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Add connection parameters to control SSL protocol min/max in libpq

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These two new parameters, named sslminprotocolversion and
sslmaxprotocolversion, allow to respectively control the minimum and the
maximum version of the SSL protocol used for the SSL connection attempt.
The default setting is to allow any version for both the minimum and the
maximum bounds, causing libpq to rely on the bounds set by the backend
when negotiating the protocol to use for an SSL connection.  The bounds
are checked when the values are set at the earliest stage possible as
this makes the checks independent of any SSL implementation.

Author: Daniel Gustafsson
Reviewed-by: Michael Paquier, Cary Huang
Discussion: https://postgr.es/m/4F246AE3-A7AE-471E-BD3D-C799D3748E03@yesql.se
This commit is contained in:
Michael Paquier
2020-01-28 10:40:48 +09:00
parent 6f38d4dac3
commit ff8ca5fadd
7 changed files with 284 additions and 2 deletions
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23
src/test/ssl/t/001_ssltests.pl
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@@ -13,7 +13,7 @@ use SSLServer;
if ($ENV{with_openssl} eq 'yes')
{
plan tests => 86;
plan tests => 93;
}
else
{
@@ -356,6 +356,27 @@ command_like(
^\d+,t,TLSv[\d.]+,[\w-]+,\d+,f,_null_,_null_,_null_\r?$}mx,
'pg_stat_ssl view without client certificate');
# Test min/max SSL protocol versions.
test_connect_ok(
$common_connstr,
"sslrootcert=ssl/root+server_ca.crt sslmode=require sslminprotocolversion=TLSv1.2 sslmaxprotocolversion=TLSv1.2",
"connection success with correct range of TLS protocol versions");
test_connect_fails(
$common_connstr,
"sslrootcert=ssl/root+server_ca.crt sslmode=require sslminprotocolversion=TLSv1.2 sslmaxprotocolversion=TLSv1.1",
qr/invalid SSL protocol version range/,
"connection failure with incorrect range of TLS protocol versions");
test_connect_fails(
$common_connstr,
"sslrootcert=ssl/root+server_ca.crt sslmode=require sslminprotocolversion=incorrect_tls",
qr/invalid sslminprotocolversion value/,
"connection failure with an incorrect SSL protocol minimum bound");
test_connect_fails(
$common_connstr,
"sslrootcert=ssl/root+server_ca.crt sslmode=require sslmaxprotocolversion=incorrect_tls",
qr/invalid sslmaxprotocolversion value/,
"connection failure with an incorrect SSL protocol maximum bound");
### Server-side tests.
###
### Test certificate authorization.