#ifdef EXT_CER_ID
htons(DHCPV6_OPT_CER_ID),
#endif
-#ifdef EXT_S46
htons(DHCPV6_OPT_S46_CONT_MAPE),
htons(DHCPV6_OPT_S46_CONT_MAPT),
htons(DHCPV6_OPT_S46_CONT_LW),
-#endif
};
odhcp6c_add_state(STATE_ORO, oro, sizeof(oro));
}
struct dhcpv6_ia_hdr hdr_ia_na = {
htons(DHCPV6_OPT_IA_NA),
htons(sizeof(hdr_ia_na) - 4),
- 1, 0, 0
+ htonl(1), 0, 0
};
struct dhcpv6_ia_addr pa[ia_na_entries];
round_start = odhcp6c_get_milli_time()) {
uint8_t buf[1536], cmsg_buf[CMSG_SPACE(sizeof(struct in6_pktinfo))];
struct iovec iov = {buf, sizeof(buf)};
- struct msghdr msg = {NULL, 0, &iov, 1,
+ struct sockaddr_in6 addr;
+ struct msghdr msg = {&addr, sizeof(addr), &iov, 1,
cmsg_buf, sizeof(cmsg_buf), 0};
struct in6_pktinfo *pktinfo = NULL;
+
// Check for pending signal
if (odhcp6c_signal_process())
return -1;
"%llums", (unsigned long long)elapsed);
if (retx->handler_reply)
- len = retx->handler_reply(type, rc, opt, opt_end);
+ len = retx->handler_reply(type, rc, opt, opt_end, &addr);
if (len > 0 && round_end - round_start > 1000)
round_end = 1000 + round_start;
rcmsg = odata[0];
} else if ((otype == DHCPV6_OPT_IA_PD || otype == DHCPV6_OPT_IA_NA)) {
ia_present = true;
- if (olen < sizeof(struct dhcpv6_ia_hdr))
+ if (olen < -4 + sizeof(struct dhcpv6_ia_hdr))
options_valid = false;
}
else if ((otype == DHCPV6_OPT_IA_ADDR) || (otype == DHCPV6_OPT_IA_PREFIX) ||
static int dhcpv6_handle_reconfigure(_unused enum dhcpv6_msg orig, const int rc,
- const void *opt, const void *end)
+ const void *opt, const void *end, _unused const struct sockaddr_in6 *from)
{
uint16_t otype, olen;
uint8_t *odata, msg = DHCPV6_MSG_RENEW;
odata[0] == DHCPV6_MSG_INFO_REQ))
msg = odata[0];
- dhcpv6_handle_reply(DHCPV6_MSG_UNKNOWN, rc, NULL, NULL);
+ dhcpv6_handle_reply(DHCPV6_MSG_UNKNOWN, rc, NULL, NULL, NULL);
return msg;
}
// Collect all advertised servers
static int dhcpv6_handle_advert(enum dhcpv6_msg orig, const int rc,
- const void *opt, const void *end)
+ const void *opt, const void *end, _unused const struct sockaddr_in6 *from)
{
uint16_t olen, otype;
uint8_t *odata, pref = 0;
dhcpv6_for_each_option(opt, end, otype, olen, odata) {
if (orig == DHCPV6_MSG_SOLICIT &&
(otype == DHCPV6_OPT_IA_PD || otype == DHCPV6_OPT_IA_NA) &&
- olen > sizeof(struct dhcpv6_ia_hdr)) {
+ olen > -4 + sizeof(struct dhcpv6_ia_hdr)) {
struct dhcpv6_ia_hdr *ia_hdr = (void*)(&odata[-4]);
dhcpv6_parse_ia(ia_hdr, odata + olen + sizeof(*ia_hdr));
}
struct dhcpv6_ia_hdr *h = (struct dhcpv6_ia_hdr*)&odata[-4];
uint8_t *oend = odata + olen, *d;
dhcpv6_for_each_option(&h[1], oend, otype, olen, d) {
- if (otype == DHCPV6_OPT_IA_PREFIX && (olen + 4) >=
- (uint16_t)sizeof(struct dhcpv6_ia_prefix)) {
+ if (otype == DHCPV6_OPT_IA_PREFIX &&
