int main(int argc, char *argv[])
{
#if defined(AEI_VDSL_CUSTOMER_BELLALIANT)
CmsRet ret;
cmsLog_init(EID_LEDCTL);
cmsLog_setLevel(DEFAULT_LOG_LEVEL);
if ((ret = cmsMsg_init(EID_LEDCTL, &msgHandle)) != CMSRET_SUCCESS)
{
cmsLog_error("msg initialization failed, ret=%d", ret);
cmsLog_cleanup();
return 0;
}
#endif
if (argc != 3)
{
usage(1);
}
cmsLog_error("++++++++%s %s",argv[1],argv[2]);
if (!cmsUtl_strcmp(argv[1], "WAN"))
{
processWanLed(argv[2]);
}
else
{
usage(1);
}
#if defined(AEI_VDSL_CUSTOMER_BELLALIANT)
cmsMsg_cleanup(&msgHandle);
cmsLog_cleanup();
#endif
return 0;
}
int main(int argc, char *argv[])
#endif
{
char *temp, *message;
unsigned long t1 = 0, t2 = 0, xid = 0;
unsigned long start = 0, lease;
fd_set rfds;
int fd, retval;
struct timeval tv;
int c, len;
struct ifreq ifr;
struct dhcpMessage packet;
struct in_addr temp_addr;
int pid_fd;
static struct option options[] = {
{"clientid", required_argument, 0, 'c'},
{"foreground", no_argument, 0, 'f'},
{"hostname", required_argument, 0, 'H'},
{"help", no_argument, 0, 'h'},
{"interface", required_argument, 0, 'i'},
{"now", no_argument, 0, 'n'},
{"pidfile", required_argument, 0, 'p'},
{"quit", no_argument, 0, 'q'},
{"request", required_argument, 0, 'r'},
{"script", required_argument, 0, 's'},
{"version", no_argument, 0, 'v'},
{"6rd", no_argument, 0, '6'},
{0, 0, 0, 0}
};
/* get options */
while (1) {
int option_index = 0;
// brcm
c = getopt_long(argc, argv, "c:fH:hi:np:qr:s:d:v:6I:D:O:S:P:", options, &option_index);
if (c == -1) break;
switch (c) {
case 'c':
len = strlen(optarg) > 255 ? 255 : strlen(optarg);
if (client_config.clientid) free(client_config.clientid);
client_config.clientid = malloc(len + 2);
client_config.clientid[OPT_CODE] = DHCP_CLIENT_ID;
client_config.clientid[OPT_LEN] = len;
strncpy(client_config.clientid + 2, optarg, len);
break;
case 'f':
client_config.foreground = 1;
break;
case 'H':
len = strlen(optarg) > 255 ? 255 : strlen(optarg);
if (client_config.hostname) free(client_config.hostname);
client_config.hostname = malloc(len + 2);
client_config.hostname[OPT_CODE] = DHCP_HOST_NAME;
client_config.hostname[OPT_LEN] = len;
strncpy(client_config.hostname + 2, optarg, len);
break;
case 'h':
print_usage();
return 0;
case 'i':
client_config.interface = optarg;
// brcm
strcpy(session_path, optarg);
break;
case 'n':
client_config.abort_if_no_lease = 1;
break;
case 'p':
client_config.pidfile = optarg;
break;
case 'q':
client_config.quit_after_lease = 1;
break;
case 'r':
requested_ip = inet_addr(optarg);
break;
// brcm
case 'd':
strcpy(vendor_class_id, optarg);
en_vendor_class_id=1;
break;
case '6':
ipv6rd_opt = 1;
break;
case 's':
client_config.script = optarg;
break;
case 'v':
printf("udhcpcd, version %s\n\n", VERSION);
break;
case 'I':
strcpy(iaid, optarg);
en_client_id = 1;
break;
case 'D':
strcpy(duid, optarg);
en_client_id = 1;
break;
case 'O':
strcpy(oui_125, optarg);
en_125 = 1;
break;
case 'S':
strcpy(sn_125, optarg);
en_125 = 1;
break;
case 'P':
strcpy(prod_125, optarg);
en_125 = 1;
break;
}
}
// brcm
if (strlen(session_path) > 0) {
sprintf(status_path, "%s/%s/%s", _PATH_WAN_DIR, session_path, _PATH_MSG);
sprintf(pid_path, "%s/%s/%s", _PATH_WAN_DIR, session_path, _PATH_PID);
