1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
/* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Libmemcached library
*
* Copyright (C) 2011 Data Differential, http://datadifferential.com/
* Copyright (C) 2010 Brian Aker All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
* * The names of its contributors may not be used to endorse or
* promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Summary: connects to a host, and determines what its pid is
*
*/
#include <libmemcachedutil/common.h>
// Never look at the stat object directly.
pid_t libmemcached_util_getpid(const char *hostname, in_port_t port, memcached_return_t *ret)
{
pid_t pid= -1;
memcached_return_t unused;
if (ret == NULL)
{
ret= &unused;
}
memcached_st *memc_ptr= memcached_create(NULL);
if (memc_ptr == NULL)
{
*ret= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
return -1;
}
memcached_return_t rc= memcached_server_add(memc_ptr, hostname, port);
if (memcached_success(rc))
{
memcached_stat_st *stat= memcached_stat(memc_ptr, NULL, &rc);
if (memcached_success(rc) and stat and stat->pid != -1)
{
pid= stat->pid;
}
else if (memcached_success(rc))
{
rc= MEMCACHED_UNKNOWN_STAT_KEY; // Something went wrong if this happens
}
else if (rc == MEMCACHED_SOME_ERRORS) // Generic answer, we will now find the specific reason (if one exists)
{
const memcached_instance_st * instance= memcached_server_instance_by_position(memc_ptr, 0);
assert_msg(instance and memcached_server_error(instance), " ");
if (instance and memcached_server_error(instance))
{
rc= memcached_server_error_return(instance);
}
}
memcached_stat_free(memc_ptr, stat);
}
memcached_free(memc_ptr);
*ret= rc;
return pid;
}
pid_t libmemcached_util_getpid2(const char *hostname, in_port_t port, const char *username, const char *password, memcached_return_t *ret)
{
if (username == NULL)
{
return libmemcached_util_getpid(hostname, port, ret);
}
pid_t pid= -1;
memcached_return_t unused;
if (not ret)
ret= &unused;
if (libmemcached_has_feature(LIBMEMCACHED_FEATURE_HAS_SASL) == false)
{
*ret= MEMCACHED_NOT_SUPPORTED;
return pid;
}
memcached_st *memc_ptr= memcached_create(NULL);
if (not memc_ptr)
{
*ret= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
return -1;
}
if (memcached_failed(*ret= memcached_set_sasl_auth_data(memc_ptr, username, password)))
{
memcached_free(memc_ptr);
return false;
}
memcached_return_t rc= memcached_server_add(memc_ptr, hostname, port);
if (memcached_success(rc))
{
memcached_stat_st *stat= memcached_stat(memc_ptr, NULL, &rc);
if (memcached_success(rc) and stat and stat->pid != -1)
{
pid= stat->pid;
}
else if (memcached_success(rc))
{
rc= MEMCACHED_UNKNOWN_STAT_KEY; // Something went wrong if this happens
}
else if (rc == MEMCACHED_SOME_ERRORS) // Generic answer, we will now find the specific reason (if one exists)
{
const memcached_instance_st * instance=
memcached_server_instance_by_position(memc_ptr, 0);
#if 0
assert_msg(instance and instance->error_messages, " ");
#endif
if (instance and memcached_server_error(instance))
{
rc= memcached_server_error_return(instance);
}
}
memcached_stat_free(memc_ptr, stat);
}
memcached_free(memc_ptr);
*ret= rc;
return pid;
}
|
