source4/lib/util/util_sock.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Samba utility functions
   4    Copyright (C) Andrew Tridgell 1992-1998
   5    Copyright (C) Tim Potter      2000-2001
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program 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
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22 #include "includes.h"
  23 #include "system/network.h"
  24
  25 enum SOCK_OPT_TYPES {OPT_BOOL,OPT_INT,OPT_ON};
  26
  27 static const struct {
  28         const char *name;
  29         int level;
  30         int option;
  31         int value;
  32         int opttype;
  33 } socket_options[] = {
  34   {"SO_KEEPALIVE",      SOL_SOCKET,    SO_KEEPALIVE,    0,                 OPT_BOOL},
  35   {"SO_REUSEADDR",      SOL_SOCKET,    SO_REUSEADDR,    0,                 OPT_BOOL},
  36   {"SO_BROADCAST",      SOL_SOCKET,    SO_BROADCAST,    0,                 OPT_BOOL},
  37 #ifdef TCP_NODELAY
  38   {"TCP_NODELAY",       IPPROTO_TCP,   TCP_NODELAY,     0,                 OPT_BOOL},
  39 #endif
  40 #ifdef IPTOS_LOWDELAY
  41   {"IPTOS_LOWDELAY",    IPPROTO_IP,    IP_TOS,          IPTOS_LOWDELAY,    OPT_ON},
  42 #endif
  43 #ifdef IPTOS_THROUGHPUT
  44   {"IPTOS_THROUGHPUT",  IPPROTO_IP,    IP_TOS,          IPTOS_THROUGHPUT,  OPT_ON},
  45 #endif
  46 #ifdef SO_REUSEPORT
  47   {"SO_REUSEPORT",      SOL_SOCKET,    SO_REUSEPORT,    0,                 OPT_BOOL},
  48 #endif
  49 #ifdef SO_SNDBUF
  50   {"SO_SNDBUF",         SOL_SOCKET,    SO_SNDBUF,       0,                 OPT_INT},
  51 #endif
  52 #ifdef SO_RCVBUF
  53   {"SO_RCVBUF",         SOL_SOCKET,    SO_RCVBUF,       0,                 OPT_INT},
  54 #endif
  55 #ifdef SO_SNDLOWAT
  56   {"SO_SNDLOWAT",       SOL_SOCKET,    SO_SNDLOWAT,     0,                 OPT_INT},
  57 #endif
  58 #ifdef SO_RCVLOWAT
  59   {"SO_RCVLOWAT",       SOL_SOCKET,    SO_RCVLOWAT,     0,                 OPT_INT},
  60 #endif
  61 #ifdef SO_SNDTIMEO
  62   {"SO_SNDTIMEO",       SOL_SOCKET,    SO_SNDTIMEO,     0,                 OPT_INT},
  63 #endif
  64 #ifdef SO_RCVTIMEO
  65   {"SO_RCVTIMEO",       SOL_SOCKET,    SO_RCVTIMEO,     0,                 OPT_INT},
  66 #endif
  67   {NULL,0,0,0,0}};
  68
  69
  70 /****************************************************************************
  71  Set user socket options.
  72 ****************************************************************************/
  73 void set_socket_options(int fd, const char *options)
  74 {
  75         const char **options_list = str_list_make(NULL, options, " \t,");
  76         int j;
  77
  78         if (!options_list)
  79                 return;
  80
  81         for (j = 0; options_list[j]; j++) {
  82                 const char *tok = options_list[j];
  83                 int ret=0,i;
  84                 int value = 1;
  85                 char *p;
  86                 BOOL got_value = False;
  87
  88                 if ((p = strchr_m(tok,'='))) {
  89                         *p = 0;
  90                         value = atoi(p+1);
  91                         got_value = True;
  92                 }
  93
  94                 for (i=0;socket_options[i].name;i++)
  95                         if (strequal(socket_options[i].name,tok))
  96                                 break;
  97
  98                 if (!socket_options[i].name) {
  99                         DEBUG(0,("Unknown socket option %s\n",tok));
 100                         continue;
 101                 }
 102
 103                 switch (socket_options[i].opttype) {
 104                 case OPT_BOOL:
 105                 case OPT_INT:
 106                         ret = setsockopt(fd,socket_options[i].level,
 107                                                 socket_options[i].option,(char *)&value,sizeof(int));
 108                         break;
 109
 110                 case OPT_ON:
 111                         if (got_value)
 112                                 DEBUG(0,("syntax error - %s does not take a value\n",tok));
 113
 114                         {
 115                                 int on = socket_options[i].value;
 116                                 ret = setsockopt(fd,socket_options[i].level,
 117                                                         socket_options[i].option,(char *)&on,sizeof(int));
 118                         }
 119                         break;
 120                 }
 121
 122                 if (ret != 0)
 123                         DEBUG(0,("Failed to set socket option %s (Error %s)\n",tok, strerror(errno) ));
 124         }
 125
 126         talloc_free(options_list);
 127 }
 128