1 files changed, 129 insertions, 0 deletions
diff --git a/sbin/ipf/ipsend/arp.c b/sbin/ipf/ipsend/arp.c
new file mode 100644
index 000000000000..a9409093213f
--- /dev/null
+++ b/sbin/ipf/ipsend/arp.c
@@ -0,0 +1,129 @@
+
+/*
+ * arp.c (C) 1995-1998 Darren Reed
+ *
+ * See the IPFILTER.LICENCE file for details on licencing.
+ */
+#include <sys/types.h>
+#include <sys/socket.h>
+# include <sys/sockio.h>
+#include <sys/ioctl.h>
+#include <netinet/in_systm.h>
+#include <netinet/in.h>
+#include <net/if.h>
+#include <netinet/if_ether.h>
+# include <net/if_arp.h>
+#include <netinet/in.h>
+#include <netinet/ip.h>
+#include <netinet/ip_var.h>
+#include <netinet/tcp.h>
+#include <stdio.h>
+#include <errno.h>
+#include <netdb.h>
+#include "ipsend.h"
+#include "iplang/iplang.h"
+
+
+/*
+ * lookup host and return
+ * its IP address in address
+ * (4 bytes)
+ */
+int	resolve(char *host, char *address)
+{
+	struct	hostent	*hp;
+	u_long	add;
+
+	add = inet_addr(host);
+	if (add == -1)
+	    {
+		if (!(hp = gethostbyname(host)))
+		    {
+			fprintf(stderr, "unknown host: %s\n", host);
+			return (-1);
+		    }
+		bcopy((char *)hp->h_addr, (char *)address, 4);
+		return (0);
+	}
+	bcopy((char*)&add, address, 4);
+	return (0);
+}
+
+/*
+ * ARP for the MAC address corresponding
+ * to the IP address.  This taken from
+ * some BSD program, I cant remember which.
+ */
+int	arp(ip, ether)
+	char	*ip;
+	char	*ether;
+{
+	static	int	sfd = -1;
+	static	char	ethersave[6], ipsave[4];
+	struct	arpreq	ar;
+	struct	sockaddr_in	*sin, san;
+	struct	hostent	*hp;
+	int	fd;
+
+#ifdef	IPSEND
+	if (arp_getipv4(ip, ether) == 0)
+		return (0);
+#endif
+	if (!bcmp(ipsave, ip, 4)) {
+		bcopy(ethersave, ether, 6);
+		return (0);
+	}
+	fd = -1;
+	bzero((char *)&ar, sizeof(ar));
+	sin = (struct sockaddr_in *)&ar.arp_pa;
+	sin->sin_family = AF_INET;
+	bcopy(ip, (char *)&sin->sin_addr.s_addr, 4);
+	if ((hp = gethostbyaddr(ip, 4, AF_INET)))
+# if SOLARIS && (SOLARIS2 >= 10)
+		if (!(ether_hostton(hp->h_name, (struct ether_addr *)ether)))
+# else
+		if (!(ether_hostton(hp->h_name, ether)))
+# endif
+			goto savearp;
+
+	if (sfd == -1)
+		if ((sfd = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
+		    {
+			perror("arp: socket");
+			return (-1);
+		    }
+tryagain:
+	if (ioctl(sfd, SIOCGARP, (caddr_t)&ar) == -1)
+	    {
+		if (fd == -1)
+		    {
+			bzero((char *)&san, sizeof(san));
+			san.sin_family = AF_INET;
+			san.sin_port = htons(1);
+			bcopy(ip, &san.sin_addr.s_addr, 4);
+			fd = socket(AF_INET, SOCK_DGRAM, 0);
+			(void) sendto(fd, ip, 4, 0,
+				      (struct sockaddr *)&san, sizeof(san));
+			sleep(1);
+			(void) close(fd);
+			goto tryagain;
+		    }
+		fprintf(stderr, "(%s):", inet_ntoa(sin->sin_addr));
+		if (errno != ENXIO)
+			perror("SIOCGARP");
+		return (-1);
+	    }
+
+	if ((ar.arp_ha.sa_data[0] == 0) && (ar.arp_ha.sa_data[1] == 0) &&
+	    (ar.arp_ha.sa_data[2] == 0) && (ar.arp_ha.sa_data[3] == 0) &&
+	    (ar.arp_ha.sa_data[4] == 0) && (ar.arp_ha.sa_data[5] == 0)) {
+		fprintf(stderr, "(%s):", inet_ntoa(sin->sin_addr));
+		return (-1);
+	}
+
+	bcopy(ar.arp_ha.sa_data, ether, 6);
+savearp:
+	bcopy(ether, ethersave, 6);
+	bcopy(ip, ipsave, 4);
+	return (0);
+}