+ olen >= -4 + sizeof(struct dhcpv6_ia_prefix)) {
struct dhcpv6_ia_prefix *p = (struct dhcpv6_ia_prefix*)&d[-4];
have_pd = p->prefix;
}
struct dhcpv6_ia_hdr *h = (struct dhcpv6_ia_hdr*)&odata[-4];
uint8_t *oend = odata + olen, *d;
dhcpv6_for_each_option(&h[1], oend, otype, olen, d)
- if (otype == DHCPV6_OPT_IA_ADDR)
+ if (otype == DHCPV6_OPT_IA_ADDR &&
+ olen >= -4 + sizeof(struct dhcpv6_ia_addr))
have_na = true;
}
}
static int dhcpv6_handle_rebind_reply(enum dhcpv6_msg orig, const int rc,
- const void *opt, const void *end)
+ const void *opt, const void *end, const struct sockaddr_in6 *from)
{
- dhcpv6_handle_advert(orig, rc, opt, end);
+ dhcpv6_handle_advert(orig, rc, opt, end, from);
if (dhcpv6_commit_advert() < 0)
return -1;
- return dhcpv6_handle_reply(orig, rc, opt, end);
+ return dhcpv6_handle_reply(orig, rc, opt, end, from);
}
static int dhcpv6_handle_reply(enum dhcpv6_msg orig, _unused const int rc,
- const void *opt, const void *end)
+ const void *opt, const void *end, const struct sockaddr_in6 *from)
{
uint8_t *odata;
uint16_t otype, olen;
odhcp6c_clear_state(STATE_S46_MAPT);
odhcp6c_clear_state(STATE_S46_MAPE);
odhcp6c_clear_state(STATE_S46_LW);
+ odhcp6c_clear_state(STATE_PASSTHRU);
}
// Parse and find all matching IAs
dhcpv6_for_each_option(opt, end, otype, olen, odata) {
+ bool passthru = true;
+
if ((otype == DHCPV6_OPT_IA_PD || otype == DHCPV6_OPT_IA_NA)
- && olen > sizeof(struct dhcpv6_ia_hdr)) {
+ && olen > -4 + sizeof(struct dhcpv6_ia_hdr)) {
struct dhcpv6_ia_hdr *ia_hdr = (void*)(&odata[-4]);
// Test ID
- if (ia_hdr->iaid != 1 && otype == DHCPV6_OPT_IA_NA)
+ if (ia_hdr->iaid != htonl(1) && otype == DHCPV6_OPT_IA_NA)
continue;
uint16_t code = DHCPV6_Success;
continue;
dhcpv6_parse_ia(ia_hdr, odata + olen + sizeof(*ia_hdr));
+ passthru = false;
} else if (otype == DHCPV6_OPT_STATUS && olen >= 2) {
uint8_t *mdata = (olen > 2) ? &odata[2] : NULL;
uint16_t mlen = (olen > 2) ? olen - 2 : 0;
uint16_t code = ((int)odata[0]) << 8 | ((int)odata[1]);
dhcpv6_handle_status_code(orig, code, mdata, mlen, &ret);
+ passthru = false;
}
else if (otype == DHCPV6_OPT_DNS_SERVERS) {
if (olen % 16 == 0)
odhcp6c_add_state(STATE_DNS, odata, olen);
} else if (otype == DHCPV6_OPT_DNS_DOMAIN) {
odhcp6c_add_state(STATE_SEARCH, odata, olen);
+ passthru = false;
} else if (otype == DHCPV6_OPT_SNTP_SERVERS) {
if (olen % 16 == 0)
odhcp6c_add_state(STATE_SNTP_IP, odata, olen);
odhcp6c_add_state(STATE_SIP_FQDN, odata, olen);
} else if (otype == DHCPV6_OPT_INFO_REFRESH && olen >= 4) {
refresh = ntohl(*((uint32_t*)odata));
- } else if (otype == DHCPV6_OPT_AUTH && olen == -4 +
- sizeof(struct dhcpv6_auth_reconfigure)) {
- struct dhcpv6_auth_reconfigure *r = (void*)&odata[-4];
- if (r->protocol == 3 && r->algorithm == 1 &&
