sysdep.h

   1 #ifndef __SYSDEP_H__
   2 #define __SYSDEP_H__
   3
   4 /*
   5  * Different systems define different macros.
   6  * For vpnc, this list should be used as
   7  * reference:
   8  *
   9  * __linux__
  10  * __NetBSD__
  11  * __OpenBSD__
  12  * __FreeBSD__
  13  * __DragonFly__
  14  * __APPLE__      Darwin / MacOS X
  15  * __sun__        SunOS / Solaris
  16  * __CYGWIN__
  17  * __SKYOS__
  18  *
  19  */
  20
  21 #include <sys/types.h>
  22 #include <sys/socket.h>
  23 #include <netinet/in.h>
  24
  25 #if !defined(__CYGWIN__)
  26 #include <net/if.h>
  27 #include <net/if_arp.h>
  28 #include <netinet/if_ether.h>
  29 #endif
  30
  31 #include "config.h"
  32
  33 int tun_open(char *dev, enum if_mode_enum mode);
  34 int tun_close(int fd, char *dev);
  35 int tun_write(int fd, unsigned char *buf, int len);
  36 int tun_read(int fd, unsigned char *buf, int len);
  37 int tun_get_hwaddr(int fd, char *dev, uint8_t *hwaddr);
  38
  39 /***************************************************************************/
  40 #if defined(__linux__) || defined(__GLIBC__)
  41 #include <error.h>
  42
  43 #define HAVE_VASPRINTF 1
  44 #define HAVE_ASPRINTF  1
  45 #define HAVE_ERROR     1
  46 #define HAVE_UNSETENV  1
  47 #define HAVE_SETENV    1
  48 #endif
  49
  50 /***************************************************************************/
  51 #if defined(__NetBSD__)
  52 #define HAVE_SA_LEN 1
  53
  54 #define HAVE_VASPRINTF 1
  55 #define HAVE_ASPRINTF  1
  56 #define HAVE_UNSETENV  1
  57 #define HAVE_SETENV    1
  58 #endif
  59
  60 /***************************************************************************/
  61 #if defined(__OpenBSD__)
  62 #define HAVE_SA_LEN 1
  63 #define NEED_IPLEN_FIX 1
  64 #define NEW_TUN 1
  65
  66 #define HAVE_VASPRINTF 1
  67 #define HAVE_ASPRINTF  1
  68 #define HAVE_UNSETENV  1
  69 #define HAVE_SETENV    1
  70 #endif
  71
  72 /***************************************************************************/
  73 #if defined(__FreeBSD_kernel__)
  74 #define HAVE_SA_LEN 1
  75 #endif
  76
  77 /***************************************************************************/
  78 #if defined(__FreeBSD__)
  79 #define HAVE_SA_LEN 1
  80
  81 #define HAVE_VASPRINTF 1
  82 #define HAVE_ASPRINTF  1
  83 #define HAVE_UNSETENV  1
  84 #define HAVE_SETENV    1
  85 #endif
  86
  87 /***************************************************************************/
  88 #if defined(__DragonFly__)
  89 #define HAVE_SA_LEN 1
  90
  91 #define HAVE_VASPRINTF 1
  92 #define HAVE_ASPRINTF  1
  93 #define HAVE_UNSETENV  1
  94 #define HAVE_SETENV    1
  95 #endif
  96
  97 /***************************************************************************/
  98 #if defined(__APPLE__)
  99 #define HAVE_SA_LEN 1
 100 #define NEED_IPLEN_FIX 1
 101
 102 #define HAVE_VASPRINTF 1
 103 #define HAVE_ASPRINTF  1
 104 #define HAVE_UNSETENV  1
 105 #define HAVE_SETENV    1
 106 #if (__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__-0) >= 1070
 107 #endif
 108 #endif
 109
 110 /***************************************************************************/
 111 #if defined(__sun__)
 112 #define NEED_IPLEN_FIX 1
 113
 114 #ifndef IPPROTO_ESP
 115 #define IPPROTO_ESP 50
 116 #endif
 117
 118 /* where is this defined? */
 119 #include <sys/socket.h>
 120 const char *inet_ntop(int af, const void *src, char *dst, size_t cnt);
 121 #endif
 122 /***************************************************************************/
 123 #if defined (__SKYOS__)
