82d891a9e090bbb6705cbda7192090731fd38159
[m6w6/libmemcached] / ping.cc
1 /* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
2 *
3 * Libmemcached library
4 *
5 * Copyright (C) 2011 Data Differential, http://datadifferential.com/
6 * Copyright (C) 2010 Brian Aker All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are
10 * met:
11 *
12 * * Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * * Redistributions in binary form must reproduce the above
16 * copyright notice, this list of conditions and the following disclaimer
17 * in the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * * The names of its contributors may not be used to endorse or
21 * promote products derived from this software without specific prior
22 * written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
25 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
26 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
27 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
28 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
29 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
34 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 *
36 * Summary: connects to a host, and makes sure it is alive.
37 *
38 */
39
40 #include <libmemcachedutil/common.h>
41
42 bool libmemcached_util_ping(const char *hostname, in_port_t port, memcached_return_t *ret)
43 {
44 memcached_return_t unused;
45 if (not ret)
46 ret= &unused;
47
48 memcached_st *memc_ptr= memcached_create(NULL);
49 if (not memc_ptr)
50 {
51 *ret= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
52 return false;
53 }
54
55 memcached_return_t rc= memcached_server_add(memc_ptr, hostname, port);
56 if (memcached_success(rc))
57 {
58 rc= memcached_version(memc_ptr);
59 }
60
61 if (memcached_failed(rc) and rc == MEMCACHED_SOME_ERRORS)
62 {
63 memcached_server_instance_st instance=
64 memcached_server_instance_by_position(memc_ptr, 0);
65
66 assert_msg(instance and instance->error_messages, " ");
67 if (instance and instance->error_messages)
68 {
69 rc= memcached_server_error_return(instance);
70 }
71 }
72 memcached_free(memc_ptr);
73
74 *ret= rc;
75
76 return memcached_success(rc);
77 }
78
79 bool libmemcached_util_ping2(const char *hostname, in_port_t port, const char *username, const char *password, memcached_return_t *ret)
80 {
81 if (username == NULL)
82 {
83 return libmemcached_util_ping(hostname, port, ret);
84 }
85
86 memcached_return_t unused;
87 if (not ret)
88 ret= &unused;
89
90 if (LIBMEMCACHED_WITH_SASL_SUPPORT == 0)
91 {
92 *ret= MEMCACHED_NOT_SUPPORTED;
93 return false;
94 }
95
96 memcached_st *memc_ptr= memcached_create(NULL);
97 if (not memc_ptr)
98 {
99 *ret= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
100 return false;
101 }
102
103 if (memcached_failed(*ret= memcached_set_sasl_auth_data(memc_ptr, username, password)))
104 {
105 memcached_free(memc_ptr);
106 return false;
107 }
108
109 memcached_return_t rc= memcached_server_add(memc_ptr, hostname, port);
110 if (memcached_success(rc))
111 {
112 rc= memcached_version(memc_ptr);
113 }
114
115 if (memcached_failed(rc) and rc == MEMCACHED_SOME_ERRORS)
116 {
117 memcached_server_instance_st instance=
118 memcached_server_instance_by_position(memc_ptr, 0);
119
120 assert_msg(instance and instance->error_messages, " ");
121 if (instance and instance->error_messages)
122 {
123 rc= memcached_server_error_return(instance);
124 }
125 }
126 memcached_free(memc_ptr);
127
128 *ret= rc;
129
130 return memcached_success(rc);
131 }