- r->reconf_type == 1)
- memcpy(reconf_key, r->key, sizeof(r->key));
+ passthru = false;
+ } else if (otype == DHCPV6_OPT_AUTH) {
+ if (olen == -4 + sizeof(struct dhcpv6_auth_reconfigure)) {
+ struct dhcpv6_auth_reconfigure *r = (void*)&odata[-4];
+ if (r->protocol == 3 && r->algorithm == 1 &&
+ r->reconf_type == 1)
+ memcpy(reconf_key, r->key, sizeof(r->key));
+ }
+ passthru = false;
} else if (otype == DHCPV6_OPT_AFTR_NAME && olen > 3) {
size_t cur_len;
odhcp6c_get_state(STATE_AFTR_NAME, &cur_len);
if (cur_len == 0)
odhcp6c_add_state(STATE_AFTR_NAME, odata, olen);
+ passthru = false;
} else if (otype == DHCPV6_OPT_SOL_MAX_RT && olen == 4) {
uint32_t sol_max_rt = ntohl(*((uint32_t *)odata));
if (sol_max_rt >= DHCPV6_SOL_MAX_RT_MIN &&
sol_max_rt <= DHCPV6_SOL_MAX_RT_MAX)
dhcpv6_retx[DHCPV6_MSG_SOLICIT].max_timeo = sol_max_rt;
+ passthru = false;
} else if (otype == DHCPV6_OPT_INF_MAX_RT && olen == 4) {
uint32_t inf_max_rt = ntohl(*((uint32_t *)odata));
if (inf_max_rt >= DHCPV6_INF_MAX_RT_MIN &&
inf_max_rt <= DHCPV6_INF_MAX_RT_MAX)
dhcpv6_retx[DHCPV6_MSG_INFO_REQ].max_timeo = inf_max_rt;
+ passthru = false;
#ifdef EXT_CER_ID
} else if (otype == DHCPV6_OPT_CER_ID && olen == -4 +
sizeof(struct dhcpv6_cer_id)) {
struct in6_addr any = IN6ADDR_ANY_INIT;
if (memcmp(&cer_id->addr, &any, sizeof(any)))
odhcp6c_add_state(STATE_CER, &cer_id->addr, sizeof(any));
+ passthru = false;
#endif
-#ifdef EXT_S46
} else if (otype == DHCPV6_OPT_S46_CONT_MAPT) {
odhcp6c_add_state(STATE_S46_MAPT, odata, olen);
+ passthru = false;
} else if (otype == DHCPV6_OPT_S46_CONT_MAPE) {
size_t mape_len;
odhcp6c_get_state(STATE_S46_MAPE, &mape_len);
if (mape_len == 0)
odhcp6c_add_state(STATE_S46_MAPE, odata, olen);
+ passthru = false;
} else if (otype == DHCPV6_OPT_S46_CONT_LW) {
odhcp6c_add_state(STATE_S46_LW, odata, olen);
-#endif
- } else if (otype != DHCPV6_OPT_CLIENTID &&
- otype != DHCPV6_OPT_SERVERID) {
- odhcp6c_add_state(STATE_CUSTOM_OPTS,
- &odata[-4], olen + 4);
+ passthru = false;
+ } else if (otype == DHCPV6_OPT_CLIENTID ||
+ otype == DHCPV6_OPT_SERVERID ||
+ otype == DHCPV6_OPT_IA_TA ||
+ otype == DHCPV6_OPT_PREF ||
+ otype == DHCPV6_OPT_UNICAST ||
+ otype == DHCPV6_OPT_FQDN ||
+ otype == DHCPV6_OPT_RECONF_ACCEPT) {
+ passthru = false;
+ } else {
+ odhcp6c_add_state(STATE_CUSTOM_OPTS, &odata[-4], olen + 4);
}
+
+ if (passthru)
+ odhcp6c_add_state(STATE_PASSTHRU, &odata[-4], olen + 4);
}
if (orig != DHCPV6_MSG_INFO_REQ) {
default :
break;
}
+
+ if (orig == DHCPV6_MSG_REBIND || orig == DHCPV6_MSG_REQUEST) {
+ odhcp6c_clear_state(STATE_SERVER_ADDR);
+ odhcp6c_add_state(STATE_SERVER_ADDR, &from->sin6_addr, 16);
+ }
}
}
else if (ret > 0) {
projects / odhcp6c.git / blobdiff