}
OPEN_LOG("udhcpc");
#ifdef VERBOSE
cmsLog_setLevel(LOG_LEVEL_DEBUG);
#else
cmsLog_setLevel(DEFAULT_LOG_LEVEL);
#endif
LOG(LOG_INFO, "udhcp client (v%s) started", VERSION);
cmsMsg_init(EID_DHCPC, &msgHandle);
pid_fd = pidfile_acquire(client_config.pidfile);
pidfile_write_release(pid_fd);
if ((fd = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) >= 0) {
strcpy(ifr.ifr_name, client_config.interface);
if (ioctl(fd, SIOCGIFINDEX, &ifr) == 0) {
DEBUG(LOG_INFO, "adapter index %d", ifr.ifr_ifindex);
client_config.ifindex = ifr.ifr_ifindex;
} else {
LOG(LOG_ERR, "SIOCGIFINDEX failed! %s", strerror(errno));
exit_client(1);
}
if (ioctl(fd, SIOCGIFHWADDR, &ifr) == 0) {
memcpy(client_config.arp, ifr.ifr_hwaddr.sa_data, 6);
DEBUG(LOG_INFO, "adapter hardware address %02x:%02x:%02x:%02x:%02x:%02x",
client_config.arp[0], client_config.arp[1], client_config.arp[2],
client_config.arp[3], client_config.arp[4], client_config.arp[5]);
} else {
LOG(LOG_ERR, "SIOCGIFHWADDR failed! %s", strerror(errno));
exit_client(1);
}
} else {
LOG(LOG_ERR, "socket failed! %s", strerror(errno));
exit_client(1);
}
close(fd);
fd = -1;
/* setup signal handlers */
signal(SIGUSR1, renew_requested);
signal(SIGUSR2, release_requested);
signal(SIGTERM, terminate);
state = INIT_SELECTING;
// brcm
// run_script(NULL, "deconfig");
// brcm
setStatus(0);
for (;;) {
// brcm
if ((old_mode != listen_mode) || (fd == -1)) {
old_mode = listen_mode;
/*
* After dhcpc runs as daemon(backgroud)mode, fd 0-2 be closed.
* The sock fd may be 0.
*/
if (fd >= 0) {
close(fd);
fd = -1;
}
if (listen_mode == LISTEN_RAW) {
if ((fd = raw_socket(client_config.ifindex)) < 0) {
LOG(LOG_ERR, "couldn't create raw socket -- au revoir");
exit_client(0);
}
}
else if (listen_mode == LISTEN_KERNEL) {
if ((fd = listen_socket(INADDR_ANY, CLIENT_PORT, client_config.interface)) < 0) {
LOG(LOG_ERR, "couldn't create server socket -- au revoir");
exit_client(0);
}
} else
fd = -1;
}
tv.tv_sec = timeout - time(0);
tv.tv_usec = 0;
FD_ZERO(&rfds);
if (listen_mode) FD_SET(fd, &rfds);
if (tv.tv_sec > 0) {
retval = select(fd + 1, &rfds, NULL, NULL, &tv);
} else retval = 0; /* If we already timed out, fall through */
if (retval == 0) {
/* timeout dropped to zero */
switch (state) {
case INIT_SELECTING:
// brcm
setStatus(0);
if (packet_num < 3) {
if (packet_num == 0)
xid = random_xid();
/* send discover packet */
send_discover(xid, requested_ip); /* broadcast */
timeout = time(0) + ((packet_num == 2) ? REQ_TIMEOUT : 2);
packet_num++;
} else {
if (client_config.abort_if_no_lease) {
LOG(LOG_INFO,
"No lease, failing.");
exit_client(1);
}
/* wait to try again */
packet_num = 0;
timeout = time(0) + INIT_TIMEOUT;
}
break;
case RENEW_REQUESTED:
case REQUESTING:
if (packet_num < 3) {
/* send request packet */
if (state == RENEW_REQUESTED)
send_renew(xid, server_addr, requested_ip); /* unicast */
else send_selecting(xid, server_addr, requested_ip); /* broadcast */
timeout = time(0) + ((packet_num == 2) ? REQ_TIMEOUT : 2);
packet_num++;
} else {
/* timed out, go back to init state */
state = INIT_SELECTING;
timeout = time(0);
packet_num = 0;
listen_mode = LISTEN_RAW;
}
break;
case BOUND:
