam, "charset", strings.Join(charsets, ","))
}
if col := cfg.Collation; col != "" {
writeDSNParam(&buf, &hasParam, "collation", col)
}
if cfg.ColumnsWithAlias {
writeDSNParam(&buf, &hasParam, "columnsWithAlias", "true")
}
if cfg.ConnectionAttributes != "" {
writeDSNParam(&buf, &hasParam, "connectionAttributes", url.QueryEscape(cfg.ConnectionAttributes))
}
if cfg.compress {
writeDSNParam(&buf, &hasParam, "compress", "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++ { // We cannot use k = range j here, because we use dsn[:k] below
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.SplitSeq(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)
}
// charset
case "charset":
cfg.charsets = strings.Split(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":
var isBool bool
cfg.compress, isBool = readBool(value)
if !isBool {
return errors.New("invalid bool value: " + value)
}
// 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)
}
if cfg.Params[key], err = url.QueryUnescape(value); err != nil {
return
}
}
}
return
}
func ensureHavePort(addr string) string {
if _, _, err := net.SplitHostPort(addr); err != nil {
return net.JoinHostPort(addr, "3306")
}
return addr
}
Server/vendor/github.com/go-sql-driver/mysql/errors.go
Generated Vendored
+83
View File
@@ -0,0 +1,83 @@
// 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 (
"errors"
"fmt"
"log"
"os"
)
// Various errors the driver might return. Can change between driver versions.
var (
ErrInvalidConn = errors.New("invalid connection")
ErrMalformPkt = errors.New("malformed packet")
ErrNoTLS = errors.New("TLS requested but server does not support TLS")
ErrCleartextPassword = errors.New("this user requires clear text authentication. If you still want to use it, please add 'allowCleartextPasswords=1' to your DSN")
ErrNativePassword = errors.New("this user requires mysql native password authentication")
ErrOldPassword = errors.New("this user requires old password authentication. If you still want to use it, please add 'allowOldPasswords=1' to your DSN. See also https://github.com/go-sql-driver/mysql/wiki/old_passwords")
ErrUnknownPlugin = errors.New("this authentication plugin is not supported")
ErrOldProtocol = errors.New("MySQL server does not support required protocol 41+")
ErrPktSync = errors.New("commands out of sync. You can't run this command now")
ErrPktSyncMul = errors.New("commands out of sync. Did you run multiple statements at once?")
ErrPktTooLarge = errors.New("packet for query is too large. Try adjusting the `Config.MaxAllowedPacket`")
ErrBusyBuffer = errors.New("busy buffer")
// errBadConnNoWrite is used for connection errors where nothing was sent to the database yet.
// If this happens first in a function starting a database interaction, it should be replaced by driver.ErrBadConn
// to trigger a resend. Use mc.markBadConn(err) to do this.
// See https://github.com/go-sql-driver/mysql/pull/302
errBadConnNoWrite = errors.New("bad connection")
)
var defaultLogger = Logger(log.New(os.Stderr, "[mysql] ", log.Ldate|log.Ltime))
// Logger is used to log critical error messages.
type Logger interface {
Print(v ...any)
}
// NopLogger is a nop implementation of the Logger interface.
type NopLogger struct{}
// Print implements Logger interface.
func (nl *NopLogger) Print(_ ...any) {}
// SetLogger is used to set the default logger for critical errors.
// The initial logger is os.Stderr.
func SetLogger(logger Logger) error {
if logger == nil {
return errors.New("logger is nil")
}
defaultLogger = logger
return nil
}
// MySQLError is an error type which represents a single MySQL error
type MySQLError struct {
Number uint16
SQLState [5]byte
Message string
}
func (me *MySQLError) Error() string {
if me.SQLState != [5]byte{} {
return fmt.Sprintf("Error %d (%s): %s", me.Number, me.SQLState, me.Message)
}
return fmt.Sprintf("Error %d: %s", me.Number, me.Message)
}
func (me *MySQLError) Is(err error) bool {
if merr, ok := err.(*MySQLError); ok {
return merr.Number == me.Number
}
return false
}
Server/vendor/github.com/go-sql-driver/mysql/fields.go
Generated Vendored
+228
View File
@@ -0,0 +1,228 @@
// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
//
// Copyright 2017 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 (
"database/sql"
"reflect"
)
func (mf *mysqlField) typeDatabaseName() string {
switch mf.fieldType {
case fieldTypeBit:
return "BIT"
case fieldTypeBLOB:
if mf.charSet != binaryCollationID {
return "TEXT"
}
return "BLOB"
case fieldTypeDate:
return "DATE"
case fieldTypeDateTime:
return "DATETIME"
case fieldTypeDecimal:
return "DECIMAL"
case fieldTypeDouble:
return "DOUBLE"
case fieldTypeEnum:
return "ENUM"
case fieldTypeFloat:
return "FLOAT"
case fieldTypeGeometry:
return "GEOMETRY"
case fieldTypeInt24:
if mf.flags&flagUnsigned != 0 {
return "UNSIGNED MEDIUMINT"
}
return "MEDIUMINT"
case fieldTypeJSON:
return "JSON"
case fieldTypeLong:
if mf.flags&flagUnsigned != 0 {
return "UNSIGNED INT"
}
return "INT"
case fieldTypeLongBLOB:
if mf.charSet != binaryCollationID {
return "LONGTEXT"
}
return "LONGBLOB"
case fieldTypeLongLong:
if mf.flags&flagUnsigned != 0 {
return "UNSIGNED BIGINT"
}
return "BIGINT"
case fieldTypeMediumBLOB:
