#include <net/if.h>
#include <sys/wait.h>
#include <sys/syscall.h>
+#include <arpa/inet.h>
#include "odhcp6c.h"
#include "ra.h"
static volatile int do_signal = 0;
static int urandom_fd = -1, allow_slaac_only = 0;
static bool bound = false, release = true;
+static time_t last_update = 0;
int main(_unused int argc, char* const argv[])
char *optpos;
uint16_t opttype;
enum odhcp6c_ia_mode ia_na_mode = IA_MODE_TRY;
+ static struct in6_addr ifid = IN6ADDR_ANY_INIT;
bool help = false, daemonize = false;
int logopt = LOG_PID;
int c, request_pd = 0;
- while ((c = getopt(argc, argv, "S::N:P:c:r:s:khedp:")) != -1) {
+ while ((c = getopt(argc, argv, "S::N:P:c:i:r:s:khedp:")) != -1) {
switch (c) {
case 'S':
allow_slaac_only = (optarg) ? atoi(optarg) : -1;
}
break;
+ case 'i':
+ if (inet_pton(AF_INET6, optarg, &ifid) != 1)
+ help = true;
+ break;
+
case 'r':
optpos = optarg;
while (optpos[0]) {
signal(SIGUSR2, sighandler);
if ((urandom_fd = open("/dev/urandom", O_CLOEXEC | O_RDONLY)) < 0 ||
- init_dhcpv6(ifname, request_pd) || ra_init(ifname) ||
+ init_dhcpv6(ifname, request_pd) || ra_init(ifname, &ifid) ||
script_init(script, ifname)) {
syslog(LOG_ERR, "failed to initialize: %s", strerror(errno));
return 3;
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;
" -N <mode> Mode for requesting addresses [try|force|none]\n"
" -P <length> Request IPv6-Prefix (0 = auto)\n"
" -c <clientid> Override client-ID (base-16 encoded)\n"
+ " -i <iface-id> Use a custom interface identifier for RA handling\n"
" -r <options> Options to be requested (comma-separated)\n"
" -s <script> Status update script (/usr/sbin/odhcp6c-update)\n"
" -k Don't send a RELEASE when stopping\n"
{
if (do_signal == SIGIO) {
do_signal = 0;
+ bool ra_rtnled = ra_rtnl_process();
bool ra_updated = ra_process();
- if (ra_rtnl_process() || (ra_updated && (bound || allow_slaac_only == 0)))
+ if (ra_rtnled || (ra_updated && (bound || allow_slaac_only == 0)))
script_call("ra-updated"); // Immediate process urgent events
else if (ra_updated && !bound && allow_slaac_only > 0)
script_delay_call("ra-updated", allow_slaac_only);
}
+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];
void odhcp6c_expire(void)
{
- static time_t last_update = 0;
time_t now = odhcp6c_get_milli_time() / 1000;
-
uint32_t elapsed = (last_update > 0) ? now - last_update : 0;
last_update = now;
}
+uint32_t odhcp6c_elapsed(void)
+{
+ return odhcp6c_get_milli_time() / 1000 - last_update;
+}
+
+
void odhcp6c_random(void *buf, size_t len)
{
read(urandom_fd, buf, len);