/**
- * Copyright (C) 2012-2013 Steven Barth <steven@midlink.org>
+ * Copyright (C) 2012-2014 Steven Barth <steven@midlink.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License v2 as published by
#include "odhcp6c.h"
#include "ra.h"
-#ifdef EXT_BFD_PING
-#include "bfd.h"
-#endif
static void sighandler(int signal);
static uint8_t *state_data[_STATE_MAX] = {NULL};
static size_t state_len[_STATE_MAX] = {0};
-static volatile int do_signal = 0;
+static volatile bool signal_io = false;
+static volatile bool signal_usr1 = false;
+static volatile bool signal_usr2 = false;
+static volatile bool signal_term = false;
+
static int urandom_fd = -1, allow_slaac_only = 0;
static bool bound = false, release = true;
static time_t last_update = 0;
+static unsigned int min_update_interval = DEFAULT_MIN_UPDATE_INTERVAL;
int main(_unused int argc, char* const argv[])
{
uint8_t buf[134];
char *optpos;
uint16_t opttype;
+ uint16_t optlen;
enum odhcp6c_ia_mode ia_na_mode = IA_MODE_TRY;
- enum odhcp6c_ia_mode ia_pd_mode = IA_MODE_TRY;
+ enum odhcp6c_ia_mode ia_pd_mode = IA_MODE_NONE;
+ int ia_pd_iaid_index = 0;
static struct in6_addr ifid = IN6ADDR_ANY_INIT;
int sol_timeout = DHCPV6_SOL_MAX_RT;
-#ifdef EXT_BFD_PING
- int bfd_interval = 0, bfd_loss = 3;
-#endif
bool help = false, daemonize = false;
int logopt = LOG_PID;
- int c, request_pd = 0;
- while ((c = getopt(argc, argv, "S::N:P:FB:c:i:r:s:kt:hedp:")) != -1) {
+ int c;
+ unsigned int client_options = DHCPV6_CLIENT_FQDN | DHCPV6_ACCEPT_RECONFIGURE;
+
+ while ((c = getopt(argc, argv, "S::N:V:P:FB:c:i:r:Ru:s:kt:m:hedp:fa")) != -1) {
switch (c) {
case 'S':
allow_slaac_only = (optarg) ? atoi(optarg) : -1;
}
break;
+ case 'V':
+ l = script_unhexlify(buf, sizeof(buf), optarg);
+ if (!l)
+ help=true;
+
+ odhcp6c_add_state(STATE_VENDORCLASS, buf, l);
+
+ break;
case 'P':
+ if (ia_pd_mode == IA_MODE_NONE)
+ ia_pd_mode = IA_MODE_TRY;
+
if (allow_slaac_only >= 0 && allow_slaac_only < 10)
allow_slaac_only = 10;
- request_pd = strtoul(optarg, NULL, 10);
- if (request_pd == 0)
- request_pd = -1;
+ char *iaid_begin;
+ int iaid_len = 0;
+
+ int prefix_length = strtoul(optarg, &iaid_begin, 10);
+
+ if (*iaid_begin != '\0' && *iaid_begin != ',' && *iaid_begin != ':') {
+ syslog(LOG_ERR, "invalid argument: '%s'", optarg);
+ return 1;
+ }
+
+ struct odhcp6c_request_prefix prefix = { 0, prefix_length };
+
+ if (*iaid_begin == ',' && (iaid_len = strlen(iaid_begin)) > 1)
+ memcpy(&prefix.iaid, iaid_begin + 1, iaid_len > 4 ? 4 : iaid_len);
+ else if (*iaid_begin == ':')
+ prefix.iaid = htonl((uint32_t)strtoul(&iaid_begin[1], NULL, 16));
+ else
+ prefix.iaid = htonl(++ia_pd_iaid_index);
+
+ odhcp6c_add_state(STATE_IA_PD_INIT, &prefix, sizeof(prefix));
break;
ia_pd_mode = IA_MODE_FORCE;
break;
-#ifdef EXT_BFD_PING
- case 'B':
- bfd_interval = atoi(optarg);
- break;
-#endif
-
case 'c':
l = script_unhexlify(&buf[4], sizeof(buf) - 4, optarg);
if (l > 0) {
}
break;
+ case 'R':
+ client_options |= DHCPV6_STRICT_OPTIONS;
+ break;
+
+ case 'u':
+ optlen = htons(strlen(optarg));
+ odhcp6c_add_state(STATE_USERCLASS, &optlen, 2);
+ odhcp6c_add_state(STATE_USERCLASS, optarg, strlen(optarg));
+ break;
+
case 's':
script = optarg;
break;
sol_timeout = atoi(optarg);
break;
+ case 'm':
+ min_update_interval = atoi(optarg);
+ break;
+
case 'e':
logopt |= LOG_PERROR;
