+/* vi: set sw=4 ts=4: */
/* dhcpc.c
*
* udhcp DHCP client
* 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"
.arp = "\0\0\0\0\0\0", /* appease gcc-3.0 */
};
-#ifndef IN_BUSYBOX
-static void ATTRIBUTE_NORETURN show_usage(void)
-{
- printf(
-"Usage: udhcpc [OPTIONS]\n\n"
-" -c, --clientid=CLIENTID Set client identifier - type is first char\n"
-" -C, --clientid-none Suppress default client identifier\n"
-" -V, --vendorclass=CLASSID Set vendor class identifier\n"
-" -H, --hostname=HOSTNAME Client hostname\n"
-" -h Alias for -H\n"
-" -F, --fqdn=FQDN Client fully qualified domain name\n"
-" -f, --foreground Do not fork after getting lease\n"
-" -b, --background Fork to background if lease cannot be\n"
-" immediately negotiated.\n"
-" -i, --interface=INTERFACE Interface to use (default: eth0)\n"
-" -n, --now Exit with failure if lease cannot be\n"
-" immediately negotiated.\n"
-" -p, --pidfile=file Store process ID of daemon in file\n"
-" -q, --quit Quit after obtaining lease\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;
-#endif
-
-
/* just a little helper */
static void change_mode(int new_mode)
{
- DEBUG(LOG_INFO, "entering %s listen mode",
+ DEBUG("entering %s listen mode",
new_mode ? (new_mode == 1 ? "kernel" : "raw") : "none");
if (fd >= 0) close(fd);
fd = -1;
/* perform a renew */
static void perform_renew(void)
{
- LOG(LOG_INFO, "Performing a DHCP renew");
+ bb_info_msg("Performing a DHCP renew");
switch (state) {
case BOUND:
change_mode(LISTEN_KERNEL);
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);
temp_addr.s_addr = server_addr;
sprintf(buffer, "%s", inet_ntoa(temp_addr));
temp_addr.s_addr = requested_ip;
- LOG(LOG_INFO, "Unicasting a release of %s to %s",
+ bb_info_msg("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");
+ bb_info_msg("Entering released state");
change_mode(LISTEN_NONE);
state = RELEASED;
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;
}
-#ifdef COMBINED_BINARY
int udhcpc_main(int argc, char *argv[])
-#else
-int main(int argc, char *argv[])
-#endif
{
uint8_t *temp, *message;
unsigned long t1 = 0, t2 = 0, xid = 0;
{"script", required_argument, 0, 's'},
{"timeout", required_argument, 0, 'T'},
{"version", no_argument, 0, 'v'},
- {"retries", required_argument, 0, 't'},
+ {"retries", required_argument, 0, 't'},
{0, 0, 0, 0}
};
switch (c) {
case 'c':
- if (no_clientid) show_usage();
+ if (no_clientid) bb_show_usage();
len = strlen(optarg) > 255 ? 255 : strlen(optarg);
free(client_config.clientid);
client_config.clientid = xmalloc(len + 2);
strncpy((char*)client_config.clientid + OPT_DATA, optarg, len);
break;
case 'C':
- if (client_config.clientid) show_usage();
+ if (client_config.clientid) bb_show_usage();
no_clientid = 1;
break;
case 'V':
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:
- show_usage();
+ bb_show_usage();
}
}
/* 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);
+ "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 (;;) {
else
fd = raw_socket(client_config.ifindex);
if (fd < 0) {
- LOG(LOG_ERR, "FATAL: couldn't listen on socket, %m");
+ bb_perror_msg("FATAL: couldn't listen on socket");
return 0;
}
}
max_fd = udhcp_sp_fd_set(&rfds, fd);
if (tv.tv_sec > 0) {
- DEBUG(LOG_INFO, "Waiting on select...");
+ DEBUG("Waiting on select...");
retval = select(max_fd + 1, &rfds, NULL, NULL, &tv);
} else retval = 0; /* If we already timed out, fall through */
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.");
+ bb_info_msg("No lease, forking to background");
client_background();
} else if (client_config.abort_if_no_lease) {
- LOG(LOG_INFO, "No lease, failing.");
+ bb_info_msg("No lease, failing");
return 1;
}
/* wait to try again */
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;
/* Lease is starting to run out, time to enter renewing state */
state = RENEWING;
change_mode(LISTEN_KERNEL);
- DEBUG(LOG_INFO, "Entering renew state");
+ DEBUG("Entering renew state");
/* fall right through */
case RENEWING:
/* Either set a new T1, or enter REBINDING state */
/* timed out, enter rebinding state */
state = REBINDING;
timeout = now + (t2 - t1);
- DEBUG(LOG_INFO, "Entering rebinding state");
+ DEBUG("Entering rebinding state");
} else {
/* send a request packet */
send_renew(xid, server_addr, requested_ip); /* unicast */
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");
+ bb_info_msg("Lease lost, entering init state");
+ 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) {
- DEBUG(LOG_INFO, "error on read, %m, reopening socket");
+ DEBUG("error on read, %s, reopening socket", strerror(errno));
change_mode(listen_mode); /* just close and reopen */
}
if (len < 0) continue;
if (packet.xid != xid) {
- DEBUG(LOG_INFO, "Ignoring XID %lx (our xid is %lx)",
+ DEBUG("Ignoring XID %lx (our xid is %lx)",
(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");
+ DEBUG("Packet does not have our chaddr - ignoring");
continue;
}
if ((message = get_option(&packet, DHCP_MESSAGE_TYPE)) == NULL) {
- DEBUG(LOG_ERR, "couldnt get option from packet -- ignoring");
+ bb_error_msg("Couldnt get option from packet - ignoring");
continue;
}
timeout = now;
packet_num = 0;
} else {
- DEBUG(LOG_ERR, "No server ID in message");
+ bb_error_msg("No server ID in message");
}
}
break;
case REBINDING:
if (*message == DHCPACK) {
if (!(temp = get_option(&packet, DHCP_LEASE_TIME))) {
- LOG(LOG_ERR, "No lease time with ACK, using 1 hour lease");
+ bb_error_msg("No lease time with ACK, using 1 hour lease");
lease = 60 * 60;
} else {
memcpy(&lease, temp, 4);
/* 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",
+ bb_info_msg("Lease of %s obtained, lease time %ld",
inet_ntoa(temp_addr), lease);
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");
+ bb_info_msg("Received DHCP 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;
perform_release();
break;
case SIGTERM:
- LOG(LOG_INFO, "Received SIGTERM");
+ bb_info_msg("Received SIGTERM");
return 0;
}
} else if (retval == -1 && errno == EINTR) {
/* a signal was caught */
} else {
/* An error occured */
- DEBUG(LOG_ERR, "Error on select");
+ bb_perror_msg("select");
}
}
projects / oweals / busybox.git / blobdiff