#include <sys/time.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
-#include <arpa/inet.h>
#include <netinet/in.h>
#include <net/if.h>
static int request_prefix = -1;
static enum odhcp6c_ia_mode na_mode = IA_MODE_NONE, pd_mode = IA_MODE_NONE;
static bool accept_reconfig = false;
-// Server unicast address
-static struct in6_addr server_addr = IN6ADDR_ANY_INIT;
// Reconfigure key
static uint8_t reconf_key[16];
htons(DHCPV6_OPT_SIP_SERVER_A),
htons(DHCPV6_OPT_DNS_SERVERS),
htons(DHCPV6_OPT_DNS_DOMAIN),
- htons(DHCPV6_OPT_UNICAST),
htons(DHCPV6_OPT_NTP_SERVER),
htons(DHCPV6_OPT_AFTR_NAME),
htons(DHCPV6_OPT_PD_EXCLUDE),
0, ALL_DHCPV6_RELAYS, ifindex};
struct msghdr msg = {&srv, sizeof(srv), iov, cnt, NULL, 0, 0};
- switch (type) {
- case DHCPV6_MSG_REQUEST:
- case DHCPV6_MSG_RENEW:
- case DHCPV6_MSG_RELEASE:
- case DHCPV6_MSG_DECLINE:
- if (!IN6_IS_ADDR_UNSPECIFIED(&server_addr) &&
- odhcp6c_addr_in_scope(&server_addr)) {
- srv.sin6_addr = server_addr;
- if (!IN6_IS_ADDR_LINKLOCAL(&server_addr))
- srv.sin6_scope_id = 0;
- }
- break;
- default:
- break;
- }
-
- if (sendmsg(sock, &msg, 0) < 0) {
- char in6_str[INET6_ADDRSTRLEN];
-
- syslog(LOG_ERR, "Failed to send DHCPV6 message to %s (%s)",
- inet_ntop(AF_INET6, (const void *)&srv.sin6_addr,
- in6_str, sizeof(in6_str)), strerror(errno));
- }
+ sendmsg(sock, &msg, 0);
}
return false;
}
- uint8_t *end = ((uint8_t*)buf) + len, *odata,
+ uint8_t *end = ((uint8_t*)buf) + len, *odata = NULL,
rcmsg = DHCPV6_MSG_UNKNOWN;
- uint16_t otype, olen;
+ uint16_t otype, olen = UINT16_MAX;
bool clientid_ok = false, serverid_ok = false, rcauth_ok = false,
ia_present = false, options_valid = true;
uint16_t olen, otype;
uint8_t *odata, pref = 0;
struct dhcpv6_server_cand cand = {false, false, 0, 0, {0},
- IN6ADDR_ANY_INIT, DHCPV6_SOL_MAX_RT,
+ DHCPV6_SOL_MAX_RT,
DHCPV6_INF_MAX_RT, NULL, NULL, 0, 0};
bool have_na = false;
int have_pd = 0;
} else if (otype == DHCPV6_OPT_PREF && olen >= 1 &&
cand.preference >= 0) {
cand.preference = pref = odata[0];
- } else if (otype == DHCPV6_OPT_UNICAST && olen == sizeof(cand.server_addr)) {
- cand.server_addr = *(struct in6_addr *)odata;
} else if (otype == DHCPV6_OPT_RECONF_ACCEPT) {
cand.wants_reconfigure = true;
} else if (otype == DHCPV6_OPT_SOL_MAX_RT && olen == 4) {
continue;
dhcpv6_parse_ia(ia_hdr, odata + olen + sizeof(*ia_hdr));
- } else if (otype == DHCPV6_OPT_UNICAST && olen == sizeof(server_addr)) {
- server_addr = *(struct in6_addr *)odata;
} else if (otype == DHCPV6_OPT_STATUS && olen >= 2) {
uint8_t *mdata = (olen > 2) ? &odata[2] : NULL;
uint16_t mlen = (olen > 2) ? olen - 2 : 0;
t1 = l_t1;
t2 = l_t2;
t3 = l_t3;
+ } else {
+ t1 = 600;
}
return (int)(ia_pd_entries + ia_na_entries);
break;
case DHCPV6_UseMulticast:
- switch(orig) {
- case DHCPV6_MSG_REQUEST:
- case DHCPV6_MSG_RENEW:
- case DHCPV6_MSG_RELEASE:
- case DHCPV6_MSG_DECLINE:
- // Message needs to be retransmitted according to RFC3315 chapter 18.1.8
- server_addr = in6addr_any;
- *ret = 0;
- break;
- default:
- break;
- }
+ // TODO handle multicast status code
break;
case DHCPV6_NoAddrsAvail:
// Remove identical duid server candidate
for (i = 0; i < cand_len / sizeof(*c); ++i) {
if (cand->duid_len == c[i].duid_len &&
- !memcmp(cand->duid, c[i].duid, cand->duid_len)) {
+ !memcmp(cand->duid, c[i].duid, cand->duid_len)) {
free(c[i].ia_na);
free(c[i].ia_pd);
odhcp6c_remove_state(STATE_SERVER_CAND, i * sizeof(*c), sizeof(*c));
// Server candidates need deep delete for IA_NA/IA_PD
for (i = 0; i < cand_len / sizeof(*c); ++i) {
- if (c[i].ia_na)
- free(c[i].ia_na);
- if (c[i].ia_pd)
- free(c[i].ia_pd);
+ free(c[i].ia_na);
+ free(c[i].ia_pd);
}
odhcp6c_clear_state(STATE_SERVER_CAND);
}
size_t cand_len;
struct dhcpv6_server_cand *cand = odhcp6c_get_state(STATE_SERVER_CAND, &cand_len);
uint16_t hdr[2];
- int ret = DHCPV6_STATELESS;
+ int ret = (na_mode == IA_MODE_NONE && pd_mode == IA_MODE_NONE) ?
+ DHCPV6_STATELESS : DHCPV6_STATEFUL;
// Clear lingering candidate state info
odhcp6c_clear_state(STATE_SERVER_ID);