Rearrange bootpd

1 files changed, 294 insertions, 0 deletions

diff --git a/libexec/bootpd/hwaddr.c b/libexec/bootpd/hwaddr.c
new file mode 100644
index 0000000..840b953
--- /dev/null
+++ b/libexec/bootpd/hwaddr.c
@@ -0,0 +1,294 @@
+/*
+ * hwaddr.c - routines that deal with hardware addresses.
+ * (i.e. Ethernet)
+ */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+
+#if defined(SUNOS) || defined(SVR4)
+#include <sys/sockio.h>
+#endif
+#ifdef	SVR4
+#include <sys/stream.h>
+#include <stropts.h>
+#include <fcntl.h>
+#endif
+
+#include <net/if_arp.h>
+#include <netinet/in.h>
+#include <stdio.h>
+#ifndef	NO_UNISTD
+#include <unistd.h>
+#endif
+#include <syslog.h>
+
+#ifndef USE_BFUNCS
+/* Yes, memcpy is OK here (no overlapped copies). */
+#include <memory.h>
+#define bcopy(a,b,c)    memcpy(b,a,c)
+#define bzero(p,l)      memset(p,0,l)
+#define bcmp(a,b,c)     memcmp(a,b,c)
+#endif
+
+/* For BSD 4.4, set arp entry by writing to routing socket */
+#if defined(BSD)
+#if BSD >= 199306
+extern int bsd_arp_set __P((struct in_addr *, char *, int));
+#endif
+#endif
+
+#include "bptypes.h"
+#include "hwaddr.h"
+#include "report.h"
+
+extern int debug;
+
+/*
+ * Hardware address lengths (in bytes) and network name based on hardware
+ * type code.  List in order specified by Assigned Numbers RFC; Array index
+ * is hardware type code.  Entries marked as zero are unknown to the author
+ * at this time.  .  .  .
+ */
+
+struct hwinfo hwinfolist[] =
+{
+	{0, "Reserved"},			/* Type 0:  Reserved (don't use this)   */
+	{6, "Ethernet"},			/* Type 1:  10Mb Ethernet (48 bits)	*/
+	{1, "3Mb Ethernet"},		/* Type 2:   3Mb Ethernet (8 bits)	*/
+	{0, "AX.25"},				/* Type 3:  Amateur Radio AX.25		*/
+	{1, "ProNET"},				/* Type 4:  Proteon ProNET Token Ring   */
+	{0, "Chaos"},				/* Type 5:  Chaos			*/
+	{6, "IEEE 802"},			/* Type 6:  IEEE 802 Networks		*/
+	{0, "ARCNET"}				/* Type 7:  ARCNET			*/
+};
+int hwinfocnt = sizeof(hwinfolist) / sizeof(hwinfolist[0]);
+
+
+/*
+ * Setup the arp cache so that IP address 'ia' will be temporarily
+ * bound to hardware address 'ha' of length 'len'.
+ */
+void
+setarp(s, ia, ha, len)
+	int s;						/* socket fd */
+	struct in_addr *ia;
+	u_char *ha;
+	int len;
+{
+#ifdef	SIOCSARP
+	struct arpreq arpreq;		/* Arp request ioctl block */
+	struct sockaddr_in *si;
+#ifdef	SVR4
+	int fd;
+	struct strioctl iocb;
+#endif	/* SVR4 */
+
+	bzero((caddr_t) & arpreq, sizeof(arpreq));
+	arpreq.arp_flags = ATF_INUSE | ATF_COM;
+
+	/* Set up the protocol address. */
+	arpreq.arp_pa.sa_family = AF_INET;
+	si = (struct sockaddr_in *) &arpreq.arp_pa;
+	si->sin_addr = *ia;
+
+	/* Set up the hardware address. */
+	bcopy(ha, arpreq.arp_ha.sa_data, len);
+
+#ifdef	SVR4
+	/*
+	 * And now the stuff for System V Rel 4.x which does not
+	 * appear to allow SIOCxxx ioctls on a socket descriptor.
