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 (ret == NULL)
  46   {
  47     ret= &unused;
  48   }
  49
  50   memcached_st *memc_ptr= memcached_create(NULL);
  51   if (memc_ptr == NULL)
  52   {
  53     *ret= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
  54     return false;
  55   }
  56
  57   memcached_return_t rc= memcached_server_add(memc_ptr, hostname, port);
  58   if (memcached_success(rc))
  59   {
  60     rc= memcached_version(memc_ptr);
  61   }
  62
  63   if (memcached_failed(rc) and rc == MEMCACHED_SOME_ERRORS)
  64   {
  65     memcached_server_instance_st instance=
  66       memcached_server_instance_by_position(memc_ptr, 0);
  67
  68     assert_msg(instance and memcached_server_error(instance), " ");
  69     if (instance and memcached_server_error(instance))
  70     {
  71       rc= memcached_server_error_return(instance);
  72     }
  73   }
  74   memcached_free(memc_ptr);
  75
  76   *ret= rc;
  77
  78   return memcached_success(rc);
  79 }
  80
  81 bool libmemcached_util_ping2(const char *hostname, in_port_t port, const char *username, const char *password,  memcached_return_t *ret)
  82 {
  83   if (username == NULL)
  84   {
  85     return libmemcached_util_ping(hostname, port, ret);
  86   }
  87
  88   memcached_return_t unused;
  89   if (not ret)
  90     ret= &unused;
  91
  92   if (LIBMEMCACHED_WITH_SASL_SUPPORT == 0)
  93   {
  94     *ret= MEMCACHED_NOT_SUPPORTED;
  95     return false;
  96   }
  97
  98   memcached_st *memc_ptr= memcached_create(NULL);
  99   if (not memc_ptr)
 100   {
 101     *ret= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
 102     return false;
 103   }
 104
 105   if (memcached_failed(*ret= memcached_set_sasl_auth_data(memc_ptr, username, password)))
 106   {
 107     memcached_free(memc_ptr);
 108     return false;
 109   }
 110
 111   memcached_return_t rc= memcached_server_add(memc_ptr, hostname, port);
 112   if (memcached_success(rc))
 113   {
 114     rc= memcached_version(memc_ptr);
 115   }
 116
 117   if (memcached_failed(rc) and rc == MEMCACHED_SOME_ERRORS)
 118   {
 119     memcached_server_instance_st instance=
 120       memcached_server_instance_by_position(memc_ptr, 0);
 121
 122     assert_msg(instance and memcached_server_error(instance), " ");
 123     if (instance and memcached_server_error(instance))
 124     {
 125       rc= memcached_server_error_return(instance);
 126     }
 127   }
 128   memcached_free(memc_ptr);
 129
 130   *ret= rc;
 131
 132   return memcached_success(rc);
 133 }