source4/lib/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 #include "pstring.h"
  25
  26
  27 enum SOCK_OPT_TYPES {OPT_BOOL,OPT_INT,OPT_ON};
  28
  29 typedef struct smb_socket_option {
  30         const char *name;
  31         int level;
  32         int option;
  33         int value;
  34         int opttype;
  35 } smb_socket_option;
  36
  37 static const smb_socket_option socket_options[] = {
  38   {"SO_KEEPALIVE",      SOL_SOCKET,    SO_KEEPALIVE,    0,                 OPT_BOOL},
  39   {"SO_REUSEADDR",      SOL_SOCKET,    SO_REUSEADDR,    0,                 OPT_BOOL},
  40   {"SO_BROADCAST",      SOL_SOCKET,    SO_BROADCAST,    0,                 OPT_BOOL},
  41 #ifdef TCP_NODELAY
  42   {"TCP_NODELAY",       IPPROTO_TCP,   TCP_NODELAY,     0,                 OPT_BOOL},
  43 #endif
  44 #ifdef IPTOS_LOWDELAY
  45   {"IPTOS_LOWDELAY",    IPPROTO_IP,    IP_TOS,          IPTOS_LOWDELAY,    OPT_ON},
  46 #endif
  47 #ifdef IPTOS_THROUGHPUT
  48   {"IPTOS_THROUGHPUT",  IPPROTO_IP,    IP_TOS,          IPTOS_THROUGHPUT,  OPT_ON},
  49 #endif
  50 #ifdef SO_REUSEPORT
  51   {"SO_REUSEPORT",      SOL_SOCKET,    SO_REUSEPORT,    0,                 OPT_BOOL},
  52 #endif
  53 #ifdef SO_SNDBUF
  54   {"SO_SNDBUF",         SOL_SOCKET,    SO_SNDBUF,       0,                 OPT_INT},
  55 #endif
  56 #ifdef SO_RCVBUF
  57   {"SO_RCVBUF",         SOL_SOCKET,    SO_RCVBUF,       0,                 OPT_INT},
  58 #endif
  59 #ifdef SO_SNDLOWAT
  60   {"SO_SNDLOWAT",       SOL_SOCKET,    SO_SNDLOWAT,     0,                 OPT_INT},
  61 #endif
  62 #ifdef SO_RCVLOWAT
  63   {"SO_RCVLOWAT",       SOL_SOCKET,    SO_RCVLOWAT,     0,                 OPT_INT},
  64 #endif
  65 #ifdef SO_SNDTIMEO
  66   {"SO_SNDTIMEO",       SOL_SOCKET,    SO_SNDTIMEO,     0,                 OPT_INT},
  67 #endif
  68 #ifdef SO_RCVTIMEO
  69   {"SO_RCVTIMEO",       SOL_SOCKET,    SO_RCVTIMEO,     0,                 OPT_INT},
  70 #endif
  71   {NULL,0,0,0,0}};
  72
  73
  74 /****************************************************************************
  75  Set user socket options.
  76 ****************************************************************************/
  77 void set_socket_options(int fd, const char *options)
  78 {
  79         fstring tok;
  80
  81         while (next_token(&options,tok," \t,", sizeof(tok))) {
  82                 int ret=0,i;
  83                 int value = 1;
  84                 char *p;
  85                 BOOL got_value = False;
  86
  87                 if ((p = strchr_m(tok,'='))) {
  88                         *p = 0;
  89                         value = atoi(p+1);
  90                         got_value = True;
  91                 }
  92
  93                 for (i=0;socket_options[i].name;i++)
  94                         if (strequal(socket_options[i].name,tok))
  95                                 break;
  96
  97                 if (!socket_options[i].name) {
  98                         DEBUG(0,("Unknown socket option %s\n",tok));
  99                         continue;
 100                 }
 101
 102                 switch (socket_options[i].opttype) {
 103                 case OPT_BOOL:
 104                 case OPT_INT:
 105                         ret = setsockopt(fd,socket_options[i].level,
 106                                                 socket_options[i].option,(char *)&value,sizeof(int));
 107                         break;
 108
 109                 case OPT_ON:
 110                         if (got_value)
 111                                 DEBUG(0,("syntax error - %s does not take a value\n",tok));
 112
 113                         {
 114                                 int on = socket_options[i].value;
 115                                 ret = setsockopt(fd,socket_options[i].level,
 116                                                         socket_options[i].option,(char *)&on,sizeof(int));
 117                         }
 118                         break;
 119                 }
 120
 121                 if (ret != 0)
 122                         DEBUG(0,("Failed to set socket option %s (Error %s)\n",tok, strerror(errno) ));
 123         }
 124 }
 125