+	 * Thanks to several people: (all sent the same fix)
+	 *   Barney Wolff <barney@databus.com>,
+	 *   bear@upsys.se (Bj|rn Sj|holm),
+	 *   Michael Kuschke <Michael.Kuschke@Materna.DE>,
+	 */
+	if ((fd=open("/dev/arp", O_RDWR)) < 0) {
+	    report(LOG_ERR, "open /dev/arp: %s\n", get_errmsg());
+	}
+	iocb.ic_cmd = SIOCSARP;
+	iocb.ic_timout = 0;
+	iocb.ic_dp = (char *)&arpreq;
+	iocb.ic_len = sizeof(arpreq);
+	if (ioctl(fd, I_STR, (caddr_t)&iocb) < 0) {
+	    report(LOG_ERR, "ioctl I_STR: %s\n", get_errmsg());
+	}
+	close (fd);
+
+#else	/* SVR4 */
+	/*
+	 * On SunOS, the ioctl sometimes returns ENXIO, and it
+	 * appears to happen when the ARP cache entry you tried
+	 * to add is already in the cache.  (Sigh...)
+	 * XXX - Should this error simply be ignored? -gwr
+	 */
+	if (ioctl(s, SIOCSARP, (caddr_t) & arpreq) < 0) {
+		report(LOG_ERR, "ioctl SIOCSARP: %s", get_errmsg());
+	}
+#endif	/* SVR4 */
+#else	/* SIOCSARP */
+#if defined(BSD) && (BSD >= 199306)
+	bsd_arp_set(ia, ha, len);
+#else	/* Not BSD 4.4, and SIOCSARP not defined */
+	/*
+	 * Oh well, SIOCSARP is not defined.  Just run arp(8).
+	 * XXX - Gag!
+	 */
+	char buf[256];
+	int status;
+
+	sprintf(buf, "arp -s %s %s temp",
+			inet_ntoa(*ia), haddrtoa(ha, len));
+	if (debug > 2)
+		report(LOG_INFO, buf);
+	status = system(buf);
+	if (status)
+		report(LOG_ERR, "arp failed, exit code=0x%x", status);
+	return;
+#endif /* ! 4.4 BSD */
+#endif	/* SIOCSARP */
+}
+
+
+/*
+ * Convert a hardware address to an ASCII string.
+ */
+char *
+haddrtoa(haddr, hlen)
+	u_char *haddr;
+	int hlen;
+{
+	static char haddrbuf[3 * MAXHADDRLEN + 1];
+	char *bufptr;
+
+	if (hlen > MAXHADDRLEN)
+		hlen = MAXHADDRLEN;
+
+	bufptr = haddrbuf;
+	while (hlen > 0) {
+		sprintf(bufptr, "%02X:", (unsigned) (*haddr++ & 0xFF));
+		bufptr += 3;
+		hlen--;
+	}
+	bufptr[-1] = 0;
+	return (haddrbuf);
+}
+
+
+/*
+ * haddr_conv802()
+ * --------------
+ *
+ * Converts a backwards address to a canonical address and a canonical address
+ * to a backwards address.
+ *
+ * INPUTS:
+ *  adr_in - pointer to six byte string to convert (unsigned char *)
+ *  addr_len - how many bytes to convert
+ *
+ * OUTPUTS:
+ *  addr_out - The string is updated to contain the converted address.
+ *
+ * CALLER:
+ *  many
+ *
+ * DATA:
+ *  Uses conv802table to bit-reverse the address bytes.
+ */
+
+static u_char conv802table[256] =
+{
+	/* 0x00 */ 0x00, 0x80, 0x40, 0xC0, 0x20, 0xA0, 0x60, 0xE0,
+	/* 0x08 */ 0x10, 0x90, 0x50, 0xD0, 0x30, 0xB0, 0x70, 0xF0,
+	/* 0x10 */ 0x08, 0x88, 0x48, 0xC8, 0x28, 0xA8, 0x68, 0xE8,
+	/* 0x18 */ 0x18, 0x98, 0x58, 0xD8, 0x38, 0xB8, 0x78, 0xF8,
