git.m6w6.name Git - m6w6/libmemcached/blob - libmemcached/util/version.c

   1 /* LibMemcached
   2  * Copyright (C) 2010 Brian Aker
   3  * All rights reserved.
   4  *
   5  * Use and distribution licensed under the BSD license.  See
   6  * the COPYING file in the parent directory for full text.
   7  *
   8  * Summary: connect to all hosts, and make sure they meet a minimum version
   9  *
  10  */
  11
  12 /* -*- Mode: C; tab-width: 2; c-basic-offset: 2; indent-tabs-mode: nil -*- */
  13 #include "libmemcached/common.h"
  14 #include "libmemcached/memcached_util.h"
  15
  16 struct local_context
  17 {
  18   uint8_t major_version;
  19   uint8_t minor_version;
  20   uint8_t micro_version;
  21
  22   bool truth;
  23 };
  24
  25 static memcached_return_t check_server_version(const memcached_st *ptr,
  26                                                const memcached_server_st *instance,
  27                                                void *context)
  28 {
  29   /* Do Nothing */
  30   struct local_context *check= (struct local_context *)context;
  31   (void)ptr;
  32
  33   if (instance->major_version != UINT8_MAX &&
  34       instance->major_version >= check->major_version &&
  35       instance->minor_version >= check->minor_version &&
  36       instance->micro_version >= check->micro_version )
  37   {
  38     return MEMCACHED_SUCCESS;
  39   }
  40
  41   check->truth= false;
  42
  43   return MEMCACHED_FAILURE;
  44 }
  45
  46 bool libmemcached_util_version_check(memcached_st *memc,
  47                                      uint8_t major_version,
  48                                      uint8_t minor_version,
  49                                      uint8_t micro_version)
  50 {
  51   memcached_server_fn callbacks[1];
  52   memcached_return_t rc= memcached_version(memc);
  53
  54   if (rc != MEMCACHED_SUCCESS)
  55     return false;
  56
  57   struct local_context check= { .major_version= major_version, .minor_version= minor_version, .micro_version= micro_version, .truth= true };
  58
  59   callbacks[0]= check_server_version;
  60   memcached_server_cursor(memc, callbacks, (void *)&check,  1);
  61
  62   return check.truth;
  63 }