if mf.charSet != binaryCollationID {
return "MEDIUMTEXT"
}
return "MEDIUMBLOB"
case fieldTypeNewDate:
return "DATE"
case fieldTypeNewDecimal:
return "DECIMAL"
case fieldTypeNULL:
return "NULL"
case fieldTypeSet:
return "SET"
case fieldTypeShort:
if mf.flags&flagUnsigned != 0 {
return "UNSIGNED SMALLINT"
}
return "SMALLINT"
case fieldTypeString:
if mf.flags&flagEnum != 0 {
return "ENUM"
} else if mf.flags&flagSet != 0 {
return "SET"
}
if mf.charSet == binaryCollationID {
return "BINARY"
}
return "CHAR"
case fieldTypeTime:
return "TIME"
case fieldTypeTimestamp:
return "TIMESTAMP"
case fieldTypeTiny:
if mf.flags&flagUnsigned != 0 {
return "UNSIGNED TINYINT"
}
return "TINYINT"
case fieldTypeTinyBLOB:
if mf.charSet != binaryCollationID {
return "TINYTEXT"
}
return "TINYBLOB"
case fieldTypeVarChar:
if mf.charSet == binaryCollationID {
return "VARBINARY"
}
return "VARCHAR"
case fieldTypeVarString:
if mf.charSet == binaryCollationID {
return "VARBINARY"
}
return "VARCHAR"
case fieldTypeYear:
return "YEAR"
case fieldTypeVector:
return "VECTOR"
default:
return ""
}
}
var (
scanTypeFloat32 = reflect.TypeFor[float32]()
scanTypeFloat64 = reflect.TypeFor[float64]()
scanTypeInt8 = reflect.TypeFor[int8]()
scanTypeInt16 = reflect.TypeFor[int16]()
scanTypeInt32 = reflect.TypeFor[int32]()
scanTypeInt64 = reflect.TypeFor[int64]()
scanTypeNullFloat = reflect.TypeFor[sql.NullFloat64]()
scanTypeNullInt = reflect.TypeFor[sql.NullInt64]()
scanTypeNullUint = reflect.TypeFor[sql.Null[uint64]]()
scanTypeNullTime = reflect.TypeFor[sql.NullTime]()
scanTypeUint8 = reflect.TypeFor[uint8]()
scanTypeUint16 = reflect.TypeFor[uint16]()
scanTypeUint32 = reflect.TypeFor[uint32]()
scanTypeUint64 = reflect.TypeFor[uint64]()
scanTypeString = reflect.TypeFor[string]()
scanTypeNullString = reflect.TypeFor[sql.NullString]()
scanTypeBytes = reflect.TypeFor[[]byte]()
scanTypeUnknown = reflect.TypeFor[*any]()
)
type mysqlField struct {
tableName string
name string
length uint32
flags fieldFlag
fieldType fieldType
decimals byte
charSet uint8
}
func (mf *mysqlField) scanType() reflect.Type {
switch mf.fieldType {
case fieldTypeTiny:
if mf.flags&flagNotNULL != 0 {
if mf.flags&flagUnsigned != 0 {
return scanTypeUint8
}
return scanTypeInt8
}
return scanTypeNullInt
case fieldTypeShort, fieldTypeYear:
if mf.flags&flagNotNULL != 0 {
if mf.flags&flagUnsigned != 0 {
return scanTypeUint16
}
return scanTypeInt16
}
return scanTypeNullInt
case fieldTypeInt24, fieldTypeLong:
if mf.flags&flagNotNULL != 0 {
if mf.flags&flagUnsigned != 0 {
return scanTypeUint32
}
return scanTypeInt32
}
return scanTypeNullInt
case fieldTypeLongLong:
if mf.flags&flagNotNULL != 0 {
if mf.flags&flagUnsigned != 0 {
return scanTypeUint64
}
return scanTypeInt64
}
if mf.flags&flagUnsigned != 0 {
return scanTypeNullUint
}
return scanTypeNullInt
case fieldTypeFloat:
if mf.flags&flagNotNULL != 0 {
return scanTypeFloat32
}
return scanTypeNullFloat
case fieldTypeDouble:
if mf.flags&flagNotNULL != 0 {
return scanTypeFloat64
}
return scanTypeNullFloat
case fieldTypeBit, fieldTypeTinyBLOB, fieldTypeMediumBLOB, fieldTypeLongBLOB,
fieldTypeBLOB, fieldTypeVarString, fieldTypeString, fieldTypeGeometry, fieldTypeVector:
if mf.charSet == binaryCollationID {
return scanTypeBytes
}
fallthrough
case fieldTypeDecimal, fieldTypeNewDecimal, fieldTypeVarChar,
fieldTypeEnum, fieldTypeSet, fieldTypeJSON, fieldTypeTime:
if mf.flags&flagNotNULL != 0 {
return scanTypeString
}
return scanTypeNullString
case fieldTypeDate, fieldTypeNewDate,
fieldTypeTimestamp, fieldTypeDateTime:
// NullTime is always returned for more consistent behavior as it can
// handle both cases of parseTime regardless if the field is nullable.
return scanTypeNullTime
default:
return scanTypeUnknown
}
}
Server/vendor/github.com/go-sql-driver/mysql/infile.go
Generated Vendored
+181
View File
@@ -0,0 +1,181 @@
// 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 (
"fmt"
"io"
"os"
"strings"
"sync"
)
var (
fileRegister map[string]struct{}
fileRegisterLock sync.RWMutex
readerRegister map[string]func() io.Reader
readerRegisterLock sync.RWMutex
)
// RegisterLocalFile adds the given file to the file allowlist,
// so that it can be used by "LOAD DATA LOCAL INFILE <filepath>".
// Alternatively you can allow the use of all local files with
// the DSN parameter 'allowAllFiles=true'
//
// filePath := "/home/gopher/data.csv"
// mysql.RegisterLocalFile(filePath)
// err := db.Exec("LOAD DATA LOCAL INFILE '" + filePath + "' INTO TABLE foo")
// if err != nil {
// ...
func RegisterLocalFile(filePath string) {
fileRegisterLock.Lock()
// lazy map init
if fileRegister == nil {
fileRegister = make(map[string]struct{})
}
fileRegister[strings.Trim(filePath, `"`)] = struct{}{}
fileRegisterLock.Unlock()
}
// DeregisterLocalFile removes the given filepath from the allowlist.
func DeregisterLocalFile(filePath string) {
fileRegisterLock.Lock()
delete(fileRegister, strings.Trim(filePath, `"`))
fileRegisterLock.Unlock()
}
// RegisterReaderHandler registers a handler function which is used
// to receive a io.Reader.
// The Reader can be used by "LOAD DATA LOCAL INFILE Reader::<name>".
// If the handler returns a io.ReadCloser Close() is called when the
// request is finished.
