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/**********************************************************
SixXS - Automatic IPv6 Connectivity Configuration Utility
***********************************************************
Copyright 2003-2005 SixXS - http://www.sixxs.net
***********************************************************
common/aiccu_linux.c - AICCU Linux Abstracted functions
***********************************************************
$Author: jeroen $
$Id: aiccu_linux.c,v 1.15 2007-01-15 12:18:58 jeroen Exp $
$Date: 2007-01-15 12:18:58 $
**********************************************************/
#include "aiccu.h"
bool aiccu_os_install(void)
{
/* Check if IPv6 support is available */
if (access("/proc/net/if_inet6", F_OK))
{
/* Doing the modprobe doesn't guarantee success unfortunately */
(void)system("modprobe -q ipv6 2>/dev/null >/dev/null");
/* Thus test it again */
if (access("/proc/net/if_inet6", F_OK))
{
dolog(LOG_ERR, "No IPv6 Stack found! Please check your kernel and module configuration\n");
return false;
}
}
/* Try to load modules (SIT tunnel, TUN/TAP)
* They can be kernel builtins and there is no easy
* way to check if they are loaded/built except for
* trying to use them and fail at that point
*/
(void)system("modprobe -q sit 2>/dev/null >/dev/null");
(void)system("modprobe -q tun 2>/dev/null >/dev/null");
return true;
}
bool aiccu_os_setup(struct TIC_Tunnel *hTunnel)
{
if (hTunnel->uses_tundev == 0)
{
aiccu_exec(
"ip tunnel add %s mode sit %s%s remote %s",
g_aiccu->ipv6_interface,
strcmp(hTunnel->sIPv4_Local, "heartbeat") == 0 ? "" : "local ",
strcmp(hTunnel->sIPv4_Local, "heartbeat") == 0 ? "" : hTunnel->sIPv4_Local,
hTunnel->sIPv4_POP);
}
aiccu_exec(
"ip link set %s up",
g_aiccu->ipv6_interface);
aiccu_exec(
"ip link set mtu %u dev %s",
hTunnel->nMTU,
g_aiccu->ipv6_interface);
if (hTunnel->uses_tundev == 0)
{
aiccu_exec(
"ip tunnel change %s ttl 64",
g_aiccu->ipv6_interface);
}
else
{
/* Add a LinkLocal address for AYIYA tunnels */
aiccu_exec(
"ip -6 addr add %s/%u dev %s",
hTunnel->sIPv6_LinkLocal,
64,
g_aiccu->ipv6_interface);
}
aiccu_exec(
"ip -6 addr add %s/%u dev %s",
hTunnel->sIPv6_Local,
hTunnel->nIPv6_PrefixLength,
g_aiccu->ipv6_interface);
if (g_aiccu->defaultroute)
{
aiccu_exec(
"ip -6 ro add %s via %s dev %s",
"default",
hTunnel->sIPv6_POP,
g_aiccu->ipv6_interface);
}
return true;
}
void aiccu_os_reconfig(struct TIC_Tunnel *hTunnel)
{
if (hTunnel->uses_tundev == 0)
{
aiccu_exec(
"ip tunnel change %s local %s",
g_aiccu->ipv6_interface,
hTunnel->sIPv4_Local);
}
}
void aiccu_os_delete(struct TIC_Tunnel *hTunnel)
{
hTunnel = hTunnel;
aiccu_exec(
"ip link set %s down",
g_aiccu->ipv6_interface);
if (hTunnel->uses_tundev == 0)
{
aiccu_exec(
"ip tunnel del %s",
g_aiccu->ipv6_interface);
}
}
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