void
ipv6cp_Init(struct ipv6cp *ipv6cp, struct bundle *bundle, struct link *l,
const struct fsm_parent *parent)
{
static const char * const timer_names[] =
{"IPV6CP restart", "IPV6CP openmode", "IPV6CP stopped"};
int n;
fsm_Init(&ipv6cp->fsm, "IPV6CP", PROTO_IPV6CP, 1, IPV6CP_MAXCODE, LogIPV6CP,
bundle, l, parent, &ipv6cp_Callbacks, timer_names);
ipv6cp->cfg.fsm.timeout = DEF_FSMRETRY;
ipv6cp->cfg.fsm.maxreq = DEF_FSMTRIES;
ipv6cp->cfg.fsm.maxtrm = DEF_FSMTRIES;
SetInterfaceID(ipv6cp->my_ifid, 0);
do {
SetInterfaceID(ipv6cp->his_ifid, 1);
} while (memcmp(ipv6cp->his_ifid, ipv6cp->my_ifid, IPV6CP_IFIDLEN) == 0);
if (probe.ipv6_available) {
n = 100;
while (n &&
!ipcp_SetIPv6address(ipv6cp, ipv6cp->my_ifid, ipv6cp->his_ifid)) {
do {
n--;
SetInterfaceID(ipv6cp->my_ifid, 1);
} while (n
&& memcmp(ipv6cp->his_ifid, ipv6cp->my_ifid, IPV6CP_IFIDLEN) == 0);
}
}
throughput_init(&ipv6cp->throughput, SAMPLE_PERIOD);
memset(ipv6cp->Queue, '\0', sizeof ipv6cp->Queue);
ipv6cp_Setup(ipv6cp);
}
static void
ipv6cp_DecodeConfig(struct fsm *fp, u_char *cp, u_char *end, int mode_type,
struct fsm_decode *dec)
{
/* Deal with incoming PROTO_IPV6CP */
struct ipv6cp *ipv6cp = fsm2ipv6cp(fp);
int n;
char tbuff[100];
u_char ifid[IPV6CP_IFIDLEN], zero[IPV6CP_IFIDLEN];
struct fsm_opt *opt;
memset(zero, 0, IPV6CP_IFIDLEN);
while (end - cp >= (int)sizeof(opt->hdr)) {
if ((opt = fsm_readopt(&cp)) == NULL)
break;
snprintf(tbuff, sizeof tbuff, " %s[%d]", protoname(opt->hdr.id),
opt->hdr.len);
switch (opt->hdr.id) {
case TY_TOKEN:
memcpy(ifid, opt->data, IPV6CP_IFIDLEN);
log_Printf(LogIPV6CP, "%s 0x%02x%02x%02x%02x%02x%02x%02x%02x\n", tbuff,
ifid[0], ifid[1], ifid[2], ifid[3], ifid[4], ifid[5], ifid[6], ifid[7]);
switch (mode_type) {
case MODE_REQ:
ipv6cp->peer_tokenreq = 1;
ipv6cp_ValidateInterfaceID(ipv6cp, ifid, dec);
break;
case MODE_NAK:
if (memcmp(ifid, zero, IPV6CP_IFIDLEN) == 0) {
log_Printf(log_IsKept(LogIPV6CP) ? LogIPV6CP : LogPHASE,
"0x0000000000000000: Unacceptable IntefaceID!\n");
fsm_Close(&ipv6cp->fsm);
} else if (memcmp(ifid, ipv6cp->his_ifid, IPV6CP_IFIDLEN) == 0) {
log_Printf(log_IsKept(LogIPV6CP) ? LogIPV6CP : LogPHASE,
"0x%02x%02x%02x%02x%02x%02x%02x%02x: "
"Unacceptable IntefaceID!\n",
ifid[0], ifid[1], ifid[2], ifid[3],
ifid[4], ifid[5], ifid[6], ifid[7]);
} else if (memcmp(ifid, ipv6cp->my_ifid, IPV6CP_IFIDLEN) != 0) {
n = 100;
while (n && !ipcp_SetIPv6address(ipv6cp, ifid, ipv6cp->his_ifid)) {
do {
n--;
SetInterfaceID(ifid, 1);
} while (n && memcmp(ifid, ipv6cp->his_ifid, IPV6CP_IFIDLEN) == 0);
}
if (n == 0) {
log_Printf(log_IsKept(LogIPV6CP) ? LogIPV6CP : LogPHASE,
"0x0000000000000000: Unacceptable IntefaceID!\n");
fsm_Close(&ipv6cp->fsm);
} else {
log_Printf(LogIPV6CP, "%s changing IntefaceID: "
"0x%02x%02x%02x%02x%02x%02x%02x%02x "
"--> 0x%02x%02x%02x%02x%02x%02x%02x%02x\n", tbuff,
ipv6cp->my_ifid[0], ipv6cp->my_ifid[1],
ipv6cp->my_ifid[2], ipv6cp->my_ifid[3],
ipv6cp->my_ifid[4], ipv6cp->my_ifid[5],
ipv6cp->my_ifid[6], ipv6cp->my_ifid[7],
ifid[0], ifid[1], ifid[2], ifid[3],
ifid[4], ifid[5], ifid[6], ifid[7]);
memcpy(ipv6cp->my_ifid, ifid, IPV6CP_IFIDLEN);
bundle_AdjustFilters(fp->bundle, &ipv6cp->myaddr, NULL);
}
}
break;
case MODE_REJ:
ipv6cp->his_reject |= (1 << opt->hdr.id);
break;
}
break;
default:
if (mode_type != MODE_NOP) {
ipv6cp->my_reject |= (1 << opt->hdr.id);
fsm_rej(dec, opt);
}
break;
}
}
if (mode_type != MODE_NOP) {
if (mode_type == MODE_REQ && !ipv6cp->peer_tokenreq) {
if (dec->rejend == dec->rej && dec->nakend == dec->nak) {
/*
* Pretend the peer has requested a TOKEN.
* We do this to ensure that we only send one NAK if the only
* reason for the NAK is because the peer isn't sending a
* TY_TOKEN REQ. This stops us from repeatedly trying to tell
* the peer that we have to have an IP address on their end.
*/
ipv6cp->peer_tokenreq = 1;
}
memset(ifid, 0, IPV6CP_IFIDLEN);
ipv6cp_ValidateInterfaceID(ipv6cp, ifid, dec);
}
fsm_opt_normalise(dec);
}
}
