1 files changed, 263 insertions, 0 deletions
diff --git a/package/etrax-tools/src/e100boot/libpcap-0.4/pcap-bpf.c b/package/etrax-tools/src/e100boot/libpcap-0.4/pcap-bpf.c
new file mode 100644
index 000000000..d8006c39b
--- /dev/null
+++ b/package/etrax-tools/src/e100boot/libpcap-0.4/pcap-bpf.c
@@ -0,0 +1,263 @@
+/*
+ * Copyright (c) 1993, 1994, 1995, 1996, 1998
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that: (1) source code distributions
+ * retain the above copyright notice and this paragraph in its entirety, (2)
+ * distributions including binary code include the above copyright notice and
+ * this paragraph in its entirety in the documentation or other materials
+ * provided with the distribution, and (3) all advertising materials mentioning
+ * features or use of this software display the following acknowledgement:
+ * ``This product includes software developed by the University of California,
+ * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
+ * the University nor the names of its contributors may be used to endorse
+ * or promote products derived from this software without specific prior
+ * written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+#ifndef lint
+static const char rcsid[] =
+    "@(#) $Header: /usr/local/cvs/linux/tools/build/e100boot/libpcap-0.4/pcap-bpf.c,v 1.1 1999/08/26 10:05:23 johana Exp $ (LBL)";
+#endif
+
+#include <sys/param.h>			/* optionally get BSD define */
+#include <sys/time.h>
+#include <sys/timeb.h>
+#include <sys/socket.h>
+#include <sys/file.h>
+#include <sys/ioctl.h>
+
+#include <net/if.h>
+
+#include <ctype.h>
+#include <errno.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "pcap-int.h"
+
+#include "gnuc.h"
+#ifdef HAVE_OS_PROTO_H
+#include "os-proto.h"
+#endif
+
+int
+pcap_stats(pcap_t *p, struct pcap_stat *ps)
+{
+	struct bpf_stat s;
+
+	if (ioctl(p->fd, BIOCGSTATS, (caddr_t)&s) < 0) {
+		sprintf(p->errbuf, "BIOCGSTATS: %s", pcap_strerror(errno));
+		return (-1);
+	}
+
+	ps->ps_recv = s.bs_recv;
+	ps->ps_drop = s.bs_drop;
+	return (0);
+}
+
+int
+pcap_read(pcap_t *p, int cnt, pcap_handler callback, u_char *user)
+{
+	int cc;
+	int n = 0;
+	register u_char *bp, *ep;
+
+ again:
+	cc = p->cc;
+	if (p->cc == 0) {
+		cc = read(p->fd, (char *)p->buffer, p->bufsize);
+		if (cc < 0) {
+			/* Don't choke when we get ptraced */
+			switch (errno) {
+
+			case EINTR:
+				goto again;
+
+			case EWOULDBLOCK:
+				return (0);
+#if defined(sun) && !defined(BSD)
+			/*
+			 * Due to a SunOS bug, after 2^31 bytes, the kernel
+			 * file offset overflows and read fails with EINVAL.
+			 * The lseek() to 0 will fix things.
+			 */
+			case EINVAL:
+				if (lseek(p->fd, 0L, SEEK_CUR) +
+				    p->bufsize < 0) {
+					(void)lseek(p->fd, 0L, SEEK_SET);
+					goto again;
+				}
+				/* fall through */
+#endif
+			}
+			sprintf(p->errbuf, "read: %s", pcap_strerror(errno));
+			return (-1);
+		}
+		bp = p->buffer;
+	} else
+		bp = p->bp;
+
+	/*
+	 * Loop through each packet.
+	 */
+#define bhp ((struct bpf_hdr *)bp)
+	ep = bp + cc;
+	while (bp < ep) {
+		register int caplen, hdrlen;
+		caplen = bhp->bh_caplen;
+		hdrlen = bhp->bh_hdrlen;
+		/*
+		 * XXX A bpf_hdr matches a pcap_pkthdr.
+		 */
+		(*callback)(user, (struct pcap_pkthdr*)bp, bp + hdrlen);
+		bp += BPF_WORDALIGN(caplen + hdrlen);
+		if (++n >= cnt && cnt > 0) {
+			p->bp = bp;
+			p->cc = ep - bp;
+			return (n);
+		}
+	}
+#undef bhp
+	p->cc = 0;
+	return (n);
+}
+
+static inline int
+bpf_open(pcap_t *p, char *errbuf)
+{
+	int fd;
+	int n = 0;
+	char device[sizeof "/dev/bpf000"];
+
+	/*
+	 * Go through all the minors and find one that isn't in use.
