linux/lib/libfreeswan/internal.h

   1 /*
   2  * internal definitions for use within the library; do not export!
   3  * Copyright (C) 1998, 1999  Henry Spencer.
   4  *
   5  * This library is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU Library General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or (at your
   8  * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
   9  *
  10  * This library is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  12  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
  13  * License for more details.
  14  *
  15  * RCSID $Id: internal.h,v 1.1 2004/03/15 20:35:26 as Exp $
  16  */
  17
  18 #ifndef ABITS
  19 #define ABITS   32      /* bits in an IPv4 address */
  20 #endif
  21
  22 /* case-independent ASCII character equality comparison */
  23 #define CIEQ(c1, c2)    ( ((c1)&~040) == ((c2)&~040) )
  24
  25 /* syntax for passthrough SA */
  26 #ifndef PASSTHROUGHNAME
  27 #define PASSTHROUGHNAME "%passthrough"
  28 #define PASSTHROUGH4NAME        "%passthrough4"
  29 #define PASSTHROUGH6NAME        "%passthrough6"
  30 #define PASSTHROUGHIS   "tun0@0.0.0.0"
  31 #define PASSTHROUGH4IS  "tun0@0.0.0.0"
  32 #define PASSTHROUGH6IS  "tun0@::"
  33 #define PASSTHROUGHTYPE "tun"
  34 #define PASSTHROUGHSPI  0
  35 #define PASSTHROUGHDST  0
  36 #endif
  37
  38 /*
  39  * Headers, greatly complicated by stupid and unnecessary inconsistencies
  40  * between the user environment and the kernel environment.  These are done
  41  * here so that this mess need exist in only one place.
  42  *
  43  * It may seem like a -I or two could avoid most of this, but on closer
  44  * inspection it is not quite that easy.
  45  */
  46
  47 /* things that need to come from one place or the other, depending */
  48 #ifdef __KERNEL__
  49 #include <linux/types.h>
  50 #include <linux/socket.h>
  51 #include <linux/in.h>
  52 #include <linux/string.h>
  53 #include <linux/ctype.h>
  54 #define assert(foo)     /* nothing */
  55 #else
  56 #include <sys/types.h>
  57 #include <netinet/in.h>
  58 #include <string.h>
  59 #include <ctype.h>
  60 #include <assert.h>
  61 #endif
  62
  63 /* things that exist only in userland */
  64 #ifndef __KERNEL__
  65
  66 /* You'd think this would be okay in the kernel too -- it's just a */
  67 /* bunch of constants -- but no, in RH5.1 it screws up other things. */
  68 /* (Credit:  Mike Warfield tracked this problem down.  Thanks Mike!) */
  69 /* Fortunately, we don't need it in the kernel subset of the library. */
  70 #include <limits.h>
  71
  72 /* header files for things that should never be called in kernel */
  73 #include <netdb.h>
  74
  75 /* memory allocation, currently user-only, macro-ized just in case */
  76 #include <stdlib.h>
  77 #define MALLOC(n)       malloc(n)
  78 #define FREE(p)         free(p)
  79
  80 #endif /* __KERNEL__ */
  81