+	/* 0x20 */ 0x04, 0x84, 0x44, 0xC4, 0x24, 0xA4, 0x64, 0xE4,
+	/* 0x28 */ 0x14, 0x94, 0x54, 0xD4, 0x34, 0xB4, 0x74, 0xF4,
+	/* 0x30 */ 0x0C, 0x8C, 0x4C, 0xCC, 0x2C, 0xAC, 0x6C, 0xEC,
+	/* 0x38 */ 0x1C, 0x9C, 0x5C, 0xDC, 0x3C, 0xBC, 0x7C, 0xFC,
+	/* 0x40 */ 0x02, 0x82, 0x42, 0xC2, 0x22, 0xA2, 0x62, 0xE2,
+	/* 0x48 */ 0x12, 0x92, 0x52, 0xD2, 0x32, 0xB2, 0x72, 0xF2,
+	/* 0x50 */ 0x0A, 0x8A, 0x4A, 0xCA, 0x2A, 0xAA, 0x6A, 0xEA,
+	/* 0x58 */ 0x1A, 0x9A, 0x5A, 0xDA, 0x3A, 0xBA, 0x7A, 0xFA,
+	/* 0x60 */ 0x06, 0x86, 0x46, 0xC6, 0x26, 0xA6, 0x66, 0xE6,
+	/* 0x68 */ 0x16, 0x96, 0x56, 0xD6, 0x36, 0xB6, 0x76, 0xF6,
+	/* 0x70 */ 0x0E, 0x8E, 0x4E, 0xCE, 0x2E, 0xAE, 0x6E, 0xEE,
+	/* 0x78 */ 0x1E, 0x9E, 0x5E, 0xDE, 0x3E, 0xBE, 0x7E, 0xFE,
+	/* 0x80 */ 0x01, 0x81, 0x41, 0xC1, 0x21, 0xA1, 0x61, 0xE1,
+	/* 0x88 */ 0x11, 0x91, 0x51, 0xD1, 0x31, 0xB1, 0x71, 0xF1,
+	/* 0x90 */ 0x09, 0x89, 0x49, 0xC9, 0x29, 0xA9, 0x69, 0xE9,
+	/* 0x98 */ 0x19, 0x99, 0x59, 0xD9, 0x39, 0xB9, 0x79, 0xF9,
+	/* 0xA0 */ 0x05, 0x85, 0x45, 0xC5, 0x25, 0xA5, 0x65, 0xE5,
+	/* 0xA8 */ 0x15, 0x95, 0x55, 0xD5, 0x35, 0xB5, 0x75, 0xF5,
+	/* 0xB0 */ 0x0D, 0x8D, 0x4D, 0xCD, 0x2D, 0xAD, 0x6D, 0xED,
+	/* 0xB8 */ 0x1D, 0x9D, 0x5D, 0xDD, 0x3D, 0xBD, 0x7D, 0xFD,
+	/* 0xC0 */ 0x03, 0x83, 0x43, 0xC3, 0x23, 0xA3, 0x63, 0xE3,
+	/* 0xC8 */ 0x13, 0x93, 0x53, 0xD3, 0x33, 0xB3, 0x73, 0xF3,
+	/* 0xD0 */ 0x0B, 0x8B, 0x4B, 0xCB, 0x2B, 0xAB, 0x6B, 0xEB,
+	/* 0xD8 */ 0x1B, 0x9B, 0x5B, 0xDB, 0x3B, 0xBB, 0x7B, 0xFB,
+	/* 0xE0 */ 0x07, 0x87, 0x47, 0xC7, 0x27, 0xA7, 0x67, 0xE7,
+	/* 0xE8 */ 0x17, 0x97, 0x57, 0xD7, 0x37, 0xB7, 0x77, 0xF7,
+	/* 0xF0 */ 0x0F, 0x8F, 0x4F, 0xCF, 0x2F, 0xAF, 0x6F, 0xEF,
+	/* 0xF8 */ 0x1F, 0x9F, 0x5F, 0xDF, 0x3F, 0xBF, 0x7F, 0xFF,
+};
+
+void
+haddr_conv802(addr_in, addr_out, len)
+	register u_char *addr_in, *addr_out;
+	int len;
+{
+	u_char *lim;
+
+	lim = addr_out + len;
+	while (addr_out < lim)
+		*addr_out++ = conv802table[*addr_in++];
+}
+
+#if 0
+/*
+ * For the record, here is a program to generate the
+ * bit-reverse table above.
+ */
+static int
+bitrev(n)
+	int n;
+{
+	int i, r;
+
+	r = 0;
+	for (i = 0; i < 8; i++) {
+		r <<= 1;
+		r |= (n & 1);
+		n >>= 1;
+	}
+	return r;
+}
+
+main()
+{
+	int i;
+	for (i = 0; i <= 0xFF; i++) {
+		if ((i & 7) == 0)
+			printf("/* 0x%02X */", i);
+		printf(" 0x%02X,", bitrev(i));
+		if ((i & 7) == 7)
+			printf("\n");
+	}
+}
+
+#endif
+
+/*
+ * Local Variables:
+ * tab-width: 4
+ * c-indent-level: 4
+ * c-argdecl-indent: 4
+ * c-continued-statement-offset: 4
+ * c-continued-brace-offset: -4
+ * c-label-offset: -4
+ * c-brace-offset: 0
+ * End:
+ */