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   1 /*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
   2  *
   3  *  Data Differential YATL (i.e. libtest)  library
   4  *
   5  *  Copyright (C) 2012 Data Differential, http://datadifferential.com/
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  23  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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  35  */
  36
  37 #include <config.h>
  38 #include <libtest/common.h>
  39
  40 #include <sys/types.h>
  41 #include <sys/socket.h>
  42 #include <netdb.h>
  43
  44 namespace libtest {
  45
  46 bool lookup(const char* host)
  47 {
  48   assert(host);
  49   bool success= false;
  50   struct addrinfo *addrinfo= NULL;
  51
  52   int limit= 5;
  53   while (limit--)
  54   {
  55     int ret;
  56     if ((ret= getaddrinfo(host, NULL, NULL, &(addrinfo))))
  57     {
  58       switch (ret)
  59       {
  60       case EAI_AGAIN:
  61         continue;
  62
  63       case EAI_NONAME:
  64       default:
  65         break;
  66       }
  67     }
  68     else
  69     {
  70       success= true;
  71       break;
  72     }
  73   }
  74
  75   freeaddrinfo(addrinfo);
  76
  77   return success;
  78 }
  79
  80
  81 bool check_dns()
  82 {
  83   if (lookup("exist.gearman.info") == false)
  84   {
  85     return false;
  86   }
  87
  88   if (lookup("does_not_exist.gearman.info")) // This should fail, if it passes,...
  89   {
  90     return false;
  91   }
  92
  93   return true;
  94 }
  95
  96 } // namespace libtest
  97