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-rw-r--r--workspace/networkDiscovery/dhcpcd/arp.c284
1 files changed, 0 insertions, 284 deletions
diff --git a/workspace/networkDiscovery/dhcpcd/arp.c b/workspace/networkDiscovery/dhcpcd/arp.c
deleted file mode 100644
index 794850c..0000000
--- a/workspace/networkDiscovery/dhcpcd/arp.c
+++ /dev/null
@@ -1,284 +0,0 @@
-/*
- * dhcpcd - DHCP client daemon
- * Copyright 2006-2008 Roy Marples <roy@marples.name>
- * All rights reserved
-
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/ioctl.h>
-#include <sys/socket.h>
-#include <netinet/in_systm.h>
-#ifdef __linux__
-#include <netinet/ether.h>
-#include <netpacket/packet.h>
-#endif
-#include <net/if.h>
-#include <net/if_arp.h>
-#include <arpa/inet.h>
-#include <errno.h>
-#include <poll.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "config.h"
-#include "common.h"
-#include "arp.h"
-#include "interface.h"
-#include "logger.h"
-#include "signal.h"
-#include "socket.h"
-
-/* These are really for IPV4LL */
-#define NPROBES 3
-#define PROBE_INTERVAL 200
-#define NCLAIMS 2
-#define CLAIM_INTERVAL 200
-
-/* Linux does not seem to define these handy macros */
-#ifndef ar_sha
-#define ar_sha(ap) (((caddr_t) ((ap) + 1)) + 0)
-#define ar_spa(ap) (((caddr_t) ((ap) + 1)) + (ap)->ar_hln)
-#define ar_tha(ap) (((caddr_t) ((ap) + 1)) + (ap)->ar_hln + (ap)->ar_pln)
-#define ar_tpa(ap) (((caddr_t) ((ap) + 1)) + 2 * (ap)->ar_hln + (ap)->ar_pln)
-#endif
-
-#ifndef arphdr_len
-#define arphdr_len2(ar_hln, ar_pln) (sizeof (struct arphdr) + \
- 2 * (ar_hln) + 2 * (ar_pln))
-#define arphdr_len(ap) (arphdr_len2 ((ap)->ar_hln, (ap)->ar_pln))
-#endif
-
-#ifdef ENABLE_ARP
-
-static int send_arp (const interface_t *iface, int op, struct in_addr sip,
- const unsigned char *taddr, struct in_addr tip)
-{
- struct arphdr *arp;
- size_t arpsize = arphdr_len2 (iface->hwlen, sizeof (sip));
- caddr_t tha;
- int retval;
-
- arp = xzalloc (arpsize);
- arp->ar_hrd = htons (iface->family);
- arp->ar_pro = htons (ETHERTYPE_IP);
- arp->ar_hln = iface->hwlen;
- arp->ar_pln = sizeof (sip);
- arp->ar_op = htons (op);
- memcpy (ar_sha (arp), iface->hwaddr, (size_t) arp->ar_hln);
- memcpy (ar_spa (arp), &sip, (size_t) arp->ar_pln);
- if (taddr) {
- /* NetBSD can return NULL from ar_tha, which is probably wrong
- * but we still need to deal with it */
- if (! (tha = ar_tha (arp))) {
- free (arp);
- errno = EINVAL;
- return (-1);
- }
- memcpy (tha, taddr, (size_t) arp->ar_hln);
- }
- memcpy (ar_tpa (arp), &tip, (size_t) arp->ar_pln);
-
- retval = send_packet (iface, ETHERTYPE_ARP,
- (unsigned char *) arp, arphdr_len (arp));
- free (arp);
- return (retval);
-}
-
-int arp_claim (interface_t *iface, struct in_addr address)
-{
- struct arphdr *reply = NULL;
- long timeout = 0;
- unsigned char *buffer;
- int retval = -1;
- int nprobes = 0;
- int nclaims = 0;
- struct in_addr null_address;
- struct pollfd fds[] = {
- { -1, POLLIN, 0 },
- { -1, POLLIN, 0 }
- };
-
- if (! iface)
- return (-1);
-
- if (! iface->arpable) {
- logger (LOG_DEBUG, "interface `%s' is not ARPable", iface->name);
- return (0);
- }
-
- if (! IN_LINKLOCAL (ntohl (iface->previous_address.s_addr)) &&