//
// mysql.RegisterReaderHandler("data", func() io.Reader {
// var csvReader io.Reader // Some Reader that returns CSV data
// ... // Open Reader here
// return csvReader
// })
// err := db.Exec("LOAD DATA LOCAL INFILE 'Reader::data' INTO TABLE foo")
// if err != nil {
// ...
func RegisterReaderHandler(name string, handler func() io.Reader) {
readerRegisterLock.Lock()
// lazy map init
if readerRegister == nil {
readerRegister = make(map[string]func() io.Reader)
}
readerRegister[name] = handler
readerRegisterLock.Unlock()
}
// DeregisterReaderHandler removes the ReaderHandler function with
// the given name from the registry.
func DeregisterReaderHandler(name string) {
readerRegisterLock.Lock()
delete(readerRegister, name)
readerRegisterLock.Unlock()
}
func deferredClose(err *error, closer io.Closer) {
closeErr := closer.Close()
if *err == nil {
*err = closeErr
}
}
const defaultPacketSize = 16 * 1024 // 16KB is small enough for disk readahead and large enough for TCP
func (mc *okHandler) handleInFileRequest(name string) (err error) {
var rdr io.Reader
packetSize := min(mc.maxWriteSize, defaultPacketSize)
if idx := strings.Index(name, "Reader::"); idx == 0 || (idx > 0 && name[idx-1] == '/') { // io.Reader
// The server might return an an absolute path. See issue #355.
name = name[idx+8:]
readerRegisterLock.RLock()
handler, inMap := readerRegister[name]
readerRegisterLock.RUnlock()
if inMap {
rdr = handler()
if rdr != nil {
if cl, ok := rdr.(io.Closer); ok {
defer deferredClose(&err, cl)
}
} else {
err = fmt.Errorf("reader '%s' is <nil>", name)
}
} else {
err = fmt.Errorf("reader '%s' is not registered", name)
}
} else { // File
name = strings.Trim(name, `"`)
fileRegisterLock.RLock()
_, exists := fileRegister[name]
fileRegisterLock.RUnlock()
if mc.cfg.AllowAllFiles || exists {
var file *os.File
var fi os.FileInfo
if file, err = os.Open(name); err == nil {
defer deferredClose(&err, file)
// get file size
if fi, err = file.Stat(); err == nil {
rdr = file
if fileSize := int(fi.Size()); fileSize < packetSize {
packetSize = fileSize
}
}
}
} else {
err = fmt.Errorf("local file '%s' is not registered", name)
}
}
// send content packets
var data []byte
// if packetSize == 0, the Reader contains no data
if err == nil && packetSize > 0 {
data = make([]byte, 4+packetSize)
var n int
for err == nil {
n, err = rdr.Read(data[4:])
if n > 0 {
if ioErr := mc.conn().writePacket(data[:4+n]); ioErr != nil {
return ioErr
}
}
}
if err == io.EOF {
err = nil
}
}
// send empty packet (termination)
if data == nil {
data = make([]byte, 4)
}
if ioErr := mc.conn().writePacket(data[:4]); ioErr != nil {
return ioErr
}
mc.conn().syncSequence()
// read OK packet
if err == nil {
return mc.readResultOK()
}
mc.conn().readPacket()
return err
}
Server/vendor/github.com/go-sql-driver/mysql/nulltime.go
Generated Vendored
+71
View File
@@ -0,0 +1,71 @@
// 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 (
"database/sql"
"database/sql/driver"
"fmt"
"time"
)
// NullTime represents a time.Time that may be NULL.
// NullTime implements the Scanner interface so
// it can be used as a scan destination:
//
// var nt NullTime
// err := db.QueryRow("SELECT time FROM foo WHERE id=?", id).Scan(&nt)
// ...
// if nt.Valid {
// // use nt.Time
// } else {
// // NULL value
// }
//
// # This NullTime implementation is not driver-specific
//
// Deprecated: NullTime doesn't honor the loc DSN parameter.
// NullTime.Scan interprets a time as UTC, not the loc DSN parameter.
// Use sql.NullTime instead.
type NullTime sql.NullTime
// Scan implements the Scanner interface.
// The value type must be time.Time or string / []byte (formatted time-string),
// otherwise Scan fails.
func (nt *NullTime) Scan(value any) (err error) {
if value == nil {
nt.Time, nt.Valid = time.Time{}, false
return
}
switch v := value.(type) {
case time.Time:
nt.Time, nt.Valid = v, true
return
case []byte:
nt.Time, err = parseDateTime(v, time.UTC)
nt.Valid = (err == nil)
return
case string:
nt.Time, err = parseDateTime([]byte(v), time.UTC)
nt.Valid = (err == nil)
return
}
nt.Valid = false
return fmt.Errorf("can't convert %T to time.Time", value)
}
// Value implements the driver Valuer interface.
func (nt NullTime) Value() (driver.Value, error) {
if !nt.Valid {
return nil, nil
}
return nt.Time, nil
}
Server/vendor/github.com/go-sql-driver/mysql/packets.go
Generated Vendored
+1451
View File
File diff suppressed because it is too large Load Diff
Server/vendor/github.com/go-sql-driver/mysql/result.go
Generated Vendored
+52
View File
@@ -0,0 +1,52 @@
// 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 "slices"
import "database/sql/driver"
// Result exposes data not available through *connection.Result.
//
// This is accessible by executing statements using sql.Conn.Raw() and
// downcasting the returned result:
//
// res, err := rawConn.Exec(...)
// res.(mysql.Result).AllRowsAffected()
type Result interface {
driver.Result
// AllRowsAffected returns a slice containing the affected rows for each
// executed statement.
AllRowsAffected() []int64
// AllLastInsertIds returns a slice containing the last inserted ID for each
// executed statement.
AllLastInsertIds() []int64
}
type mysqlResult struct {
// One entry in both slices is created for every executed statement result.