break;
pidfile = optarg;
break;
+ case 'f':
+ client_options &= ~DHCPV6_CLIENT_FQDN;
+ break;
+
+ case 'a':
+ client_options &= ~DHCPV6_ACCEPT_RECONFIGURE;
+ break;
+
default:
help = true;
break;
signal(SIGUSR2, sighandler);
if ((urandom_fd = open("/dev/urandom", O_CLOEXEC | O_RDONLY)) < 0 ||
- init_dhcpv6(ifname, request_pd, sol_timeout) ||
+ init_dhcpv6(ifname, client_options, sol_timeout) ||
ra_init(ifname, &ifid) || script_init(script, ifname)) {
syslog(LOG_ERR, "failed to initialize: %s", strerror(errno));
return 3;
pidfile = pidbuf;
}
- int fd = open(pidfile, O_WRONLY | O_CREAT);
+ int fd = open(pidfile, O_WRONLY | O_CREAT, 0644);
if (fd >= 0) {
char buf[8];
int len = snprintf(buf, sizeof(buf), "%i\n", getpid());
script_call("started");
- while (do_signal != SIGTERM) { // Main logic
+ while (!signal_term) { // Main logic
odhcp6c_clear_state(STATE_SERVER_ID);
+ odhcp6c_clear_state(STATE_SERVER_ADDR);
odhcp6c_clear_state(STATE_IA_NA);
odhcp6c_clear_state(STATE_IA_PD);
odhcp6c_clear_state(STATE_SNTP_IP);
- odhcp6c_clear_state(STATE_SNTP_FQDN);
+ odhcp6c_clear_state(STATE_NTP_IP);
+ odhcp6c_clear_state(STATE_NTP_FQDN);
odhcp6c_clear_state(STATE_SIP_IP);
odhcp6c_clear_state(STATE_SIP_FQDN);
dhcpv6_set_ia_mode(ia_na_mode, ia_pd_mode);
syslog(LOG_NOTICE, "(re)starting transaction on %s", ifname);
- do_signal = 0;
+ signal_usr1 = signal_usr2 = false;
int mode = dhcpv6_request(DHCPV6_MSG_SOLICIT);
odhcp6c_signal_process();
do {
int res = dhcpv6_request(mode == DHCPV6_STATELESS ?
DHCPV6_MSG_INFO_REQ : DHCPV6_MSG_REQUEST);
+ bool signalled = odhcp6c_signal_process();
- odhcp6c_signal_process();
if (res > 0)
break;
- else if (do_signal > 0) {
+ else if (signalled) {
mode = -1;
break;
}
bound = true;
syslog(LOG_NOTICE, "entering stateless-mode on %s", ifname);
- while (do_signal == 0 || do_signal == SIGUSR1) {
- do_signal = 0;
+ while (!signal_usr2 && !signal_term) {
+ signal_usr1 = false;
script_call("informed");
int res = dhcpv6_poll_reconfigure();
if (res > 0)
continue;
- if (do_signal == SIGUSR1) {
- do_signal = 0; // Acknowledged
+ if (signal_usr1) {
+ signal_usr1 = false; // Acknowledged
continue;
- } else if (do_signal > 0)
+ }
+ if (signal_usr2 || signal_term)
break;
res = dhcpv6_request(DHCPV6_MSG_INFO_REQ);
odhcp6c_signal_process();
- if (do_signal == SIGUSR1)
+ if (signal_usr1)
continue;
else if (res < 0)
break;
break;
case DHCPV6_STATEFUL:
- script_call("bound");
bound = true;
+ script_call("bound");
syslog(LOG_NOTICE, "entering stateful-mode on %s", ifname);
-#ifdef EXT_BFD_PING
- if (bfd_interval > 0)
- bfd_start(ifname, bfd_loss, bfd_interval);
-#endif
- while (do_signal == 0 || do_signal == SIGUSR1) {
+ while (!signal_usr2 && !signal_term) {
// Renew Cycle
// Wait for T1 to expire or until we get a reconfigure
int res = dhcpv6_poll_reconfigure();
}
// Handle signal, if necessary
- if (do_signal == SIGUSR1)
- do_signal = 0; // Acknowledged
- else if (do_signal > 0)
+ if (signal_usr1)
+ signal_usr1 = false; // Acknowledged
+ if (signal_usr2 || signal_term)
break; // Other signal type
// Send renew as T1 expired
- size_t ia_pd_len, ia_na_len;
- odhcp6c_get_state(STATE_IA_PD, &ia_pd_len);
- odhcp6c_get_state(STATE_IA_NA, &ia_na_len);
-
- // If we have any IAs, send renew, otherwise request
- if (ia_pd_len == 0 && ia_na_len == 0)
