git.m6w6.name Git - m6w6/libmemcached/blob - libtest/port.cc

   1 /*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
   2  *
   3  *  libtest
   4  *
   5  *  Copyright (C) 2011 Data Differential, http://datadifferential.com/
   6  *
   7  *  This library is free software; you can redistribute it and/or
   8  *  modify it under the terms of the GNU Lesser General Public
   9  *  License as published by the Free Software Foundation; either
  10  *  version 3 of the License, or (at your option) any later version.
  11  *
  12  *  This library is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  *  Lesser General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU Lesser General Public
  18  *  License along with this library; if not, write to the Free Software
  19  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  20  */
  21
  22 #include <libtest/common.h>
  23
  24 #include <cassert>
  25 #include <cstdlib>
  26 #include <cstring>
  27 #include <ctime>
  28 #include <fnmatch.h>
  29 #include <iostream>
  30 #include <sys/socket.h>
  31 #include <sys/stat.h>
  32 #include <sys/time.h>
  33 #include <sys/types.h>
  34 #include <sys/wait.h>
  35 #include <unistd.h>
  36
  37 #include <signal.h>
  38
  39 #include <libtest/stats.h>
  40 #include <libtest/signal.h>
  41
  42 #ifndef __INTEL_COMPILER
  43 #pragma GCC diagnostic ignored "-Wold-style-cast"
  44 #endif
  45
  46 using namespace libtest;
  47
  48 static in_port_t global_port= 0;
  49 static in_port_t global_max_port= 0;
  50
  51 namespace libtest {
  52
  53 in_port_t default_port()
  54 {
  55   return global_port;
  56 }
  57
  58 void set_default_port(in_port_t port)
  59 {
  60   global_port= port;
  61 }
  62
  63 in_port_t max_port()
  64 {
  65   return global_max_port;
  66 }
  67
  68 void set_max_port(in_port_t port)
  69 {
  70   if (port > global_max_port)
  71   {
  72     global_max_port= port;
  73   }
  74
  75   global_max_port= port;
  76 }
  77
  78 in_port_t get_free_port()
  79 {
  80   in_port_t ret_port= in_port_t(0);
  81   int sd;
  82   if ((sd= socket(AF_INET, SOCK_STREAM, 0)) != -1)
  83   {
  84     int optval= 1;
  85     if (setsockopt(sd, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof(optval)) != -1)
  86     {
  87       struct sockaddr_in sin;
  88       sin.sin_port= 0;
  89       sin.sin_addr.s_addr= 0;
  90       sin.sin_addr.s_addr= INADDR_ANY;
  91       sin.sin_family= AF_INET;
  92
  93       if (bind(sd, (struct sockaddr *)&sin,sizeof(struct sockaddr_in) ) != -1)
  94       {
  95         socklen_t addrlen= sizeof(sin);
  96
  97         if (listen(sd, 100) != -1)
  98         {
  99           if (getsockname(sd, (struct sockaddr *)&sin, &addrlen) != -1)
 100           {
 101             ret_port= sin.sin_port;
 102           }
 103         }
 104       }
 105     }
 106
 107     close(sd);
 108   }
 109
 110   return ret_port;
 111 }
 112
 113 } // namespace libtest