affectedRows []int64
insertIds []int64
}
func (res *mysqlResult) LastInsertId() (int64, error) {
return res.insertIds[len(res.insertIds)-1], nil
}
func (res *mysqlResult) RowsAffected() (int64, error) {
return res.affectedRows[len(res.affectedRows)-1], nil
}
func (res *mysqlResult) AllLastInsertIds() []int64 {
return slices.Clone(res.insertIds) // defensive copy
}
func (res *mysqlResult) AllRowsAffected() []int64 {
return slices.Clone(res.affectedRows) // defensive copy
}
Server/vendor/github.com/go-sql-driver/mysql/rows.go
Generated Vendored
+225
View File
@@ -0,0 +1,225 @@
// 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 (
"database/sql/driver"
"io"
"math"
"reflect"
)
type resultSet struct {
columns []mysqlField
columnNames []string
done bool
}
type mysqlRows struct {
mc *mysqlConn
rs resultSet
finish func()
}
type binaryRows struct {
mysqlRows
}
type textRows struct {
mysqlRows
}
func (rows *mysqlRows) Columns() []string {
if rows.rs.columnNames != nil {
return rows.rs.columnNames
}
columns := make([]string, len(rows.rs.columns))
if rows.mc != nil && rows.mc.cfg.ColumnsWithAlias {
for i := range columns {
if tableName := rows.rs.columns[i].tableName; len(tableName) > 0 {
columns[i] = tableName + "." + rows.rs.columns[i].name
} else {
columns[i] = rows.rs.columns[i].name
}
}
} else {
for i := range columns {
columns[i] = rows.rs.columns[i].name
}
}
rows.rs.columnNames = columns
return columns
}
func (rows *mysqlRows) ColumnTypeDatabaseTypeName(i int) string {
return rows.rs.columns[i].typeDatabaseName()
}
// func (rows *mysqlRows) ColumnTypeLength(i int) (length int64, ok bool) {
// return int64(rows.rs.columns[i].length), true
// }
func (rows *mysqlRows) ColumnTypeNullable(i int) (nullable, ok bool) {
return rows.rs.columns[i].flags&flagNotNULL == 0, true
}
func (rows *mysqlRows) ColumnTypePrecisionScale(i int) (int64, int64, bool) {
column := rows.rs.columns[i]
decimals := int64(column.decimals)
switch column.fieldType {
case fieldTypeDecimal, fieldTypeNewDecimal:
if decimals > 0 {
return int64(column.length) - 2, decimals, true
}
return int64(column.length) - 1, decimals, true
case fieldTypeTimestamp, fieldTypeDateTime, fieldTypeTime:
return decimals, decimals, true
case fieldTypeFloat, fieldTypeDouble:
if decimals == 0x1f {
return math.MaxInt64, math.MaxInt64, true
}
return math.MaxInt64, decimals, true
}
return 0, 0, false
}
func (rows *mysqlRows) ColumnTypeScanType(i int) reflect.Type {
return rows.rs.columns[i].scanType()
}
func (rows *mysqlRows) Close() (err error) {
if f := rows.finish; f != nil {
f()
rows.finish = nil
}
mc := rows.mc
if mc == nil {
return nil
}
if err := mc.error(); err != nil {
return err
}
// Remove unread packets from stream
if !rows.rs.done {
err = mc.skipRows()
}
if err == nil {
handleOk := mc.clearResult()
if err = handleOk.discardResults(); err != nil {
return err
}
}
rows.mc = nil
return err
}
func (rows *mysqlRows) HasNextResultSet() (b bool) {
if rows.mc == nil {
return false
}
return rows.mc.status&statusMoreResultsExists != 0
}
func (rows *mysqlRows) nextResultSet() (int, error) {
if rows.mc == nil {
return 0, io.EOF
}
if err := rows.mc.error(); err != nil {
return 0, err
}
// Remove unread packets from stream
if !rows.rs.done {
if err := rows.mc.skipRows(); err != nil {
return 0, err
}
rows.rs.done = true
}
if !rows.HasNextResultSet() {
rows.mc = nil
return 0, io.EOF
}
rows.rs = resultSet{}
// rows.mc.affectedRows and rows.mc.insertIds accumulate on each call to
// nextResultSet.
resLen, _, err := rows.mc.resultUnchanged().readResultSetHeaderPacket()
if err != nil {
// Clean up about multi-results flag
rows.rs.done = true
rows.mc.status = rows.mc.status & (^statusMoreResultsExists)
}
return resLen, err
}
func (rows *mysqlRows) nextNotEmptyResultSet() (int, error) {
for {
resLen, err := rows.nextResultSet()
if err != nil {
return 0, err
}
if resLen > 0 {
return resLen, nil
}
rows.rs.done = true
}
}
func (rows *binaryRows) NextResultSet() error {
resLen, err := rows.nextNotEmptyResultSet()
if err != nil {
return err
}
rows.rs.columns, err = rows.mc.readColumns(resLen, nil)
return err
}
func (rows *binaryRows) Next(dest []driver.Value) error {
if mc := rows.mc; mc != nil {
if err := mc.error(); err != nil {
return err
}
// Fetch next row from stream
return rows.readRow(dest)
}
return io.EOF
}
func (rows *textRows) NextResultSet() (err error) {
resLen, err := rows.nextNotEmptyResultSet()
if err != nil {
return err
}
rows.rs.columns, err = rows.mc.readColumns(resLen, nil)
return err
}
func (rows *textRows) Next(dest []driver.Value) error {
if mc := rows.mc; mc != nil {
if err := mc.error(); err != nil {
return err
}
// Fetch next row from stream
return rows.readRow(dest)
}
return io.EOF
}
Server/vendor/github.com/go-sql-driver/mysql/statement.go
Generated Vendored
+234
View File
@@ -0,0 +1,234 @@
// 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 (
"database/sql/driver"
"encoding/json"
"fmt"
"io"
"reflect"
)
type mysqlStmt struct {
mc *mysqlConn
id uint32
paramCount int
columns []mysqlField
}
func (stmt *mysqlStmt) Close() error {
if stmt.mc == nil || stmt.mc.closed.Load() {
// driver.Stmt.Close could be called more than once, thus this function
// had to be idempotent. See also Issue #450 and golang/go#16019.
// This bug has been fixed in Go 1.8.
// https://github.com/golang/go/commit/90b8a0ca2d0b565c7c7199ffcf77b15ea6b6db3a
// But we keep this function idempotent because it is safer.
return nil
}
err := stmt.mc.writeCommandPacketUint32(comStmtClose, stmt.id)
stmt.mc = nil
return err
}
func (stmt *mysqlStmt) NumInput() int {
return stmt.paramCount
}
func (stmt *mysqlStmt) ColumnConverter(idx int) driver.ValueConverter {
return converter{}
}
func (stmt *mysqlStmt) CheckNamedValue(nv *driver.NamedValue) (err error) {
nv.Value, err = converter{}.ConvertValue(nv.Value)
return
}
func (stmt *mysqlStmt) Exec(args []driver.Value) (driver.Result, error) {
if stmt.mc.closed.Load() {
return nil, driver.ErrBadConn
}
// Send command
err := stmt.writeExecutePacket(args)
if err != nil {
return nil, stmt.mc.markBadConn(err)
}
mc := stmt.mc
handleOk := stmt.mc.clearResult()
// Read Result
resLen, metadataFollows, err := handleOk.readResultSetHeaderPacket()
if err != nil {
return nil, err
}
if resLen > 0 {
// Columns
if metadataFollows && stmt.mc.extCapabilities&clientCacheMetadata != 0 {
// we can not skip column metadata because next stmt.Query() may use it.
