*
* Russ Dill <Russ.Dill@asu.edu> July 2001
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
*/
-#include <sys/time.h>
#include <sys/file.h>
#include <unistd.h>
#include <getopt.h>
#include "options.h"
#include "clientpacket.h"
#include "clientsocket.h"
-#include "script.h"
#include "socket.h"
#include "signalpipe.h"
.hostname = NULL,
.fqdn = NULL,
.ifindex = 0,
+ .retries = 3,
+ .timeout = 3,
.arp = "\0\0\0\0\0\0", /* appease gcc-3.0 */
};
#ifndef IN_BUSYBOX
-static void __attribute__ ((noreturn)) show_usage(void)
+static void ATTRIBUTE_NORETURN show_usage(void)
{
printf(
"Usage: udhcpc [OPTIONS]\n\n"
" -r, --request=IP IP address to request (default: none)\n"
" -s, --script=file Run file at dhcp events (default:\n"
" " DEFAULT_SCRIPT ")\n"
+" -T, --timeout=seconds Try to get the lease for the amount of\n"
+" seconds (default: 3)\n"
+" -t, --retries=NUM Send up to NUM request packets\n"
" -v, --version Display version\n"
);
exit(0);
}
#else
#define show_usage bb_show_usage
-extern void show_usage(void) __attribute__ ((noreturn));
+extern void show_usage(void) ATTRIBUTE_NORETURN;
#endif
state = RENEW_REQUESTED;
break;
case RENEW_REQUESTED: /* impatient are we? fine, square 1 */
- run_script(NULL, "deconfig");
+ udhcp_run_script(NULL, "deconfig");
case REQUESTING:
case RELEASED:
change_mode(LISTEN_RAW);
LOG(LOG_INFO, "Unicasting a release of %s to %s",
inet_ntoa(temp_addr), buffer);
send_release(server_addr, requested_ip); /* unicast */
- run_script(NULL, "deconfig");
+ udhcp_run_script(NULL, "deconfig");
}
LOG(LOG_INFO, "Entering released state");
static void client_background(void)
{
- background(client_config.pidfile);
+ udhcp_background(client_config.pidfile);
client_config.foreground = 1; /* Do not fork again. */
client_config.background_if_no_lease = 0;
}
{"hostname", required_argument, 0, 'h'},
{"fqdn", required_argument, 0, 'F'},
{"interface", required_argument, 0, 'i'},
- {"now", no_argument, 0, 'n'},
+ {"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'},
+ {"timeout", required_argument, 0, 'T'},
{"version", no_argument, 0, 'v'},
+ {"retries", required_argument, 0, 't'},
{0, 0, 0, 0}
};
/* get options */
while (1) {
int option_index = 0;
- c = getopt_long(argc, argv, "c:CV:fbH:h:F:i:np:qr:s:v", arg_options, &option_index);
+ c = getopt_long(argc, argv, "c:CV:fbH:h:F:i:np:qr:s:T:t:v", arg_options, &option_index);
if (c == -1) break;
switch (c) {
case 'c':
if (no_clientid) show_usage();
len = strlen(optarg) > 255 ? 255 : strlen(optarg);
- if (client_config.clientid) free(client_config.clientid);
+ free(client_config.clientid);
client_config.clientid = xmalloc(len + 2);
client_config.clientid[OPT_CODE] = DHCP_CLIENT_ID;
client_config.clientid[OPT_LEN] = len;
client_config.clientid[OPT_DATA] = '\0';
- strncpy(client_config.clientid + OPT_DATA, optarg, len);
+ strncpy((char*)client_config.clientid + OPT_DATA, optarg, len);
break;
case 'C':
if (client_config.clientid) show_usage();
break;
case 'V':
len = strlen(optarg) > 255 ? 255 : strlen(optarg);
- if (client_config.vendorclass) free(client_config.vendorclass);
+ free(client_config.vendorclass);
client_config.vendorclass = xmalloc(len + 2);
client_config.vendorclass[OPT_CODE] = DHCP_VENDOR;
client_config.vendorclass[OPT_LEN] = len;
- strncpy(client_config.vendorclass + OPT_DATA, optarg, len);
+ strncpy((char*)client_config.vendorclass + OPT_DATA, optarg, len);
break;
case 'f':
client_config.foreground = 1;
case 'h':
case 'H':
len = strlen(optarg) > 255 ? 255 : strlen(optarg);
- if (client_config.hostname) free(client_config.hostname);
+ free(client_config.hostname);
client_config.hostname = xmalloc(len + 2);
client_config.hostname[OPT_CODE] = DHCP_HOST_NAME;
client_config.hostname[OPT_LEN] = len;
- strncpy(client_config.hostname + 2, optarg, len);
+ strncpy((char*)client_config.hostname + 2, optarg, len);
break;
case 'F':
len = strlen(optarg) > 255 ? 255 : strlen(optarg);
- if (client_config.fqdn) free(client_config.fqdn);
+ free(client_config.fqdn);
client_config.fqdn = xmalloc(len + 5);
