Fix bug #67563: mysqli compiled with mysqlnd does not take ipv6 adress as parameter

ext/mysqli/tests/bug67563.phpt

@@ -0,0 +1,40 @@
+--TEST--
+Fix bug #67563 (mysqli compiled with mysqlnd does not take ipv6 adress as parameter)
+--EXTENSIONS--
+mysqli
+--SKIPIF--
+<?php
+require_once 'connect.inc';
+
+if ($host !== '127.0.0.1')
+    die('skip local test');
+
+if (@stream_socket_client('udp://[::1]:8888') === false)
+    die('skip no IPv6 support 2');
+
+if (!$link = @my_mysqli_connect($host, $user, $passwd, $db, $port, $socket)) {
+    die(sprintf("SKIP Cannot connect to the server using host=%s, user=%s, passwd=***, dbname=%s, port=%s, socket=%s\n",
+        $host, $user, $db, $port, $socket));
+}
+?>
+--INI--
+max_execution_time=240
+--FILE--
+<?php
+require_once 'connect.inc';
+
+$hosts = ['::1', "[::1]:$port"];
+
+foreach ($hosts as $host) {
+    if (!$link = my_mysqli_connect($host, $user, $passwd, $db, $port, $socket)) {
+        printf("[001] Cannot connect to the server using host=%s, user=%s, passwd=%s dbname=%s, port=%s, socket=%s\n",
+            $host, $user, $passwd, $db, $port, $socket);
+    } else {
+        $link->close();
+    }
+}
+
+print "done!";
+?>
+--EXPECT--
+done!

ext/mysqlnd/mysqlnd_connection.c

@@ -513,6 +513,16 @@ MYSQLND_METHOD(mysqlnd_conn_data, connect_handshake)(MYSQLND_CONN_DATA * conn,
 }
 /* }}} */
 
+/* ipv6 addresses have at least two colons, which is how we can differentiate between domain names and addresses */
+static bool mysqlnd_fast_is_ipv6_address(const char *s)
+{
+	const char *first_colon = strchr(s, ':');
+	if (!first_colon) {
+		return false;
+	}
+	return strchr(first_colon + 1, ':') != NULL;
+}
+
 /* {{{ mysqlnd_conn_data::get_scheme */
 static MYSQLND_STRING
 MYSQLND_METHOD(mysqlnd_conn_data, get_scheme)(MYSQLND_CONN_DATA * conn, MYSQLND_CSTRING hostname, MYSQLND_CSTRING *socket_or_pipe, unsigned int port, bool * unix_socket, bool * named_pipe)
@@ -542,7 +552,13 @@ MYSQLND_METHOD(mysqlnd_conn_data, get_scheme)(MYSQLND_CONN_DATA * conn, MYSQLND_
 		if (!port) {
 			port = 3306;
 		}
-		transport.l = mnd_sprintf(&transport.s, 0, "tcp://%s:%u", hostname.s, port);
+
+		/* ipv6 addresses are in the format [address]:port */
+		if (hostname.s[0] != '[' && mysqlnd_fast_is_ipv6_address(hostname.s)) {
+			transport.l = mnd_sprintf(&transport.s, 0, "tcp://[%s]:%u", hostname.s, port);
+		} else {
+			transport.l = mnd_sprintf(&transport.s, 0, "tcp://%s:%u", hostname.s, port);
+		}
 	}
 	DBG_INF_FMT("transport=%s", transport.s? transport.s:"OOM");
 	DBG_RETURN(transport);