Fix searchpath and module location for pg_rewind and ssl TAP tests

The modules RewindTest.pm and ServerSetup.pm are really only useful for
TAP tests, so they really belong in the TAP test directories. In
addition, ServerSetup.pm is renamed to SSLServer.pm.

The test scripts have their own directories added to the search path so
that the relocated modules will be found, regardless of where the tests
are run from, even on modern perl where "." is no longer in the
searchpath.

Discussion: https://postgr.es/m/e4b0f366-269c-73c3-9c90-d9cb0f4db1f9@2ndQuadrant.com

Backpatch as appropriate to 9.5

1 files changed, 120 insertions, 0 deletions

diff --git a/src/test/ssl/t/SSLServer.pm b/src/test/ssl/t/SSLServer.pm
new file mode 100644
index 00000000000..6781fa04991
--- /dev/null
+++ b/src/test/ssl/t/SSLServer.pm
@@ -0,0 +1,120 @@
+# This module sets up a test server, for the SSL regression tests.
+#
+# The server is configured as follows:
+#
+# - SSL enabled, with the server certificate specified by argument to
+#   switch_server_cert function.
+# - ssl/root+client_ca.crt as the CA root for validating client certs.
+# - reject non-SSL connections
+# - a database called trustdb that lets anyone in
+# - another database called certdb that uses certificate authentication, ie.
+#   the client must present a valid certificate signed by the client CA
+# - two users, called ssltestuser and anotheruser.
+#
+# The server is configured to only accept connections from localhost. If you
+# want to run the client from another host, you'll have to configure that
+# manually.
+package SSLServer;
+
+use strict;
+use warnings;
+use TestLib;
+use File::Basename;
+use File::Copy;
+use Test::More;
+
+use Exporter 'import';
+our @EXPORT = qw(
+  configure_test_server_for_ssl switch_server_cert
+);
+
+# Copy a set of files, taking into account wildcards
+sub copy_files
+{
+	my $orig = shift;
+	my $dest = shift;
+
+	my @orig_files = glob $orig;
+	foreach my $orig_file (@orig_files)
+	{
+		my $base_file = basename($orig_file);
+		copy($orig_file, "$dest/$base_file")
+		  or die "Could not copy $orig_file to $dest";
+	}
+}
+
+sub configure_test_server_for_ssl
+{
+	my $tempdir = $_[0];
+	my $serverhost = $_[1];
+
+	# Create test users and databases
+	psql 'postgres', "CREATE USER ssltestuser";
+	psql 'postgres', "CREATE USER anotheruser";
+	psql 'postgres', "CREATE DATABASE trustdb";
+	psql 'postgres', "CREATE DATABASE certdb";
+
+	# enable logging etc.
+	open CONF, ">>$tempdir/pgdata/postgresql.conf";
+	print CONF "fsync=off\n";
+	print CONF "log_connections=on\n";
+	print CONF "log_hostname=on\n";
+	print CONF "listen_addresses='$serverhost'\n";
+	print CONF "log_statement=all\n";
+
+	# enable SSL and set up server key
+	print CONF "include 'sslconfig.conf'";
+
+	close CONF;
+
+# Copy all server certificates and keys, and client root cert, to the data dir
+	copy_files("ssl/server-*.crt", "$tempdir/pgdata");
+	copy_files("ssl/server-*.key", "$tempdir/pgdata");
+	chmod(0600, glob "$tempdir/pgdata/server-*.key") or die $!;
+	copy_files("ssl/root+client_ca.crt", "$tempdir/pgdata");
+	copy_files("ssl/root_ca.crt", "$tempdir/pgdata");
+	copy_files("ssl/root+client.crl",    "$tempdir/pgdata");
+
+  # Only accept SSL connections from localhost. Our tests don't depend on this
+  # but seems best to keep it as narrow as possible for security reasons.
+  #
+  # When connecting to certdb, also check the client certificate.
+	open HBA, ">$tempdir/pgdata/pg_hba.conf";
+	print HBA
+"# TYPE  DATABASE        USER            ADDRESS                 METHOD\n";
+	print HBA
+"hostssl trustdb         ssltestuser     127.0.0.1/32            trust\n";
+	print HBA
+"hostssl trustdb         ssltestuser     ::1/128                 trust\n";
+	print HBA
+"hostssl certdb          ssltestuser     127.0.0.1/32            cert\n";
+	print HBA
+"hostssl certdb          ssltestuser     ::1/128                 cert\n";
+	close HBA;
+}
+
+# Change the configuration to use given server cert file, and restart
+# the server so that the configuration takes effect.
+sub switch_server_cert
+{
+	my $tempdir  = $_[0];
+	my $certfile = $_[1];
+	my $cafile = $_[2] || "root+client_ca";
+
+	diag "Restarting server with certfile \"$certfile\" and cafile \"$cafile\"...";
+
+	open SSLCONF, ">$tempdir/pgdata/sslconfig.conf";
+	print SSLCONF "ssl=on\n";
+	print SSLCONF "ssl_ca_file='$cafile.crt'\n";
+	print SSLCONF "ssl_cert_file='$certfile.crt'\n";
+	print SSLCONF "ssl_key_file='$certfile.key'\n";
+	print SSLCONF "ssl_crl_file='root+client.crl'\n";
+	close SSLCONF;
+
+   # Stop and restart server to reload the new config. We cannot use
+   # restart_test_server() because that overrides listen_addresses to only all
+   # Unix domain socket connections.
+
+	system_or_bail 'pg_ctl', 'stop', '-D', "$tempdir/pgdata";
+	system_or_bail 'pg_ctl', 'start', '-D', "$tempdir/pgdata", '-w';
+}