// Collect all advertised servers
-static int dhcpv6_handle_advert(_unused enum dhcpv6_msg orig,
+static int dhcpv6_handle_advert(enum dhcpv6_msg orig,
const void *opt, const void *end)
{
uint16_t olen, otype;
uint8_t *odata;
- struct dhcpv6_server_cand cand = {false, false, 0, 0, {0}};
+ struct dhcpv6_server_cand cand = {false, false, 0, 0, {0}, NULL, NULL, 0, 0};
dhcpv6_for_each_option(opt, end, otype, olen, odata) {
if (otype == DHCPV6_OPT_SERVERID && olen <= 130) {
cand.preference -= 2000;
}
}
+
+ if (orig == DHCPV6_MSG_SOLICIT &&
+ (otype == DHCPV6_OPT_IA_PD || otype == DHCPV6_OPT_IA_NA) &&
+ olen > sizeof(struct dhcpv6_ia_hdr)) {
+ struct dhcpv6_ia_hdr *ia_hdr = (void*)(&odata[-4]);
+ dhcpv6_parse_ia(&ia_hdr[1], odata + olen);
+ }
}
- if (cand.duid_len > 0)
+ if (cand.duid_len > 0) {
+ cand.ia_na = odhcp6c_move_state(STATE_IA_NA, &cand.ia_na_len);
+ cand.ia_pd = odhcp6c_move_state(STATE_IA_PD, &cand.ia_pd_len);
odhcp6c_add_state(STATE_SERVER_CAND, &cand, sizeof(cand));
+ }
+
+ if (orig == DHCPV6_MSG_SOLICIT) {
+ odhcp6c_clear_state(STATE_IA_NA);
+ odhcp6c_clear_state(STATE_IA_PD);
+ }
return -1;
}
odhcp6c_add_state(STATE_SERVER_ID, hdr, sizeof(hdr));
odhcp6c_add_state(STATE_SERVER_ID, c->duid, c->duid_len);
accept_reconfig = c->wants_reconfigure;
+ odhcp6c_add_state(STATE_IA_NA, c->ia_na, c->ia_na_len);
+ odhcp6c_add_state(STATE_IA_PD, c->ia_pd, c->ia_pd_len);
}
+ for (size_t i = 0; i < cand_len / sizeof(*c); ++i) {
+ free(cand[i].ia_na);
+ free(cand[i].ia_pd);
+ }
odhcp6c_clear_state(STATE_SERVER_CAND);
if (!c)
t1 = t2 = t3 = UINT32_MAX;
}
+ if (orig == DHCPV6_MSG_REQUEST) {
+ // Delete NA and PD we have in the state from the Advert
+ odhcp6c_clear_state(STATE_IA_NA);
+ odhcp6c_clear_state(STATE_IA_PD);
+ }
+
if (opt) {
odhcp6c_clear_state(STATE_DNS);
odhcp6c_clear_state(STATE_SEARCH);
while (do_signal != SIGTERM) { // Main logic
odhcp6c_clear_state(STATE_SERVER_ID);
- odhcp6c_clear_state(STATE_SERVER_CAND);
+ odhcp6c_clear_state(STATE_IA_NA);
odhcp6c_clear_state(STATE_IA_PD);
odhcp6c_clear_state(STATE_SNTP_IP);
odhcp6c_clear_state(STATE_SNTP_FQDN);
dhcpv6_set_ia_na_mode(ia_na_mode);
bound = false;
+ // Server candidates need deep-delete
+ size_t cand_len;
+ struct dhcpv6_server_cand *cand = odhcp6c_get_state(STATE_SERVER_CAND, &cand_len);
+ for (size_t i = 0; i < cand_len / sizeof(*cand); ++i) {
+ free(cand[i].ia_na);
+ free(cand[i].ia_pd);
+ }
+ odhcp6c_clear_state(STATE_SERVER_CAND);
+
syslog(LOG_NOTICE, "(re)starting transaction on %s", ifname);
do_signal = 0;
}
+void* odhcp6c_move_state(enum odhcp6c_state state, size_t *len)
+{
+ *len = state_len[state];
+ void *data = state_data[state];
+
+ state_len[state] = 0;
+ state_data[state] = NULL;
+
+ return data;
+}
+
+
void* odhcp6c_get_state(enum odhcp6c_state state, size_t *len)
{
*len = state_len[state];