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_GETLINE   1
  47 #define HAVE_UNSETENV  1
  48 #define HAVE_SETENV    1
  49 #endif
  50
  51 /***************************************************************************/
  52 #if defined(__NetBSD__)
  53 #define HAVE_SA_LEN 1
  54
  55 #define HAVE_VASPRINTF 1
  56 #define HAVE_ASPRINTF  1
  57 #define HAVE_FGETLN    1
  58 #define HAVE_UNSETENV  1
  59 #define HAVE_SETENV    1
  60 #endif
  61
  62 /***************************************************************************/
  63 #if defined(__OpenBSD__)
  64 #define HAVE_SA_LEN 1
  65 #define NEED_IPLEN_FIX 1
  66 #define NEW_TUN 1
  67
  68 #define HAVE_VASPRINTF 1
  69 #define HAVE_ASPRINTF  1
  70 #define HAVE_FGETLN    1
  71 #define HAVE_UNSETENV  1
  72 #define HAVE_SETENV    1
  73 #endif
  74
  75 /***************************************************************************/
  76 #if defined(__FreeBSD_kernel__)
  77 #define HAVE_SA_LEN 1
  78 #endif
  79
  80 /***************************************************************************/
  81 #if defined(__FreeBSD__)
  82 #define HAVE_SA_LEN 1
  83
  84 #define HAVE_VASPRINTF 1
  85 #define HAVE_ASPRINTF  1
  86 #define HAVE_FGETLN    1
  87 #define HAVE_UNSETENV  1
  88 #define HAVE_SETENV    1
  89 #endif
  90
  91 /***************************************************************************/
  92 #if defined(__DragonFly__)
  93 #define HAVE_SA_LEN 1
  94
  95 #define HAVE_VASPRINTF 1
  96 #define HAVE_ASPRINTF  1
  97 #define HAVE_FGETLN    1
  98 #define HAVE_UNSETENV  1
  99 #define HAVE_SETENV    1
 100 #endif
 101
 102 /***************************************************************************/
 103 #if defined(__APPLE__)
 104 #define HAVE_SA_LEN 1
 105 #define NEED_IPLEN_FIX 1
 106
 107 #define HAVE_VASPRINTF 1
 108 #define HAVE_ASPRINTF  1
 109 #define HAVE_FGETLN    1
 110 #define HAVE_UNSETENV  1
 111 #define HAVE_SETENV    1
 112 #if (__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__-0) >= 1070
 113 #define HAVE_GETLINE 1
 114 #endif
 115 #endif
 116
 117 /***************************************************************************/
 118 #if defined(__sun__)
 119 #define NEED_IPLEN_FIX 1
 120
 121 #ifndef IPPROTO_ESP
 122 #define IPPROTO_ESP 50
 123 #endif
 124
 125 #define getpass(prompt) getpassphrase(prompt)
 126
 127 /* where is this defined? */
 128 #include <sys/socket.h>
 129 const char *inet_ntop(int af, const void *src, char *dst, size_t cnt);
 130 #endif
 131 /***************************************************************************/
 132 #if defined (__SKYOS__)
 133 #define HAVE_UNSETENV  1
 134
 135 #ifndef IPPROTO_ENCAP
 136 #define IPPROTO_ENCAP 4
 137 #endif
 138
 139 #ifndef IPPROTO_ESP
 140 #define IPPROTO_ESP 50
 141 #endif
 142 #endif
 143 /***************************************************************************/
 144 #if defined (__CYGWIN__)
 145 #define HAVE_VASPRINTF 1
 146 #define HAVE_ASPRINTF  1
 147 #define HAVE_GETLINE   1
 148 #define HAVE_FGETLN    1
 149 #define HAVE_UNSETENV  1
 150 #define HAVE_SETENV    1
 151
 152 #ifndef IPPROTO_ESP
 153 #define IPPROTO_ESP 50
 154 #endif