if stmt.columns, err = mc.readColumns(resLen, stmt.columns); err != nil {
return nil, err
}
} else {
if err = mc.skipColumns(resLen); err != nil {
return nil, err
}
}
// Rows
if err = mc.skipRows(); err != nil {
return nil, err
}
}
if err := handleOk.discardResults(); err != nil {
return nil, err
}
copied := mc.result
return &copied, nil
}
func (stmt *mysqlStmt) Query(args []driver.Value) (driver.Rows, error) {
return stmt.query(args)
}
func (stmt *mysqlStmt) query(args []driver.Value) (*binaryRows, error) {
if stmt.mc.closed.Load() {
return nil, driver.ErrBadConn
}
// Send command
err := stmt.writeExecutePacket(args)
if err != nil {
return nil, stmt.mc.markBadConn(err)
}
mc := stmt.mc
// Read Result
handleOk := stmt.mc.clearResult()
resLen, metadataFollows, err := handleOk.readResultSetHeaderPacket()
if err != nil {
return nil, err
}
rows := new(binaryRows)
if resLen > 0 {
rows.mc = mc
if metadataFollows {
if rows.rs.columns, err = mc.readColumns(resLen, stmt.columns); err != nil {
return nil, err
}
stmt.columns = rows.rs.columns
} else {
if err = mc.skipEof(); err != nil {
return nil, err
}
rows.rs.columns = stmt.columns
}
} else {
rows.rs.done = true
switch err := rows.NextResultSet(); err {
case nil, io.EOF:
return rows, nil
default:
return nil, err
}
}
return rows, err
}
var jsonType = reflect.TypeFor[json.RawMessage]()
type converter struct{}
// ConvertValue mirrors the reference/default converter in database/sql/driver
// with _one_ exception. We support uint64 with their high bit and the default
// implementation does not. This function should be kept in sync with
// database/sql/driver defaultConverter.ConvertValue() except for that
// deliberate difference.
func (c converter) ConvertValue(v any) (driver.Value, error) {
if driver.IsValue(v) {
return v, nil
}
if vr, ok := v.(driver.Valuer); ok {
sv, err := callValuerValue(vr)
if err != nil {
return nil, err
}
if driver.IsValue(sv) {
return sv, nil
}
// A value returned from the Valuer interface can be "a type handled by
// a database driver's NamedValueChecker interface" so we should accept
// uint64 here as well.
if u, ok := sv.(uint64); ok {
return u, nil
}
return nil, fmt.Errorf("non-Value type %T returned from Value", sv)
}
rv := reflect.ValueOf(v)
switch rv.Kind() {
case reflect.Ptr:
// indirect pointers
if rv.IsNil() {
return nil, nil
} else {
return c.ConvertValue(rv.Elem().Interface())
}
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return rv.Int(), nil
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
return rv.Uint(), nil
case reflect.Float32, reflect.Float64:
return rv.Float(), nil
case reflect.Bool:
return rv.Bool(), nil
case reflect.Slice:
switch t := rv.Type(); {
case t == jsonType:
return v, nil
case t.Elem().Kind() == reflect.Uint8:
return rv.Bytes(), nil
default:
return nil, fmt.Errorf("unsupported type %T, a slice of %s", v, t.Elem().Kind())
}
case reflect.String:
return rv.String(), nil
}
return nil, fmt.Errorf("unsupported type %T, a %s", v, rv.Kind())
}
var valuerReflectType = reflect.TypeFor[driver.Valuer]()
// callValuerValue returns vr.Value(), with one exception:
// If vr.Value is an auto-generated method on a pointer type and the
// pointer is nil, it would panic at runtime in the panicwrap
// method. Treat it like nil instead.
//
// This is so people can implement driver.Value on value types and
// still use nil pointers to those types to mean nil/NULL, just like
// string/*string.
//
// This is an exact copy of the same-named unexported function from the
// database/sql package.
func callValuerValue(vr driver.Valuer) (v driver.Value, err error) {
if rv := reflect.ValueOf(vr); rv.Kind() == reflect.Ptr &&
rv.IsNil() &&
rv.Type().Elem().Implements(valuerReflectType) {
return nil, nil
}
return vr.Value()
}
Server/vendor/github.com/go-sql-driver/mysql/transaction.go
Generated Vendored
+45
View File
@@ -0,0 +1,45 @@
// 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
type mysqlTx struct {
mc *mysqlConn
}
func (tx *mysqlTx) Commit() (err error) {
if tx.mc == nil {
return ErrInvalidConn
}
if tx.mc.closed.Load() {
err = tx.mc.error()
if err == nil {
err = ErrInvalidConn
}
return
}
err = tx.mc.exec("COMMIT")
tx.mc = nil
return
}
func (tx *mysqlTx) Rollback() (err error) {
if tx.mc == nil {
return ErrInvalidConn
}
if tx.mc.closed.Load() {
err = tx.mc.error()
if err == nil {
err = ErrInvalidConn
}
return
}
err = tx.mc.exec("ROLLBACK")
tx.mc = nil
return
}
Server/vendor/github.com/go-sql-driver/mysql/utils.go
Generated Vendored
+805
View File
@@ -0,0 +1,805 @@
// 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 (
"crypto/tls"
"database/sql"
"database/sql/driver"
"encoding/binary"
"errors"
"fmt"
"io"
"strconv"
"strings"
"sync"
"sync/atomic"
"time"
)
// Registry for custom tls.Configs
var (
tlsConfigLock sync.RWMutex
tlsConfigRegistry map[string]*tls.Config
)
// RegisterTLSConfig registers a custom tls.Config to be used with sql.Open.
// Use the key as a value in the DSN where tls=value.
//
// Note: The provided tls.Config is exclusively owned by the driver after
// registering it.
//
// rootCertPool := x509.NewCertPool()
// pem, err := os.ReadFile("/path/ca-cert.pem")
// if err != nil {
// log.Fatal(err)
// }
// if ok := rootCertPool.AppendCertsFromPEM(pem); !ok {
// log.Fatal("Failed to append PEM.")
// }
// clientCert := make([]tls.Certificate, 0, 1)
// certs, err := tls.LoadX509KeyPair("/path/client-cert.pem", "/path/client-key.pem")
// if err != nil {
// log.Fatal(err)
// }
// clientCert = append(clientCert, certs)
// mysql.RegisterTLSConfig("custom", &tls.Config{
// RootCAs: rootCertPool,
// Certificates: clientCert,
// })
// db, err := sql.Open("mysql", "user@tcp(localhost:3306)/test?tls=custom")
func RegisterTLSConfig(key string, config *tls.Config) error {
if _, isBool := readBool(key); isBool || strings.ToLower(key) == "skip-verify" || strings.ToLower(key) == "preferred" {
return fmt.Errorf("key '%s' is reserved", key)
}
tlsConfigLock.Lock()
if tlsConfigRegistry == nil {
tlsConfigRegistry = make(map[string]*tls.Config)
}
tlsConfigRegistry[key] = config
tlsConfigLock.Unlock()
return nil
}
// DeregisterTLSConfig removes the tls.Config associated with key.
func DeregisterTLSConfig(key string) {
tlsConfigLock.Lock()
if tlsConfigRegistry != nil {
delete(tlsConfigRegistry, key)
}
tlsConfigLock.Unlock()
}
func getTLSConfigClone(key string) (config *tls.Config) {
tlsConfigLock.RLock()
if v, ok := tlsConfigRegistry[key]; ok {
config = v.Clone()
}
tlsConfigLock.RUnlock()
return
}
// Returns the bool value of the input.