- ! IN_LINKLOCAL (ntohl (address.s_addr)))
- logger (LOG_INFO,
- "checking %s is available on attached networks",
- inet_ntoa (address));
-
- if (! open_socket (iface, ETHERTYPE_ARP))
- return (-1);
-
- fds[0].fd = signal_fd ();
- fds[1].fd = iface->fd;
-
- memset (&null_address, 0, sizeof (null_address));
-
- buffer = xmalloc (iface->buffer_length);
- reply = xmalloc (iface->buffer_length);
-
- for (;;) {
- size_t bufpos = 0;
- size_t buflen = iface->buffer_length;
- int bytes;
- int s = 0;
- struct timeval stopat;
- struct timeval now;
-
- /* Only poll if we have a timeout */
- if (timeout > 0) {
- s = poll (fds, 2, timeout);
- if (s == -1) {
- if (errno == EINTR) {
- if (signal_exists (NULL) == -1) {
- errno = 0;
- continue;
- } else
- break;
- }
-
- logger (LOG_ERR, "poll: `%s'",
- strerror (errno));
- break;
- }
- }
-
- /* Timed out */
- if (s == 0) {
- if (nprobes < NPROBES) {
- nprobes ++;
- timeout = PROBE_INTERVAL;
- logger (LOG_DEBUG, "sending ARP probe #%d",
- nprobes);
- if (send_arp (iface, ARPOP_REQUEST,
- null_address, NULL,
- address) == -1)
- break;
-
- /* IEEE1394 cannot set ARP target address
- * according to RFC2734 */
- if (nprobes >= NPROBES &&
- iface->family == ARPHRD_IEEE1394)
- nclaims = NCLAIMS;
- } else if (nclaims < NCLAIMS) {
- nclaims ++;
- timeout = CLAIM_INTERVAL;
- logger (LOG_DEBUG, "sending ARP claim #%d",
- nclaims);
- if (send_arp (iface, ARPOP_REQUEST,
- address, iface->hwaddr,
- address) == -1)
- break;
- } else {
- /* No replies, so done */
- retval = 0;
- break;
- }
-
- /* Setup our stop time */
- if (get_time (&stopat) != 0)
- break;
- stopat.tv_usec += timeout;
-
- continue;
- }
-
- /* We maybe ARP flooded, so check our time */
- if (get_time (&now) != 0)
- break;
- if (timercmp (&now, &stopat, >)) {
- timeout = 0;
- continue;
- }
-
- if (! fds[1].revents & POLLIN)
- continue;
-
- memset (buffer, 0, buflen);
- do {
- union {
- unsigned char *c;
- struct in_addr *a;
- } rp;
- union {
- unsigned char *c;
- struct ether_addr *a;
- } rh;
-
- memset (reply, 0, iface->buffer_length);
- if ((bytes = get_packet (iface, (unsigned char *) reply,
- buffer,
- &buflen, &bufpos)) == -1)
- break;
-
- /* Only these types are recognised */
- if (reply->ar_op != htons (ARPOP_REPLY))
- continue;
-
- /* Protocol must be IP. */
- if (reply->ar_pro != htons (ETHERTYPE_IP))
- continue;
- if (reply->ar_pln != sizeof (address))
- continue;
- if ((unsigned) bytes < sizeof (reply) +
- 2 * (4 + reply->ar_hln))
- continue;
-
- rp.c = (unsigned char *) ar_spa (reply);
- rh.c = (unsigned char *) ar_sha (reply);
-
- /* Ensure the ARP reply is for the our address */
- if (rp.a->s_addr != address.s_addr)
- continue;
-
- /* Some systems send a reply back from our hwaddress,
- * which is wierd */
- if (reply->ar_hln == iface->hwlen &&
- memcmp (rh.c, iface->hwaddr, iface->hwlen) == 0)
- continue;
-
- logger (LOG_ERR, "ARPOP_REPLY received from %s (%s)",
- inet_ntoa (*rp.a),
- hwaddr_ntoa (rh.c, (size_t) reply->ar_hln));
- retval = -1;
- goto eexit;
- } while (bufpos != 0);
- }
-
-eexit:
- close (iface->fd);
- iface->fd = -1;
- free (buffer);
- free (reply);
- return (retval);
-}
-#endif
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