/* Lease is starting to run out, time to enter renewing state */
state = RENEWING;
listen_mode = LISTEN_KERNEL;
DEBUG(LOG_INFO, "Entering renew state");
/* fall right through */
case RENEWING:
/* Either set a new T1, or enter REBINDING state */
if ((t2 - t1) <= (lease / 14400 + 1)) {
/* timed out, enter rebinding state */
state = REBINDING;
timeout = time(0) + (t2 - t1);
DEBUG(LOG_INFO, "Entering rebinding state");
} else {
/* send a request packet */
send_renew(xid, server_addr, requested_ip); /* unicast */
t1 = (t2 - t1) / 2 + t1;
timeout = t1 + start;
}
break;
case REBINDING:
/* Either set a new T2, or enter INIT state */
if ((lease - t2) <= (lease / 14400 + 1)) {
/* timed out, enter init state */
state = INIT_SELECTING;
LOG(LOG_INFO, "Lease lost, entering init state");
run_script(NULL, "deconfig");
timeout = time(0);
packet_num = 0;
listen_mode = LISTEN_RAW;
} else {
/* send a request packet */
send_renew(xid, 0, requested_ip); /* broadcast */
t2 = (lease - t2) / 2 + t2;
timeout = t2 + start;
}
break;
case RELEASED:
/* yah, I know, *you* say it would never happen */
timeout = 0xffffffff;
break;
}
} else if (retval > 0 && listen_mode != LISTEN_NONE && FD_ISSET(fd, &rfds)) {
/* a packet is ready, read it */
if (listen_mode == LISTEN_KERNEL) {
if (get_packet(&packet, fd) < 0) continue;
} else {
if (get_raw_packet(&packet, fd) < 0) continue;
}
if (packet.xid != xid) {
DEBUG(LOG_INFO, "Ignoring XID %lx (our xid is %lx)",
(unsigned long) packet.xid, xid);
continue;
}
if ((message = (char *)get_option(&packet, DHCP_MESSAGE_TYPE)) == NULL) {
DEBUG(LOG_ERR, "couldnt get option from packet -- ignoring");
continue;
}
switch (state) {
case INIT_SELECTING:
/* Must be a DHCPOFFER to one of our xid's */
if (*message == DHCPOFFER) {
if ((temp = (char *)get_option(&packet, DHCP_SERVER_ID))) {
memcpy(&server_addr, temp, 4);
xid = packet.xid;
requested_ip = packet.yiaddr;
/* enter requesting state */
state = REQUESTING;
timeout = time(0);
packet_num = 0;
} else {
DEBUG(LOG_ERR, "No server ID in message");
}
}
break;
case RENEW_REQUESTED:
case REQUESTING:
case RENEWING:
case REBINDING:
if (*message == DHCPACK) {
if (!(temp = (char *)get_option(&packet, DHCP_LEASE_TIME))) {
LOG(LOG_ERR, "No lease time with ACK, using 1 hour lease");
lease = 60*60;
} else {
memcpy(&lease, temp, 4);
lease = ntohl(lease);
}
/* enter bound state */
t1 = lease / 2;
/* little fixed point for n * .875 */
t2 = (lease * 0x7) >> 3;
temp_addr.s_addr = packet.yiaddr;
LOG(LOG_INFO, "Lease of %s obtained, lease time %ld",
inet_ntoa(temp_addr), lease);
start = time(0);
timeout = t1 + start;
requested_ip = packet.yiaddr;
run_script(&packet,
((state == RENEWING || state == REBINDING) ? "renew" : "bound"));
state = BOUND;
listen_mode = LISTEN_NONE;
// brcm
close(fd);
fd = -1;
setStatus(1);
background();
} else if (*message == DHCPNAK) {
/* return to init state */
LOG(LOG_INFO, "Received DHCP NAK");
if (state != REQUESTING)
run_script(NULL, "deconfig");
state = INIT_SELECTING;
timeout = time(0);
requested_ip = 0;
packet_num = 0;
listen_mode = LISTEN_RAW;
// brcm
setStatus(0);
}
break;
case BOUND:
case RELEASED:
/* ignore all packets */
break;
}
} else if (retval == -1 && errno == EINTR) {