Include SSL compression status in psql banner and connection logging

Both the psql banner and the connection logging already included
SSL status, cipher and bitlength, this adds the information about
compression being on or off.

src/backend/utils/init/postinit.c

@@ -234,8 +234,9 @@ PerformAuthentication(Port *port)
 #ifdef USE_SSL
 			if (port->ssl)
 				ereport(LOG,
-						(errmsg("replication connection authorized: user=%s SSL enabled (protocol=%s, cipher=%s)",
-								port->user_name, SSL_get_version(port->ssl), SSL_get_cipher(port->ssl))));
+						(errmsg("replication connection authorized: user=%s SSL enabled (protocol=%s, cipher=%s, compression=%s)",
+								port->user_name, SSL_get_version(port->ssl), SSL_get_cipher(port->ssl),
+								SSL_get_current_compression(port->ssl) ? _("on") : _("off"))));
 			else
 #endif
 				ereport(LOG,
@@ -247,8 +248,9 @@ PerformAuthentication(Port *port)
 #ifdef USE_SSL
 			if (port->ssl)
 				ereport(LOG,
-						(errmsg("connection authorized: user=%s database=%s SSL enabled (protocol=%s, cipher=%s)",
-								port->user_name, port->database_name, SSL_get_version(port->ssl), SSL_get_cipher(port->ssl))));
+						(errmsg("connection authorized: user=%s database=%s SSL enabled (protocol=%s, cipher=%s, compression=%s)",
+								port->user_name, port->database_name, SSL_get_version(port->ssl), SSL_get_cipher(port->ssl),
+								SSL_get_current_compression(port->ssl) ? _("on") : _("off"))));
 			else
 #endif
 				ereport(LOG,

src/bin/psql/command.c

@@ -1800,8 +1800,9 @@ printSSLInfo(void)
 		return;					/* no SSL */
 
 	SSL_get_cipher_bits(ssl, &sslbits);
-	printf(_("SSL connection (protocol: %s, cipher: %s, bits: %d)\n"),
-		   SSL_get_version(ssl), SSL_get_cipher(ssl), sslbits);
+	printf(_("SSL connection (protocol: %s, cipher: %s, bits: %d, compression: %s)\n"),
+		   SSL_get_version(ssl), SSL_get_cipher(ssl), sslbits,
+		   SSL_get_current_compression(ssl) ? _("on") : _("off"));
 #else
 
 	/*