1 files changed, 98 insertions, 0 deletions
diff --git a/src/test/authentication/t/002_saslprep.pl b/src/test/authentication/t/002_saslprep.pl
new file mode 100644
index 00000000000..0c18528e7af
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+++ b/src/test/authentication/t/002_saslprep.pl
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+# Test password normalization in SCRAM.
+#
+# This test cannot run on Windows as Postgres cannot be set up with Unix
+# sockets and needs to go through SSPI.
+
+use strict;
+use warnings;
+use PostgresNode;
+use TestLib;
+use Test::More tests => 12;
+
+# Delete pg_hba.conf from the given node, add a new entry to it
+# and then execute a reload to refresh it.
+sub reset_pg_hba
+{
+	my $node = shift;
+	my $hba_method = shift;
+
+	unlink($node->data_dir . '/pg_hba.conf');
+	$node->append_conf('pg_hba.conf', "local all all $hba_method");
+	$node->reload;
+}
+
+# Test access for a single role, useful to wrap all tests into one.
+sub test_login
+{
+	my $node = shift;
+	my $role = shift;
+	my $password = shift;
+	my $expected_res = shift;
+	my $status_string = 'failed';
+
+	$status_string = 'success' if ($expected_res eq 0);
+
+	$ENV{"PGPASSWORD"} = $password;
+	my $res = $node->psql('postgres', 'SELECT 1', extra_params => ['-U', $role]);
+	is($res, $expected_res,
+	   "authentication $status_string for role $role with password $password");
+}
+
+SKIP:
+{
+	skip "authentication tests cannot run on Windows", 12 if ($windows_os);
+
+	# Initialize master node
+	my $node = get_new_node('master');
+	$node->init;
+	$node->start;
+
+	# These tests are based on the example strings from RFC4013.txt,
+	# Section "3. Examples":
+	#
+	# #  Input            Output     Comments
+	# -  -----            ------     --------
+	# 1  I<U+00AD>X       IX         SOFT HYPHEN mapped to nothing
+	# 2  user             user       no transformation
+	# 3  USER             USER       case preserved, will not match #2
+	# 4  <U+00AA>         a          output is NFKC, input in ISO 8859-1
+	# 5  <U+2168>         IX         output is NFKC, will match #1
+	# 6  <U+0007>                    Error - prohibited character
+	# 7  <U+0627><U+0031>            Error - bidirectional check
+
+	# Create test roles.
+	$node->safe_psql('postgres',
+"SET password_encryption='scram';
+ SET client_encoding='utf8';
+ CREATE ROLE saslpreptest1_role LOGIN PASSWORD 'IX';
+ CREATE ROLE saslpreptest4a_role LOGIN PASSWORD 'a';
+ CREATE ROLE saslpreptest4b_role LOGIN PASSWORD E'\\xc2\\xaa';
+ CREATE ROLE saslpreptest6_role LOGIN PASSWORD E'foo\\x07bar';
+ CREATE ROLE saslpreptest7_role LOGIN PASSWORD E'foo\\u0627\\u0031bar';
+");
+
+	# Require password from now on.
+	reset_pg_hba($node, 'scram');
+
+	# Check that #1 and #5 are treated the same as just 'IX'
+	test_login($node, 'saslpreptest1_role', "I\xc2\xadX", 0);
+	test_login($node, 'saslpreptest1_role', "\xe2\x85\xa8", 0);
+
+	# but different from lower case 'ix'
+	test_login($node, 'saslpreptest1_role', "ix", 2);
+
+	# Check #4
+	test_login($node, 'saslpreptest4a_role', "a", 0);
+	test_login($node, 'saslpreptest4a_role', "\xc2\xaa", 0);
+	test_login($node, 'saslpreptest4b_role', "a", 0);
+	test_login($node, 'saslpreptest4b_role', "\xc2\xaa", 0);
+
+	# Check #6 and #7 - In PostgreSQL, contrary to the spec, if the password
+	# contains prohibited characters, we use it as is, without normalization.
+	test_login($node, 'saslpreptest6_role', "foo\x07bar", 0);
+	test_login($node, 'saslpreptest6_role', "foobar", 2);
+
+	test_login($node, 'saslpreptest7_role', "foo\xd8\xa71bar", 0);
+	test_login($node, 'saslpreptest7_role', "foo1\xd8\xa7bar", 2);
+	test_login($node, 'saslpreptest7_role', "foobar", 2);
+}