lib/tun.h: Remove non-endian-safe redefinition of IP header
We can simply use 'struct iphdr' from netinet/ip.h to achieve the same goal (and be portable). Change-Id: Ieece22e127dc14a7ffdc3b05656628989ad00b32
This commit is contained in:
parent
d12eab9c4e
commit
63ebccdfe3
|
@ -112,6 +112,12 @@ AC_EGREP_HEADER(rt_msghdr, net/route.h,
|
|||
AC_DEFINE([HAVE_RT_MSGHDR])],
|
||||
AC_MSG_RESULT(no))
|
||||
|
||||
AC_MSG_CHECKING(whether struct iphdr exists)
|
||||
AH_TEMPLATE(HAVE_IPHDR)
|
||||
AC_EGREP_HEADER(struct iphdr, netinet/ip.h,
|
||||
[AC_MSG_RESULT(yes)
|
||||
AC_DEFINE([HAVE_IPHDR])],
|
||||
AC_MSG_RESULT(no))
|
||||
|
||||
# Checks for library functions.
|
||||
AC_PROG_GCC_TRADITIONAL
|
||||
|
|
|
@ -34,6 +34,7 @@
|
|||
#include <sys/types.h>
|
||||
#include <sys/socket.h>
|
||||
#include <netinet/in.h>
|
||||
#include <netinet/ip.h>
|
||||
#include <arpa/inet.h>
|
||||
#include <sys/wait.h>
|
||||
#include <sys/stat.h>
|
||||
|
@ -43,6 +44,7 @@
|
|||
#include <sys/socket.h>
|
||||
#include <sys/ioctl.h>
|
||||
#include <net/if.h>
|
||||
#include <net/if.h>
|
||||
|
||||
#include <errno.h>
|
||||
|
||||
|
@ -221,13 +223,13 @@ int cb_tun_ind(struct tun_t *tun, void *pack, unsigned len)
|
|||
{
|
||||
struct ippoolm_t *ipm;
|
||||
struct in46_addr dst;
|
||||
struct tun_packet_t *iph = (struct tun_packet_t *)pack;
|
||||
struct iphdr *iph = (struct iphdr *)pack;
|
||||
|
||||
if (iph->ver == 4) {
|
||||
if (iph->version == 4) {
|
||||
if (len < sizeof(*iph) || len < 4*iph->ihl)
|
||||
return -1;
|
||||
dst.len = 4;
|
||||
dst.v4.s_addr = iph->dst;
|
||||
dst.v4.s_addr = iph->daddr;
|
||||
} else {
|
||||
LOGP(DGGSN, LOGL_NOTICE, "non-IPv4 packet received from tun\n");
|
||||
return -1;
|
||||
|
|
40
lib/tun.h
40
lib/tun.h
|
@ -17,21 +17,31 @@
|
|||
#define TUN_ADDRSIZE 128
|
||||
#define TUN_NLBUFSIZE 1024
|
||||
|
||||
struct tun_packet_t {
|
||||
unsigned int ver:4;
|
||||
unsigned int ihl:4;
|
||||
unsigned int dscp:6;
|
||||
unsigned int ecn:2;
|
||||
unsigned int length:16;
|
||||
unsigned int id:16;
|
||||
unsigned int flags:3;
|
||||
unsigned int fragment:13;
|
||||
unsigned int ttl:8;
|
||||
unsigned int protocol:8;
|
||||
unsigned int check:16;
|
||||
unsigned int src:32;
|
||||
unsigned int dst:32;
|
||||
};
|
||||
#include "config.h"
|
||||
#ifndef HAVE_IPHDR
|
||||
struct iphdr
|
||||
{
|
||||
#if __BYTE_ORDER == __LITTLE_ENDIAN
|
||||
unsigned int ihl:4;
|
||||
unsigned int version:4;
|
||||
#elif __BYTE_ORDER == __BIG_ENDIAN
|
||||
unsigned int version:4;
|
||||
unsigned int ihl:4;
|
||||
#else
|
||||
# error "Please fix <bits/endian.h>"
|
||||
#endif
|
||||
u_int8_t tos;
|
||||
u_int16_t tot_len;
|
||||
u_int16_t id;
|
||||
u_int16_t frag_off;
|
||||
u_int8_t ttl;
|
||||
u_int8_t protocol;
|
||||
u_int16_t check;
|
||||
u_int32_t saddr;
|
||||
u_int32_t daddr;
|
||||
/*The options start here. */
|
||||
};
|
||||
#endif /* !HAVE_IPHDR */
|
||||
|
||||
/* ***********************************************************
|
||||
* Information storage for each tun instance
|
||||
|
|
|
@ -29,6 +29,7 @@
|
|||
#include <sys/types.h>
|
||||
#include <sys/socket.h>
|
||||
#include <netinet/in.h>
|
||||
#include <netinet/ip.h>
|
||||
#include <arpa/inet.h>
|
||||
#include <sys/wait.h>
|
||||
#include <sys/stat.h>
|
||||
|
@ -1281,10 +1282,10 @@ int cb_tun_ind(struct tun_t *tun, void *pack, unsigned len)
|
|||
{
|
||||
struct iphash_t *ipm;
|
||||
struct in46_addr src;
|
||||
struct tun_packet_t *iph = (struct tun_packet_t *)pack;
|
||||
struct iphdr *iph = (struct iphdr *)pack;
|
||||
|
||||
src.len = 4;
|
||||
src.v4.s_addr = iph->src;
|
||||
src.v4.s_addr = iph->saddr;
|
||||
|
||||
if (ipget(&ipm, &src)) {
|
||||
printf("Dropping packet from invalid source address: %s\n",
|
||||
|
|
Loading…
Reference in New Issue