 155
 156 #ifndef IPPROTO_ENCAP
 157 #define IPPROTO_ENCAP 4
 158 #endif
 159
 160 #ifdef IFNAMSIZ
 161 #undef IFNAMSIZ
 162 #endif
 163 #define IFNAMSIZ 256
 164
 165 /*
 166  * At the moment the Cygwin environment does not have header files
 167  * for raw ethernet access, hence we need to define here what
 168  * is usually found in net/ethernet.h and netinet/if_ether.h
 169  */
 170
 171 #define ETH_ALEN 6
 172
 173 /* Ethernet header */
 174 struct ether_header
 175 {
 176         unsigned char ether_dhost[ETH_ALEN]; /* destination eth addr */
 177         unsigned char ether_shost[ETH_ALEN]; /* source ether addr    */
 178         unsigned short ether_type;           /* packet type ID field */
 179 } __attribute__ ((__packed__));
 180
 181 #define ETHERTYPE_IP  0x0800 /* IP  */
 182 #define ETHERTYPE_ARP 0x0806 /* ARP */
 183
 184 /* Common ARP header */
 185 struct arphdr {
 186         unsigned short ar_hrd; /* format of hardware address   */
 187         unsigned short ar_pro; /* format of protocol address   */
 188         unsigned char  ar_hln; /* length of hardware address   */
 189         unsigned char  ar_pln; /* length of protocol address   */
 190         unsigned short ar_op;  /* ARP opcode (command)         */
 191 };
 192
 193 /* Ethernet ARP header */
 194 struct ether_arp {
 195         struct arphdr ea_hdr;            /* fixed-size header */
 196         unsigned char arp_sha[ETH_ALEN]; /* sender hardware address */
 197         unsigned char arp_spa[4];        /* sender protocol address */
 198         unsigned char arp_tha[ETH_ALEN]; /* target hardware address */
 199         unsigned char arp_tpa[4];        /* target protocol address */
 200 };
 201 #define arp_hrd ea_hdr.ar_hrd
 202 #define arp_pro ea_hdr.ar_pro
 203 #define arp_hln ea_hdr.ar_hln
 204 #define arp_pln ea_hdr.ar_pln
 205 #define arp_op  ea_hdr.ar_op
 206
 207 #define ARPHRD_ETHER 1 /* Ethernet */
 208
 209 #define ARPOP_REQUEST 1 /* ARP request */
 210 #define ARPOP_REPLY   2 /* ARP reply   */
 211
 212 #endif
 213 /***************************************************************************/
 214
 215
 216 #ifndef IPDEFTTL
 217 #define IPDEFTTL 64 /* default ttl, from RFC 1340 */
 218 #endif
 219
 220 #ifndef IPPROTO_IPIP
 221 #define IPPROTO_IPIP IPPROTO_ENCAP
 222 #endif
 223
 224 #ifndef ETH_HLEN
 225 #define ETH_HLEN (sizeof(struct ether_header))
 226 #endif
 227
 228 #ifndef ETH_ALEN
 229 #define ETH_ALEN (sizeof(struct ether_addr))
 230 #endif
 231
 232 #ifndef HAVE_ERROR
 233 extern void error(int fd, int errorno, const char *fmt, ...);
 234 #endif
 235 #ifndef HAVE_GETLINE
 236 extern int getline(char **line, size_t * length, FILE * stream);
 237 #endif
 238 #ifndef HAVE_VASPRINTF
 239 #include <stdarg.h>
 240 extern int vasprintf(char **strp, const char *fmt, va_list ap);
 241 #endif
 242 #ifndef HAVE_ASPRINTF
 243 extern int asprintf(char **strp, const char *fmt, ...);
 244 #endif
 245 #ifndef HAVE_SETENV
 246 extern int setenv(const char *name, const char *value, int overwrite);
 247 #endif
 248 #ifndef HAVE_UNSETENV
 249 extern int unsetenv(const char *name);
 250 #endif
 251
 252
 253 #endif