+	 */
+	do {
+		(void)sprintf(device, "/dev/bpf%d", n++);
+		fd = open(device, O_RDONLY);
+	} while (fd < 0 && errno == EBUSY);
+
+	/*
+	 * XXX better message for all minors used
+	 */
+	if (fd < 0)
+		sprintf(errbuf, "%s: %s", device, pcap_strerror(errno));
+
+	return (fd);
+}
+
+pcap_t *
+pcap_open_live(char *device, int snaplen, int promisc, int to_ms, char *ebuf)
+{
+	int fd;
+	struct ifreq ifr;
+	struct bpf_version bv;
+	u_int v;
+	pcap_t *p;
+
+	p = (pcap_t *)malloc(sizeof(*p));
+	if (p == NULL) {
+		sprintf(ebuf, "malloc: %s", pcap_strerror(errno));
+		return (NULL);
+	}
+	bzero(p, sizeof(*p));
+	fd = bpf_open(p, ebuf);
+	if (fd < 0)
+		goto bad;
+
+	p->fd = fd;
+	p->snapshot = snaplen;
+
+	if (ioctl(fd, BIOCVERSION, (caddr_t)&bv) < 0) {
+		sprintf(ebuf, "BIOCVERSION: %s", pcap_strerror(errno));
+		goto bad;
+	}
+	if (bv.bv_major != BPF_MAJOR_VERSION ||
+	    bv.bv_minor < BPF_MINOR_VERSION) {
+		sprintf(ebuf, "kernel bpf filter out of date");
+		goto bad;
+	}
+	v = 32768;	/* XXX this should be a user-accessible hook */
+	/* Ignore the return value - this is because the call fails on
+	 * BPF systems that don't have kernel malloc.  And if the call
+	 * fails, it's no big deal, we just continue to use the standard
+	 * buffer size.
+	 */
+	(void) ioctl(fd, BIOCSBLEN, (caddr_t)&v);
+
+	(void)strncpy(ifr.ifr_name, device, sizeof(ifr.ifr_name));
+	if (ioctl(fd, BIOCSETIF, (caddr_t)&ifr) < 0) {
+		sprintf(ebuf, "%s: %s", device, pcap_strerror(errno));
+		goto bad;
+	}
+	/* Get the data link layer type. */
+	if (ioctl(fd, BIOCGDLT, (caddr_t)&v) < 0) {
+		sprintf(ebuf, "BIOCGDLT: %s", pcap_strerror(errno));
+		goto bad;
+	}
+#if _BSDI_VERSION - 0 >= 199510
+	/* The SLIP and PPP link layer header changed in BSD/OS 2.1 */
+	switch (v) {
+
+	case DLT_SLIP:
+		v = DLT_SLIP_BSDOS;
+		break;
+
+	case DLT_PPP:
+		v = DLT_PPP_BSDOS;
+		break;
+	}
+#endif
+	p->linktype = v;
+
+	/* set timeout */
+	if (to_ms != 0) {
+		struct timeval to;
+		to.tv_sec = to_ms / 1000;
+		to.tv_usec = (to_ms * 1000) % 1000000;
+		if (ioctl(p->fd, BIOCSRTIMEOUT, (caddr_t)&to) < 0) {
+			sprintf(ebuf, "BIOCSRTIMEOUT: %s",
+				pcap_strerror(errno));
+			goto bad;
+		}
+	}
+	if (promisc)
+		/* set promiscuous mode, okay if it fails */
+		(void)ioctl(p->fd, BIOCPROMISC, NULL);
+
+	if (ioctl(fd, BIOCGBLEN, (caddr_t)&v) < 0) {
+		sprintf(ebuf, "BIOCGBLEN: %s", pcap_strerror(errno));
+		goto bad;
+	}
+	p->bufsize = v;
+	p->buffer = (u_char *)malloc(p->bufsize);
+	if (p->buffer == NULL) {
+		sprintf(ebuf, "malloc: %s", pcap_strerror(errno));
+		goto bad;
+	}
+
+	return (p);
+ bad:
+	(void)close(fd);
+	free(p);
+	return (NULL);
+}
+
+int
+pcap_setfilter(pcap_t *p, struct bpf_program *fp)
+{
+	if (p->sf.rfile != NULL)
+		p->fcode = *fp;
+	else if (ioctl(p->fd, BIOCSETF, (caddr_t)fp) < 0) {
+		sprintf(p->errbuf, "BIOCSETF: %s", pcap_strerror(errno));
+		return (-1);
+	}
+	return (0);
+}