- res = dhcpv6_request(DHCPV6_MSG_REQUEST);
- else
- res = dhcpv6_request(DHCPV6_MSG_RENEW);
-
+ res = dhcpv6_request(DHCPV6_MSG_RENEW);
odhcp6c_signal_process();
if (res > 0) { // Renew was succesfull
// Publish updates
}
odhcp6c_clear_state(STATE_SERVER_ID); // Remove binding
+ odhcp6c_clear_state(STATE_SERVER_ADDR);
+
+ size_t ia_pd_len, ia_na_len;
+ odhcp6c_get_state(STATE_IA_PD, &ia_pd_len);
+ odhcp6c_get_state(STATE_IA_NA, &ia_na_len);
+
+ if (ia_pd_len == 0 && ia_na_len == 0)
+ break;
// If we have IAs, try rebind otherwise restart
res = dhcpv6_request(DHCPV6_MSG_REBIND);
if (res > 0)
script_call("rebound");
else {
-#ifdef EXT_BFD_PING
- bfd_stop();
-#endif
break;
}
}
" -N <mode> Mode for requesting addresses [try|force|none]\n"
" -P <length> Request IPv6-Prefix (0 = auto)\n"
" -F Force IPv6-Prefix\n"
-#ifdef EXT_BFD_PING
- " -B <interval> Enable BFD ping check\n"
-#endif
+ " -V <class> Set vendor-class option (base-16 encoded)\n"
+ " -u <user-class> Set user-class option string\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"
+ " -R Do not request any options except those specified with -r\n"
" -s <script> Status update script (/usr/sbin/odhcp6c-update)\n"
+ " -a Don't send Accept Reconfigure option\n"
+ " -f Don't send Client FQDN option\n"
" -k Don't send a RELEASE when stopping\n"
- " -t <seconds> Maximum timeout for DHCPv6-SOLICIT (120)\n"
+ " -t <seconds> Maximum timeout for DHCPv6-SOLICIT (3600)\n"
+ " -m <seconds> Minimum time between accepting updates (30)\n"
"\nInvocation options:\n"
- " -p <pidfile> Set pidfile (/var/run/6relayd.pid)\n"
+ " -p <pidfile> Set pidfile (/var/run/odhcp6c.pid)\n"
" -d Daemonize\n"
" -e Write logmessages to stderr\n"
//" -v Increase logging verbosity\n"
{
struct timespec t = {0, 0};
syscall(SYS_clock_gettime, CLOCK_MONOTONIC, &t);
- return t.tv_sec * 1000 + t.tv_nsec / 1000000;
+ return ((uint64_t)t.tv_sec) * 1000 + ((uint64_t)t.tv_nsec) / 1000000;
}
bool odhcp6c_signal_process(void)
{
- if (do_signal == SIGIO) {
- do_signal = 0;
+ while (signal_io) {
+ signal_io = false;
+
bool ra_updated = ra_process();
if (ra_link_up())
- do_signal = SIGUSR2;
+ signal_usr2 = true;
- if (ra_updated && (bound || allow_slaac_only == 0))
+ if (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);
-
-#ifdef EXT_BFD_PING
- bfd_receive();
-#endif
}
- return do_signal != 0;
+ return signal_usr1 || signal_usr2 || signal_term;
}
if (new->valid > 0) {
if (x) {
- if (new->valid >= x->valid && new->valid - x->valid < 60 &&
+ if (new->valid >= x->valid && new->valid != UINT32_MAX &&
+ new->valid - x->valid < min_update_interval &&
new->preferred >= x->preferred &&
- new->preferred - x->preferred < 60 &&
+ new->preferred != UINT32_MAX &&
+ new->preferred - x->preferred < min_update_interval &&
x->class == new->class)
return false;
x->valid = new->valid;
x->t1 = new->t1;
x->t2 = new->t2;
x->class = new->class;
+ x->iaid = new->iaid;
} else {
odhcp6c_add_state(state, new, sizeof(*new));
}
if (signal == SIGCHLD)
while (waitpid(-1, NULL, WNOHANG) > 0);
else if (signal == SIGUSR1)
- do_signal = SIGUSR1;
+ signal_usr1 = true;
else if (signal == SIGUSR2)
- do_signal = SIGUSR2;
+ signal_usr2 = true;
else if (signal == SIGIO)
- do_signal = SIGIO;
+ signal_io = true;
else
- do_signal = SIGTERM;
+ signal_term = true;
}
projects / odhcp6c.git / blobdiff