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Noah Misch 0170b10dff Restore PGREQUIRESSL recognition in libpq. 
Commit 65c3bf19fd moved handling of the,
already then, deprecated requiressl parameter into conninfo_storeval().
The default PGREQUIRESSL environment variable was however lost in the
change resulting in a potentially silent accept of a non-SSL connection
even when set.  Its documentation remained.  Restore its implementation.
Also amend the documentation to mark PGREQUIRESSL as deprecated for
those not following the link to requiressl.  Back-patch to 9.3, where
commit 65c3bf1 first appeared.

Behavior has been more complex when the user provides both deprecated
and non-deprecated settings.  Before commit 65c3bf1, libpq operated
according to the first of these found:

  requiressl=1
  PGREQUIRESSL=1
  sslmode=*
  PGSSLMODE=*

(Note requiressl=0 didn't override sslmode=*; it would only suppress
PGREQUIRESSL=1 or a previous requiressl=1.  PGREQUIRESSL=0 had no effect
whatsoever.)  Starting with commit 65c3bf1, libpq ignored PGREQUIRESSL,
and order of precedence changed to this:

  last of requiressl=* or sslmode=*
  PGSSLMODE=*

Starting now, adopt the following order of precedence:

  last of requiressl=* or sslmode=*
  PGSSLMODE=*
  PGREQUIRESSL=1

This retains the 65c3bf1 behavior for connection strings that contain
both requiressl=* and sslmode=*.  It retains the 65c3bf1 change that
either connection string option overrides both environment variables.
For the first time, PGSSLMODE has precedence over PGREQUIRESSL; this
avoids reducing security of "PGREQUIRESSL=1 PGSSLMODE=verify-full"
configurations originating under v9.3 and later.

Daniel Gustafsson

Security: CVE-2017-7485
 		2017-05-08 07:24:24 -07:00
config Remove use of Jade and DSSSL 2017-04-06 22:09:11 -04:00
contrib Remove support for password_encryption='off' / 'plain'. 2017-05-08 11:26:07 +03:00
doc Restore PGREQUIRESSL recognition in libpq. 2017-05-08 07:24:24 -07:00
src Restore PGREQUIRESSL recognition in libpq. 2017-05-08 07:24:24 -07:00
.dir-locals.el emacs: Set indent-tabs-mode in perl-mode 2015-04-12 23:53:23 -04:00
.gitattributes Remove contrib/tsearch2. 2017-02-13 11:06:11 -05:00
.gitignore Allow .so minor version numbers above 9 in .gitignore. 2016-08-15 17:35:35 -04:00
COPYRIGHT Update copyright for 2017 2017-01-03 12:37:53 -05:00
GNUmakefile.in Have "make coverage" recurse into contrib as well 2016-09-05 18:44:36 -03:00
HISTORY Improve text of stub HISTORY file. 2014-02-12 18:16:17 -05:00
Makefile Allow make check in PL directories 2011-02-15 06:52:12 +02:00
README Don't generate plain-text HISTORY and src/test/regress/README anymore. 2014-02-10 20:48:04 -05:00
README.git Don't generate plain-text HISTORY and src/test/regress/README anymore. 2014-02-10 20:48:04 -05:00
aclocal.m4 ICU support 2017-03-23 15:28:48 -04:00
configure Revert "Use pselect(2) not select(2), if available, to wait in postmaster's loop." 2017-04-24 18:29:03 -04:00
configure.in Revert "Use pselect(2) not select(2), if available, to wait in postmaster's loop." 2017-04-24 18:29:03 -04:00

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:

	http://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
http://www.postgresql.org/download/.  For more information look at our
web site located at http://www.postgresql.org/.