git.m6w6.name Git - m6w6/libmemcached/blob - libmemcachedutil/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 }