git.m6w6.name Git - awesomized/libmemcached/blob - libmemcached/util/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 <libmemcached/common.h>
  41 #include <libmemcached/memcached_util.h>
  42
  43 bool libmemcached_util_ping(const char *hostname, in_port_t port, memcached_return_t *ret)
  44 {
  45   memcached_return_t unused;
  46   if (not ret)
  47     ret= &unused;
  48
  49   memcached_st *memc_ptr= memcached_create(NULL);
  50   if (not memc_ptr)
  51   {
  52     *ret= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
  53     return false;
  54   }
  55
  56   memcached_return_t rc= memcached_server_add(memc_ptr, hostname, port);
  57   if (memcached_success(rc))
  58   {
  59     rc= memcached_version(memc_ptr);
  60   }
  61
  62   if (memcached_failed(rc) and rc == MEMCACHED_SOME_ERRORS)
  63   {
  64     memcached_server_instance_st instance=
  65       memcached_server_instance_by_position(memc_ptr, 0);
  66
  67     assert_msg(instance and instance->error_messages, " ");
  68     if (instance and instance->error_messages)
  69     {
  70       rc= memcached_server_error_return(instance);
  71     }
  72   }
  73   memcached_free(memc_ptr);
  74
  75   *ret= rc;
  76
  77   return memcached_success(rc);
  78 }
  79
  80 bool libmemcached_util_ping2(const char *hostname, in_port_t port, const char *username, const char *password,  memcached_return_t *ret)
  81 {
  82   if (username == NULL)
  83   {
  84     return libmemcached_util_ping(hostname, port, ret);
  85   }
  86
  87   memcached_return_t unused;
  88   if (not ret)
  89     ret= &unused;
  90
  91   if (LIBMEMCACHED_WITH_SASL_SUPPORT == 0)
  92   {
  93     *ret= MEMCACHED_NOT_SUPPORTED;
  94     return false;
  95   }
  96
  97   memcached_st *memc_ptr= memcached_create(NULL);
  98   if (not memc_ptr)
  99   {
 100     *ret= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
 101     return false;
 102   }
 103
 104   if (memcached_failed(*ret= memcached_set_sasl_auth_data(memc_ptr, username, password)))
 105   {
 106     memcached_free(memc_ptr);
 107     return false;
 108   }
 109
 110   memcached_return_t rc= memcached_server_add(memc_ptr, hostname, port);
 111   if (memcached_success(rc))
 112   {
 113     rc= memcached_version(memc_ptr);
 114   }
 115
 116   if (memcached_failed(rc) and rc == MEMCACHED_SOME_ERRORS)
 117   {
 118     memcached_server_instance_st instance=
 119       memcached_server_instance_by_position(memc_ptr, 0);
 120
 121     assert_msg(instance and instance->error_messages, " ");
 122     if (instance and instance->error_messages)
 123     {
 124       rc= memcached_server_error_return(instance);
 125     }
 126   }
 127   memcached_free(memc_ptr);
 128
 129   *ret= rc;
 130
 131   return memcached_success(rc);
 132 }