 124 #define HAVE_UNSETENV  1
 125
 126 #ifndef IPPROTO_ENCAP
 127 #define IPPROTO_ENCAP 4
 128 #endif
 129
 130 #ifndef IPPROTO_ESP
 131 #define IPPROTO_ESP 50
 132 #endif
 133 #endif
 134 /***************************************************************************/
 135 #if defined (__CYGWIN__)
 136 #define HAVE_VASPRINTF 1
 137 #define HAVE_ASPRINTF  1
 138 #define HAVE_UNSETENV  1
 139 #define HAVE_SETENV    1
 140
 141 #ifndef IPPROTO_ESP
 142 #define IPPROTO_ESP 50
 143 #endif
 144
 145 #ifndef IPPROTO_ENCAP
 146 #define IPPROTO_ENCAP 4
 147 #endif
 148
 149 #ifdef IFNAMSIZ
 150 #undef IFNAMSIZ
 151 #endif
 152 #define IFNAMSIZ 256
 153
 154 /*
 155  * At the moment the Cygwin environment does not have header files
 156  * for raw ethernet access, hence we need to define here what
 157  * is usually found in net/ethernet.h and netinet/if_ether.h
 158  */
 159
 160 #define ETH_ALEN 6
 161
 162 /* Ethernet header */
 163 struct ether_header
 164 {
 165         unsigned char ether_dhost[ETH_ALEN]; /* destination eth addr */
 166         unsigned char ether_shost[ETH_ALEN]; /* source ether addr    */
 167         unsigned short ether_type;           /* packet type ID field */
 168 } __attribute__ ((__packed__));
 169
 170 #define ETHERTYPE_IP  0x0800 /* IP  */
 171 #define ETHERTYPE_ARP 0x0806 /* ARP */
 172
 173 /* Common ARP header */
 174 struct arphdr {
 175         unsigned short ar_hrd; /* format of hardware address   */
 176         unsigned short ar_pro; /* format of protocol address   */
 177         unsigned char  ar_hln; /* length of hardware address   */
 178         unsigned char  ar_pln; /* length of protocol address   */
 179         unsigned short ar_op;  /* ARP opcode (command)         */
 180 };
 181
 182 /* Ethernet ARP header */
 183 struct ether_arp {
 184         struct arphdr ea_hdr;            /* fixed-size header */
 185         unsigned char arp_sha[ETH_ALEN]; /* sender hardware address */
 186         unsigned char arp_spa[4];        /* sender protocol address */
 187         unsigned char arp_tha[ETH_ALEN]; /* target hardware address */
 188         unsigned char arp_tpa[4];        /* target protocol address */
 189 };
 190 #define arp_hrd ea_hdr.ar_hrd
 191 #define arp_pro ea_hdr.ar_pro
 192 #define arp_hln ea_hdr.ar_hln
 193 #define arp_pln ea_hdr.ar_pln
 194 #define arp_op  ea_hdr.ar_op
 195
 196 #define ARPHRD_ETHER 1 /* Ethernet */
 197
 198 #define ARPOP_REQUEST 1 /* ARP request */
 199 #define ARPOP_REPLY   2 /* ARP reply   */
 200
 201 #endif
 202 /***************************************************************************/
 203
 204
 205 #ifndef IPDEFTTL
 206 #define IPDEFTTL 64 /* default ttl, from RFC 1340 */
 207 #endif
 208
 209 #ifndef IPPROTO_IPIP
 210 #define IPPROTO_IPIP IPPROTO_ENCAP
 211 #endif
 212
 213 #ifndef ETH_HLEN
 214 #define ETH_HLEN (sizeof(struct ether_header))
 215 #endif
 216
 217 #ifndef ETH_ALEN
 218 #define ETH_ALEN (sizeof(struct ether_addr))
 219 #endif
 220
 221 #ifndef HAVE_ERROR
 222 extern void error(int fd, int errorno, const char *fmt, ...);
 223 #endif
 224 #ifndef HAVE_VASPRINTF
 225 #include <stdarg.h>
 226 extern int vasprintf(char **strp, const char *fmt, va_list ap);
 227 #endif
 228 #ifndef HAVE_ASPRINTF
 229 extern int asprintf(char **strp, const char *fmt, ...);
 230 #endif
 231 #ifndef HAVE_SETENV
 232 extern int setenv(const char *name, const char *value, int overwrite);
 233 #endif
 234 #ifndef HAVE_UNSETENV
 235 extern int unsetenv(const char *name);
 236 #endif
 237
 238
 239 #endif