// The 2nd return value indicates if the input was a valid bool value
func readBool(input string) (value bool, valid bool) {
switch input {
case "1", "true", "TRUE", "True":
return true, true
case "0", "false", "FALSE", "False":
return false, true
}
// Not a valid bool value
return
}
/******************************************************************************
* Time related utils *
******************************************************************************/
func parseDateTime(b []byte, loc *time.Location) (time.Time, error) {
const base = "0000-00-00 00:00:00.000000"
switch len(b) {
case 10, 19, 21, 22, 23, 24, 25, 26: // up to "YYYY-MM-DD HH:MM:SS.MMMMMM"
if string(b) == base[:len(b)] {
return time.Time{}, nil
}
year, err := parseByteYear(b)
if err != nil {
return time.Time{}, err
}
if b[4] != '-' {
return time.Time{}, fmt.Errorf("bad value for field: `%c`", b[4])
}
m, err := parseByte2Digits(b[5], b[6])
if err != nil {
return time.Time{}, err
}
month := time.Month(m)
if b[7] != '-' {
return time.Time{}, fmt.Errorf("bad value for field: `%c`", b[7])
}
day, err := parseByte2Digits(b[8], b[9])
if err != nil {
return time.Time{}, err
}
if len(b) == 10 {
return time.Date(year, month, day, 0, 0, 0, 0, loc), nil
}
if b[10] != ' ' {
return time.Time{}, fmt.Errorf("bad value for field: `%c`", b[10])
}
hour, err := parseByte2Digits(b[11], b[12])
if err != nil {
return time.Time{}, err
}
if b[13] != ':' {
return time.Time{}, fmt.Errorf("bad value for field: `%c`", b[13])
}
min, err := parseByte2Digits(b[14], b[15])
if err != nil {
return time.Time{}, err
}
if b[16] != ':' {
return time.Time{}, fmt.Errorf("bad value for field: `%c`", b[16])
}
sec, err := parseByte2Digits(b[17], b[18])
if err != nil {
return time.Time{}, err
}
if len(b) == 19 {
return time.Date(year, month, day, hour, min, sec, 0, loc), nil
}
if b[19] != '.' {
return time.Time{}, fmt.Errorf("bad value for field: `%c`", b[19])
}
nsec, err := parseByteNanoSec(b[20:])
if err != nil {
return time.Time{}, err
}
return time.Date(year, month, day, hour, min, sec, nsec, loc), nil
default:
return time.Time{}, fmt.Errorf("invalid time bytes: %s", b)
}
}
func parseByteYear(b []byte) (int, error) {
year, n := 0, 1000
for i := range 4 {
v, err := bToi(b[i])
if err != nil {
return 0, err
}
year += v * n
n /= 10
}
return year, nil
}
func parseByte2Digits(b1, b2 byte) (int, error) {
d1, err := bToi(b1)
if err != nil {
return 0, err
}
d2, err := bToi(b2)
if err != nil {
return 0, err
}
return d1*10 + d2, nil
}
func parseByteNanoSec(b []byte) (int, error) {
ns, digit := 0, 100000 // max is 6-digits
for i := range b {
v, err := bToi(b[i])
if err != nil {
return 0, err
}
ns += v * digit
digit /= 10
}
// nanoseconds has 10-digits. (needs to scale digits)
// 10 - 6 = 4, so we have to multiple 1000.
return ns * 1000, nil
}
func bToi(b byte) (int, error) {
if b < '0' || b > '9' {
return 0, errors.New("not [0-9]")
}
return int(b - '0'), nil
}
func parseBinaryDateTime(num uint64, data []byte, loc *time.Location) (driver.Value, error) {
switch num {
case 0:
return time.Time{}, nil
case 4:
return time.Date(
int(binary.LittleEndian.Uint16(data[:2])), // year
time.Month(data[2]), // month
int(data[3]), // day
0, 0, 0, 0,
loc,
), nil
case 7:
return time.Date(
int(binary.LittleEndian.Uint16(data[:2])), // year
time.Month(data[2]), // month
int(data[3]), // day
int(data[4]), // hour
int(data[5]), // minutes
int(data[6]), // seconds
0,
loc,
), nil
case 11:
return time.Date(
int(binary.LittleEndian.Uint16(data[:2])), // year
time.Month(data[2]), // month
int(data[3]), // day
int(data[4]), // hour
int(data[5]), // minutes
int(data[6]), // seconds
int(binary.LittleEndian.Uint32(data[7:11]))*1000, // nanoseconds
loc,
), nil
}
return nil, fmt.Errorf("invalid DATETIME packet length %d", num)
}
func appendDateTime(buf []byte, t time.Time, timeTruncate time.Duration) ([]byte, error) {
if timeTruncate > 0 {
t = t.Truncate(timeTruncate)
}
year, month, day := t.Date()
hour, min, sec := t.Clock()
nsec := t.Nanosecond()
if year < 1 || year > 9999 {
return buf, errors.New("year is not in the range [1, 9999]: " + strconv.Itoa(year)) // use errors.New instead of fmt.Errorf to avoid year escape to heap
}
year100 := year / 100
year1 := year % 100
var localBuf [len("2006-01-02T15:04:05.999999999")]byte // does not escape
localBuf[0], localBuf[1], localBuf[2], localBuf[3] = digits10[year100], digits01[year100], digits10[year1], digits01[year1]
localBuf[4] = '-'
localBuf[5], localBuf[6] = digits10[month], digits01[month]
localBuf[7] = '-'
localBuf[8], localBuf[9] = digits10[day], digits01[day]
if hour == 0 && min == 0 && sec == 0 && nsec == 0 {
return append(buf, localBuf[:10]...), nil
}
localBuf[10] = ' '
localBuf[11], localBuf[12] = digits10[hour], digits01[hour]
localBuf[13] = ':'
localBuf[14], localBuf[15] = digits10[min], digits01[min]
localBuf[16] = ':'
localBuf[17], localBuf[18] = digits10[sec], digits01[sec]
if nsec == 0 {
return append(buf, localBuf[:19]...), nil
}
nsec100000000 := nsec / 100000000
nsec1000000 := (nsec / 1000000) % 100
nsec10000 := (nsec / 10000) % 100
nsec100 := (nsec / 100) % 100
nsec1 := nsec % 100
localBuf[19] = '.'