client_config.fqdn[OPT_CODE] = DHCP_FQDN;
client_config.fqdn[OPT_LEN] = len + 3;
client_config.fqdn[OPT_LEN + 1] = 0x1;
client_config.fqdn[OPT_LEN + 2] = 0;
client_config.fqdn[OPT_LEN + 3] = 0;
- strncpy(client_config.fqdn + 5, optarg, len);
+ strncpy((char*)client_config.fqdn + 5, optarg, len);
break;
case 'i':
client_config.interface = optarg;
case 's':
client_config.script = optarg;
break;
+ case 'T':
+ client_config.timeout = atoi(optarg);
+ break;
+ case 't':
+ client_config.retries = atoi(optarg);
+ break;
case 'v':
- printf("udhcpcd, version %s\n\n", VERSION);
+ printf("version %s\n\n", BB_VER);
return 0;
break;
default:
}
/* Start the log, sanitize fd's, and write a pid file */
- start_log_and_pid("udhcpc", client_config.pidfile);
+ udhcp_start_log_and_pid("udhcpc", client_config.pidfile);
if (read_interface(client_config.interface, &client_config.ifindex,
NULL, client_config.arp) < 0)
}
if (!client_config.vendorclass) {
- client_config.vendorclass = xmalloc(sizeof("udhcp "VERSION) + 2);
+ client_config.vendorclass = xmalloc(sizeof("udhcp "BB_VER) + 2);
client_config.vendorclass[OPT_CODE] = DHCP_VENDOR;
- client_config.vendorclass[OPT_LEN] = sizeof("udhcp "VERSION) - 1;
+ client_config.vendorclass[OPT_LEN] = sizeof("udhcp "BB_VER) - 1;
client_config.vendorclass[OPT_DATA] = 1;
- memcpy(&client_config.vendorclass[OPT_DATA],
- "udhcp "VERSION, sizeof("udhcp "VERSION) - 1);
+ memcpy(&client_config.vendorclass[OPT_DATA],
+ "udhcp "BB_VER, sizeof("udhcp "BB_VER) - 1);
}
udhcp_sp_setup();
state = INIT_SELECTING;
- run_script(NULL, "deconfig");
+ udhcp_run_script(NULL, "deconfig");
change_mode(LISTEN_RAW);
for (;;) {
/* timeout dropped to zero */
switch (state) {
case INIT_SELECTING:
- if (packet_num < 3) {
+ if (packet_num < client_config.retries) {
if (packet_num == 0)
xid = random_xid();
/* send discover packet */
send_discover(xid, requested_ip); /* broadcast */
- timeout = now + ((packet_num == 2) ? 4 : 2);
+ timeout = now + client_config.timeout;
packet_num++;
} else {
- run_script(NULL, "leasefail");
+ udhcp_run_script(NULL, "leasefail");
if (client_config.background_if_no_lease) {
LOG(LOG_INFO, "No lease, forking to background.");
client_background();
} else if (client_config.abort_if_no_lease) {
LOG(LOG_INFO, "No lease, failing.");
return 1;
- }
+ }
/* wait to try again */
packet_num = 0;
timeout = now + 60;
break;
case RENEW_REQUESTED:
case REQUESTING:
- if (packet_num < 3) {
+ if (packet_num < client_config.retries) {
/* send request packet */
if (state == RENEW_REQUESTED)
send_renew(xid, server_addr, requested_ip); /* unicast */
packet_num++;
} else {
/* timed out, go back to init state */
- if (state == RENEW_REQUESTED) run_script(NULL, "deconfig");
+ if (state == RENEW_REQUESTED) udhcp_run_script(NULL, "deconfig");
state = INIT_SELECTING;
timeout = now;
packet_num = 0;
/* timed out, enter init state */
state = INIT_SELECTING;
LOG(LOG_INFO, "Lease lost, entering init state");
- run_script(NULL, "deconfig");
+ udhcp_run_script(NULL, "deconfig");
timeout = now;
packet_num = 0;
change_mode(LISTEN_RAW);
/* a packet is ready, read it */
if (listen_mode == LISTEN_KERNEL)
- len = get_packet(&packet, fd);
+ len = udhcp_get_packet(&packet, fd);
else len = get_raw_packet(&packet, fd);
if (len == -1 && errno != EINTR) {
(unsigned long) packet.xid, xid);
continue;
}
+
/* Ignore packets that aren't for us */
if (memcmp(packet.chaddr, client_config.arp, 6)) {
DEBUG(LOG_INFO, "packet does not have our chaddr -- ignoring");
start = now;
timeout = t1 + start;
requested_ip = packet.yiaddr;
- run_script(&packet,
+ udhcp_run_script(&packet,
((state == RENEWING || state == REBINDING) ? "renew" : "bound"));
state = BOUND;
} else if (*message == DHCPNAK) {
/* return to init state */
LOG(LOG_INFO, "Received DHCP NAK");
- run_script(&packet, "nak");
+ udhcp_run_script(&packet, "nak");
if (state != REQUESTING)
- run_script(NULL, "deconfig");
+ udhcp_run_script(NULL, "deconfig");
state = INIT_SELECTING;
timeout = now;
requested_ip = 0;
projects / oweals / busybox.git / blobdiff