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authorMike Frysinger2006-03-23 23:44:29 +0000
committerMike Frysinger2006-03-23 23:44:29 +0000
commit787140df3992ccc3ebdc09f6d2dcb584f580f49f (patch)
tree666fdb071676c676f52bdc204f6df801b17e7196 /networking/udhcp/arpping.c
parente0fe93759339a9e043cd0489f5bfabd59b5fcb78 (diff)
downloadbusybox-787140df3992ccc3ebdc09f6d2dcb584f580f49f.zip
busybox-787140df3992ccc3ebdc09f6d2dcb584f580f49f.tar.gz
remove in place of external link
Diffstat (limited to 'networking/udhcp/arpping.c')
-rw-r--r--networking/udhcp/arpping.c106
1 files changed, 0 insertions, 106 deletions
diff --git a/networking/udhcp/arpping.c b/networking/udhcp/arpping.c
deleted file mode 100644
index 4831d43..0000000
--- a/networking/udhcp/arpping.c
+++ /dev/null
@@ -1,106 +0,0 @@
-/*
- * arpping.c
- *
- * Mostly stolen from: dhcpcd - DHCP client daemon
- * by Yoichi Hariguchi <yoichi@fore.com>
- */
-
-#include <sys/time.h>
-#include <time.h>
-#include <sys/socket.h>
-#include <netinet/if_ether.h>
-#include <net/if_arp.h>
-#include <netinet/in.h>
-#include <string.h>
-#include <unistd.h>
-#include <errno.h>
-
-#include "dhcpd.h"
-#include "arpping.h"
-#include "common.h"
-
-/* args: yiaddr - what IP to ping
- * ip - our ip
- * mac - our arp address
- * interface - interface to use
- * retn: 1 addr free
- * 0 addr used
- * -1 error
- */
-
-/* FIXME: match response against chaddr */
-int arpping(uint32_t yiaddr, uint32_t ip, uint8_t *mac, char *interface)
-{
-
- int timeout = 2;
- int optval = 1;
- int s; /* socket */
- int rv = 1; /* return value */
- struct sockaddr addr; /* for interface name */
- struct arpMsg arp;
- fd_set fdset;
- struct timeval tm;
- time_t prevTime;
-
-
- if ((s = socket (PF_PACKET, SOCK_PACKET, htons(ETH_P_ARP))) == -1) {
-#ifdef IN_BUSYBOX
- LOG(LOG_ERR, bb_msg_can_not_create_raw_socket);
-#else
- LOG(LOG_ERR, "Could not open raw socket");
-#endif
- return -1;
- }
-
- if (setsockopt(s, SOL_SOCKET, SO_BROADCAST, &optval, sizeof(optval)) == -1) {
- LOG(LOG_ERR, "Could not setsocketopt on raw socket");
- close(s);
- return -1;
- }
-
- /* send arp request */
- memset(&arp, 0, sizeof(arp));
- memcpy(arp.h_dest, MAC_BCAST_ADDR, 6); /* MAC DA */
- memcpy(arp.h_source, mac, 6); /* MAC SA */
- arp.h_proto = htons(ETH_P_ARP); /* protocol type (Ethernet) */
- arp.htype = htons(ARPHRD_ETHER); /* hardware type */
- arp.ptype = htons(ETH_P_IP); /* protocol type (ARP message) */
- arp.hlen = 6; /* hardware address length */
- arp.plen = 4; /* protocol address length */
- arp.operation = htons(ARPOP_REQUEST); /* ARP op code */
- memcpy(arp.sInaddr, &ip, sizeof(ip)); /* source IP address */
- memcpy(arp.sHaddr, mac, 6); /* source hardware address */
- memcpy(arp.tInaddr, &yiaddr, sizeof(yiaddr)); /* target IP address */
-
- memset(&addr, 0, sizeof(addr));
- strcpy(addr.sa_data, interface);
- if (sendto(s, &arp, sizeof(arp), 0, &addr, sizeof(addr)) < 0)
- rv = 0;
-
- /* wait arp reply, and check it */
- tm.tv_usec = 0;
- prevTime = uptime();
- while (timeout > 0) {
- FD_ZERO(&fdset);
- FD_SET(s, &fdset);
- tm.tv_sec = timeout;
- if (select(s + 1, &fdset, (fd_set *) NULL, (fd_set *) NULL, &tm) < 0) {
- DEBUG(LOG_ERR, "Error on ARPING request: %m");
- if (errno != EINTR) rv = 0;
- } else if (FD_ISSET(s, &fdset)) {
- if (recv(s, &arp, sizeof(arp), 0) < 0 ) rv = 0;
- if (arp.operation == htons(ARPOP_REPLY) &&
- bcmp(arp.tHaddr, mac, 6) == 0 &&
- *((uint32_t *) arp.sInaddr) == yiaddr) {
- DEBUG(LOG_INFO, "Valid arp reply receved for this address");
- rv = 0;
- break;
- }
- }
- timeout -= uptime() - prevTime;
- prevTime = uptime();
- }
- close(s);
- DEBUG(LOG_INFO, "%salid arp replies for this address", rv ? "No v" : "V");
- return rv;
-}