// milli second
localBuf[20], localBuf[21], localBuf[22] =
digits01[nsec100000000], digits10[nsec1000000], digits01[nsec1000000]
// micro second
localBuf[23], localBuf[24], localBuf[25] =
digits10[nsec10000], digits01[nsec10000], digits10[nsec100]
// nano second
localBuf[26], localBuf[27], localBuf[28] =
digits01[nsec100], digits10[nsec1], digits01[nsec1]
// trim trailing zeros
n := len(localBuf)
for n > 0 && localBuf[n-1] == '0' {
n--
}
return append(buf, localBuf[:n]...), nil
}
// zeroDateTime is used in formatBinaryDateTime to avoid an allocation
// if the DATE or DATETIME has the zero value.
// It must never be changed.
// The current behavior depends on database/sql copying the result.
var zeroDateTime = []byte("0000-00-00 00:00:00.000000")
const digits01 = "0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789"
const digits10 = "0000000000111111111122222222223333333333444444444455555555556666666666777777777788888888889999999999"
func appendMicrosecs(dst, src []byte, decimals int) []byte {
if decimals <= 0 {
return dst
}
if len(src) == 0 {
return append(dst, ".000000"[:decimals+1]...)
}
microsecs := binary.LittleEndian.Uint32(src[:4])
p1 := byte(microsecs / 10000)
microsecs -= 10000 * uint32(p1)
p2 := byte(microsecs / 100)
microsecs -= 100 * uint32(p2)
p3 := byte(microsecs)
switch decimals {
default:
return append(dst, '.',
digits10[p1], digits01[p1],
digits10[p2], digits01[p2],
digits10[p3], digits01[p3],
)
case 1:
return append(dst, '.',
digits10[p1],
)
case 2:
return append(dst, '.',
digits10[p1], digits01[p1],
)
case 3:
return append(dst, '.',
digits10[p1], digits01[p1],
digits10[p2],
)
case 4:
return append(dst, '.',
digits10[p1], digits01[p1],
digits10[p2], digits01[p2],
)
case 5:
return append(dst, '.',
digits10[p1], digits01[p1],
digits10[p2], digits01[p2],
digits10[p3],
)
}
}
func formatBinaryDateTime(src []byte, length uint8) (driver.Value, error) {
// length expects the deterministic length of the zero value,
// negative time and 100+ hours are automatically added if needed
if len(src) == 0 {
return zeroDateTime[:length], nil
}
var dst []byte // return value
var p1, p2, p3 byte // current digit pair
switch length {
case 10, 19, 21, 22, 23, 24, 25, 26:
default:
t := "DATE"
if length > 10 {
t += "TIME"
}
return nil, fmt.Errorf("illegal %s length %d", t, length)
}
switch len(src) {
case 4, 7, 11:
default:
t := "DATE"
if length > 10 {
t += "TIME"
}
return nil, fmt.Errorf("illegal %s packet length %d", t, len(src))
}
dst = make([]byte, 0, length)
// start with the date
year := binary.LittleEndian.Uint16(src[:2])
pt := year / 100
p1 = byte(year - 100*uint16(pt))
p2, p3 = src[2], src[3]
dst = append(dst,
digits10[pt], digits01[pt],
digits10[p1], digits01[p1], '-',
digits10[p2], digits01[p2], '-',
digits10[p3], digits01[p3],
)
if length == 10 {
return dst, nil
}
if len(src) == 4 {
return append(dst, zeroDateTime[10:length]...), nil
}
dst = append(dst, ' ')
p1 = src[4] // hour
src = src[5:]
// p1 is 2-digit hour, src is after hour
p2, p3 = src[0], src[1]
dst = append(dst,
digits10[p1], digits01[p1], ':',
digits10[p2], digits01[p2], ':',
digits10[p3], digits01[p3],
)
return appendMicrosecs(dst, src[2:], int(length)-20), nil
}
func formatBinaryTime(src []byte, length uint8) (driver.Value, error) {
// length expects the deterministic length of the zero value,
// negative time and 100+ hours are automatically added if needed
if len(src) == 0 {
return zeroDateTime[11 : 11+length], nil
}
var dst []byte // return value
switch length {
case
8, // time (can be up to 10 when negative and 100+ hours)
10, 11, 12, 13, 14, 15: // time with fractional seconds
default:
return nil, fmt.Errorf("illegal TIME length %d", length)
}
switch len(src) {
case 8, 12:
default:
return nil, fmt.Errorf("invalid TIME packet length %d", len(src))
}
// +2 to enable negative time and 100+ hours
dst = make([]byte, 0, length+2)
if src[0] == 1 {
dst = append(dst, '-')
}
days := binary.LittleEndian.Uint32(src[1:5])
hours := int64(days)*24 + int64(src[5])
if hours >= 100 {
dst = strconv.AppendInt(dst, hours, 10)
} else {
dst = append(dst, digits10[hours], digits01[hours])
}
min, sec := src[6], src[7]
dst = append(dst, ':',
digits10[min], digits01[min], ':',
digits10[sec], digits01[sec],
)
return appendMicrosecs(dst, src[8:], int(length)-9), nil
}
/******************************************************************************
* Convert from and to bytes *
******************************************************************************/
// 24bit integer: used for packet headers.
func putUint24(data []byte, n int) {
data[2] = byte(n >> 16)
data[1] = byte(n >> 8)
data[0] = byte(n)
}
func getUint24(data []byte) int {
return int(data[2])<<16 | int(data[1])<<8 | int(data[0])
}
func uint64ToString(n uint64) []byte {
var a [20]byte
i := 20
// U+0030 = 0
// ...
