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Nathan Bossart 562bee0fc1 Don't truncate database and user names in startup packets. 
Unlike commands such as CREATE DATABASE, ProcessStartupPacket()
does not perform multibyte-aware truncation of overlength names.
This means that connection attempts might fail even if the user
provides the same overlength names that were used in CREATE
DATABASE, CREATE ROLE, etc.  Ideally, we'd do the same multibyte-
aware truncation in both code paths, but it doesn't seem worth the
added complexity of trying to discover the encoding of the names.
Instead, let's simply skip truncating the names in the startup
packet and let the user/database lookup fail later on.  With this
change, users must provide the exact names stored in the catalogs,
even if the names were truncated.

This reverts commit d18c1d1f51.

Author: Bertrand Drouvot
Reviewed-by: Kyotaro Horiguchi, Tom Lane
Discussion: https://postgr.es/m/07436793-1426-29b2-f924-db7422a05fb7%40gmail.com
 		2023-07-03 13:18:05 -07:00
config Fix typos in comments 2023-05-02 12:23:08 +09:00
contrib Remove expensive test of postgres_fdw batch inserts 2023-07-03 18:16:58 +02:00
doc Change type of pg_statistic_ext.stxstattarget 2023-07-03 07:18:57 +02:00
src Don't truncate database and user names in startup packets. 2023-07-03 13:18:05 -07:00
.cirrus.yml cirrus/freebsd: define ENFORCE_REGRESSION_TEST_NAME_RESTRICTIONS 2023-07-03 10:35:48 +02:00
.dir-locals.el Make Emacs perl-mode indent more like perltidy. 2019-01-13 11:32:31 -08:00
.editorconfig Add .editorconfig 2019-12-18 09:13:13 +01:00
.git-blame-ignore-revs Add b334612b8 to .git-blame-ignore-revs. 2023-06-20 09:52:52 -04:00
.gitattributes gitattributes: Ignore imported pg_bsd_indent code for whitespace checks 2023-02-22 09:00:28 +01:00
.gitignore Update top-level .gitignore. 2022-12-04 15:23:00 -05:00
COPYRIGHT Update copyright for 2023 2023-01-02 15:00:37 -05:00
GNUmakefile.in Integrate pg_bsd_indent into our build/test infrastructure. 2023-02-12 12:22:21 -05:00
HISTORY Canonicalize some URLs 2020-02-10 20:47:50 +01:00
Makefile Dynamically find correct installation docs in Makefile. 2022-01-19 14:48:25 +01:00
README Canonicalize some URLs 2020-02-10 20:47:50 +01:00
README.git Canonicalize some URLs 2020-02-10 20:47:50 +01:00
aclocal.m4 autoconf: Move export_dynamic determination to configure 2022-12-06 18:55:28 -08:00
configure Remove support for OpenSSL 1.0.1 2023-07-03 13:20:27 +09:00
configure.ac Remove support for OpenSSL 1.0.1 2023-07-03 13:20:27 +09:00
meson.build Remove support for OpenSSL 1.0.1 2023-07-03 13:20:27 +09:00
meson_options.txt meson: Attach colon to keyword argument 2023-06-29 12:53:41 +02:00

README 

PostgreSQL Database Management System
=====================================

This directory contains the source code distribution of the PostgreSQL
database management system.

PostgreSQL is an advanced object-relational database management system
that supports an extended subset of the SQL standard, including
transactions, foreign keys, subqueries, triggers, user-defined types
and functions.  This distribution also contains C language bindings.

PostgreSQL has many language interfaces, many of which are listed here:

	https://www.postgresql.org/download/

See the file INSTALL for instructions on how to build and install
PostgreSQL.  That file also lists supported operating systems and
hardware platforms and contains information regarding any other
software packages that are required to build or run the PostgreSQL
system.  Copyright and license information can be found in the
file COPYRIGHT.  A comprehensive documentation set is included in this
distribution; it can be read as described in the installation
instructions.

The latest version of this software may be obtained at
https://www.postgresql.org/download/.  For more information look at our
web site located at https://www.postgresql.org/.