1 /*
2 * Copyright (C) Tildeslash Ltd. All rights reserved.
3 *
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU Affero General Public License version 3.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
11 *
12 * You should have received a copy of the GNU Affero General Public License
13 * along with this program. If not, see <http://www.gnu.org/licenses/>.
14 *
15 * In addition, as a special exception, the copyright holders give
16 * permission to link the code of portions of this program with the
17 * OpenSSL library under certain conditions as described in each
18 * individual source file, and distribute linked combinations
19 * including the two.
20 *
21 * You must obey the GNU Affero General Public License in all respects
22 * for all of the code used other than OpenSSL.
23 */
24
25 #include "config.h"
26
27 #include "protocol.h"
28
29 // libmonit
30 #include "exceptions/IOException.h"
31 #include "exceptions/ProtocolException.h"
32
33
34 /* --------------------------------------------------------------- Public */
35
36
37 /**
38 * Simple redis RESP protocol ping test:
39 *
40 * 1. send a PING command
41 * 2. expect a PONG response
42 * 3. send a QUIT command
43 *
44 * @see http://redis.io/topics/protocol
45 *
46 * @file
47 */
check_redis(Socket_T socket)48 void check_redis(Socket_T socket) {
49 ASSERT(socket);
50 char buf[STRLEN];
51
52 if (Socket_print(socket, "*1\r\n$4\r\nPING\r\n") < 0)
53 THROW(IOException, "REDIS: PING command error -- %s", STRERROR);
54 if (! Socket_readLine(socket, buf, sizeof(buf)))
55 THROW(IOException, "REDIS: PING response error -- %s", STRERROR);
56 Str_chomp(buf);
57 if (! Str_isEqual(buf, "+PONG") && ! Str_startsWith(buf, "-NOAUTH")) // We accept authentication error (-NOAUTH Authentication required): redis responded to request, but requires authentication => we assume it works
58 THROW(ProtocolException, "REDIS: PING error -- %s", buf);
59 if (Socket_print(socket, "*1\r\n$4\r\nQUIT\r\n") < 0)
60 THROW(IOException, "REDIS: QUIT command error -- %s", STRERROR);
61 }
62
63