// U+0039 = 9
var q uint64
for n >= 10 {
i--
q = n / 10
a[i] = uint8(n-q*10) + 0x30
n = q
}
i--
a[i] = uint8(n) + 0x30
return a[i:]
}
// returns the string read as a bytes slice, whether the value is NULL,
// the number of bytes read and an error, in case the string is longer than
// the input slice
func readLengthEncodedString(b []byte) ([]byte, bool, int, error) {
// Get length
num, isNull, n := readLengthEncodedInteger(b)
if num < 1 {
return b[n:n], isNull, n, nil
}
n += int(num)
// Check data length
if len(b) >= n {
return b[n-int(num) : n : n], false, n, nil
}
return nil, false, n, io.EOF
}
// returns the number of bytes skipped and an error, in case the string is
// longer than the input slice
func skipLengthEncodedString(b []byte) (int, error) {
// Get length
num, _, n := readLengthEncodedInteger(b)
if num < 1 {
return n, nil
}
n += int(num)
// Check data length
if len(b) >= n {
return n, nil
}
return n, io.EOF
}
// returns the number read, whether the value is NULL and the number of bytes read
func readLengthEncodedInteger(b []byte) (uint64, bool, int) {
// See issue #349
if len(b) == 0 {
return 0, true, 1
}
switch b[0] {
// 251: NULL
case 0xfb:
return 0, true, 1
// 252: value of following 2
case 0xfc:
return uint64(binary.LittleEndian.Uint16(b[1:])), false, 3
// 253: value of following 3
case 0xfd:
return uint64(getUint24(b[1:])), false, 4
// 254: value of following 8
case 0xfe:
return uint64(binary.LittleEndian.Uint64(b[1:])), false, 9
}
// 0-250: value of first byte
return uint64(b[0]), false, 1
}
// encodes a uint64 value and appends it to the given bytes slice
func appendLengthEncodedInteger(b []byte, n uint64) []byte {
switch {
case n <= 250:
return append(b, byte(n))
case n <= 0xffff:
b = append(b, 0xfc)
return binary.LittleEndian.AppendUint16(b, uint16(n))
case n <= 0xffffff:
return append(b, 0xfd, byte(n), byte(n>>8), byte(n>>16))
}
b = append(b, 0xfe)
return binary.LittleEndian.AppendUint64(b, n)
}
func appendLengthEncodedString(b []byte, s string) []byte {
b = appendLengthEncodedInteger(b, uint64(len(s)))
return append(b, s...)
}
// reserveBuffer checks cap(buf) and expand buffer to len(buf) + appendSize.
// If cap(buf) is not enough, reallocate new buffer.
func reserveBuffer(buf []byte, appendSize int) []byte {
newSize := len(buf) + appendSize
if cap(buf) < newSize {
// Grow buffer exponentially
newBuf := make([]byte, len(buf)*2+appendSize)
copy(newBuf, buf)
buf = newBuf
}
return buf[:newSize]
}
// Lookup table for backslash escapes (used for both string and bytes)
var backslashEscapeTable [256]byte
func init() {
backslashEscapeTable['\x00'] = '0'
backslashEscapeTable['\n'] = 'n'
backslashEscapeTable['\r'] = 'r'
backslashEscapeTable['\x1a'] = 'Z'
backslashEscapeTable['\''] = '\''
backslashEscapeTable['"'] = '"'
backslashEscapeTable['\\'] = '\\'
}
// escapeStringBackslash is similar to escapeBytesBackslash but for string.
func escapeStringBackslash(buf []byte, v string) []byte {
pos := len(buf)
buf = reserveBuffer(buf, len(v)*2+2)
buf[pos] = '\''
pos++
for i := 0; i < len(v); i++ {
c := v[i]
if esc := backslashEscapeTable[c]; esc != 0 {
buf[pos+1] = esc
buf[pos] = '\\'
pos += 2
} else {
buf[pos] = c
pos++
}
}
buf[pos] = '\''
pos++
return buf[:pos]
}
// escapeBytesBackslash appends _binary'...' or '...' with backslash escaping for bytes.
func escapeBytesBackslash(buf, v []byte, binary bool) []byte {
pos := len(buf)
if binary {
buf = reserveBuffer(buf, len(v)*2+9)
copy(buf[pos:], []byte("_binary'"))
pos += 8
} else {
buf = reserveBuffer(buf, len(v)*2+2)
buf[pos] = '\''
pos++
}
for _, c := range v {
if esc := backslashEscapeTable[c]; esc != 0 {
buf[pos+1] = esc
buf[pos] = '\\'
pos += 2
} else {
buf[pos] = c
pos++
}
}
buf[pos] = '\''
pos++
return buf[:pos]
}
// escapeBytesQuotes appends _binary'...' or '...' with single-quote escaping for bytes.
func escapeBytesQuotes(buf, v []byte, binary bool) []byte {
pos := len(buf)
if binary {
buf = reserveBuffer(buf, len(v)*2+9)
copy(buf[pos:], []byte("_binary'"))
pos += 8
} else {
buf = reserveBuffer(buf, len(v)*2+2)
buf[pos] = '\''
pos++
}
for _, c := range v {
if c == '\'' {
buf[pos+1] = '\''
buf[pos] = '\''
pos += 2
} else {
buf[pos] = c
pos++
}
}
buf[pos] = '\''
pos++
return buf[:pos]
}
// escapeStringQuotes is similar to escapeBytesQuotes but for string.
func escapeStringQuotes(buf []byte, v string) []byte {
pos := len(buf)
buf = reserveBuffer(buf, len(v)*2+2)
buf[pos] = '\''
pos++
for i := range len(v) {
c := v[i]
if c == '\'' {
buf[pos+1] = '\''
buf[pos] = '\''
pos += 2
} else {
buf[pos] = c
pos++
}
}
buf[pos] = '\''
pos++
return buf[:pos]
}
/******************************************************************************
* Sync utils *
******************************************************************************/
// noCopy may be embedded into structs which must not be copied
// after the first use.
//
// See https://github.com/golang/go/issues/8005#issuecomment-190753527
// for details.
type noCopy struct{}
// Lock is a no-op used by -copylocks checker from `go vet`.
func (*noCopy) Lock() {}
// Unlock is a no-op used by -copylocks checker from `go vet`.
// noCopy should implement sync.Locker from Go 1.11
// https://github.com/golang/go/commit/c2eba53e7f80df21d51285879d51ab81bcfbf6bc
// https://github.com/golang/go/issues/26165
func (*noCopy) Unlock() {}
// atomicError is a wrapper for atomically accessed error values
type atomicError struct {
_ noCopy
value atomic.Value
}
// Set sets the error value regardless of the previous value.
// The value must not be nil
func (ae *atomicError) Set(value error) {
ae.value.Store(value)
}
// Value returns the current error value
func (ae *atomicError) Value() error {
if v := ae.value.Load(); v != nil {
// this will panic if the value doesn't implement the error interface
return v.(error)
}
return nil
}
func namedValueToValue(named []driver.NamedValue) ([]driver.Value, error) {
dargs := make([]driver.Value, len(named))
for n, param := range named {
if len(param.Name) > 0 {
// TODO: support the use of Named Parameters #561
return nil, errors.New("mysql: driver does not support the use of Named Parameters")
}
dargs[n] = param.Value
}
return dargs, nil
}
func mapIsolationLevel(level driver.IsolationLevel) (string, error) {
switch sql.IsolationLevel(level) {
case sql.LevelRepeatableRead:
return "REPEATABLE READ", nil
case sql.LevelReadCommitted:
return "READ COMMITTED", nil
case sql.LevelReadUncommitted:
return "READ UNCOMMITTED", nil
case sql.LevelSerializable:
return "SERIALIZABLE", nil
default:
return "", fmt.Errorf("mysql: unsupported isolation level: %v", level)
}
}