1 files changed, 300 insertions, 0 deletions
diff --git a/package/etrax-tools/src/e100boot/libpcap-0.4/pcap-snit.c b/package/etrax-tools/src/e100boot/libpcap-0.4/pcap-snit.c
new file mode 100644
index 000000000..56f75fa62
--- /dev/null
+++ b/package/etrax-tools/src/e100boot/libpcap-0.4/pcap-snit.c
@@ -0,0 +1,300 @@
+/*
+ * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996
+ *	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.
+ *
+ * Modifications made to accommodate the new SunOS4.0 NIT facility by
+ * Micky Liu, micky@cunixc.cc.columbia.edu, Columbia University in May, 1989.
+ * This module now handles the STREAMS based NIT.
+ */
+
+#ifndef lint
+static const char rcsid[] =
+    "@(#) $Header: /usr/local/cvs/linux/tools/build/e100boot/libpcap-0.4/pcap-snit.c,v 1.1 1999/08/26 10:05:25 johana Exp $ (LBL)";
+#endif
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/timeb.h>
+#include <sys/dir.h>
+#include <sys/fcntlcom.h>
+#include <sys/file.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <sys/stropts.h>
+
+#include <net/if.h>
+#include <net/nit.h>
+#include <net/nit_if.h>
+#include <net/nit_pf.h>
+#include <net/nit_buf.h>
+
+#include <netinet/in.h>
+#include <netinet/in_systm.h>
+#include <netinet/ip.h>
+#include <netinet/if_ether.h>
+#include <netinet/ip_var.h>
+#include <netinet/udp.h>
+#include <netinet/udp_var.h>
+#include <netinet/tcp.h>
+#include <netinet/tcpip.h>
+
+#include <ctype.h>
+#include <errno.h>
+#ifdef HAVE_MALLOC_H
+#include <malloc.h>
+#endif
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "pcap-int.h"
+
+#include "gnuc.h"
+#ifdef HAVE_OS_PROTO_H
+#include "os-proto.h"
+#endif
+
+/*
+ * The chunk size for NIT.  This is the amount of buffering
+ * done for read calls.
+ */
+#define CHUNKSIZE (2*1024)
+
+/*
+ * The total buffer space used by NIT.
+ */
+#define BUFSPACE (4*CHUNKSIZE)
+
+/* Forwards */
+static int nit_setflags(int, int, int, char *);
+
+int
+pcap_stats(pcap_t *p, struct pcap_stat *ps)
+{
+
+	*ps = p->md.stat;
+	return (0);
+}
+
+int
+pcap_read(pcap_t *p, int cnt, pcap_handler callback, u_char *user)
+{
+	register int cc, n;
+	register struct bpf_insn *fcode = p->fcode.bf_insns;
+	register u_char *bp, *cp, *ep;
+	register struct nit_bufhdr *hdrp;
+	register struct nit_iftime *ntp;
+	register struct nit_iflen *nlp;
+	register struct nit_ifdrops *ndp;
+	register int caplen;
+
+	cc = p->cc;
+	if (cc == 0) {
+		cc = read(p->fd, (char *)p->buffer, p->bufsize);
+		if (cc < 0) {
+			if (errno == EWOULDBLOCK)
+				return (0);
+			sprintf(p->errbuf, "pcap_read: %s",
+				pcap_strerror(errno));
+			return (-1);
+		}
+		bp = p->buffer;
+	} else
+		bp = p->bp;
+
+	/*
+	 * loop through each snapshot in the chunk
+	 */
+	n = 0;
+	ep = bp + cc;
+	while (bp < ep) {
+		++p->md.stat.ps_recv;
+		cp = bp;
+
+		/* get past NIT buffer  */
+		hdrp = (struct nit_bufhdr *)cp;
+		cp += sizeof(*hdrp);
+
+		/* get past NIT timer   */
+		ntp = (struct nit_iftime *)cp;
+		cp += sizeof(*ntp);
+
+		ndp = (struct nit_ifdrops *)cp;
+		p->md.stat.ps_drop = ndp->nh_drops;
+		cp += sizeof *ndp;
+
+		/* get past packet len  */
+		nlp = (struct nit_iflen *)cp;
+		cp += sizeof(*nlp);
+
+		/* next snapshot        */
+		bp += hdrp->nhb_totlen;
+
+		caplen = nlp->nh_pktlen;
+		if (caplen > p->snapshot)
+			caplen = p->snapshot;
+
+		if (bpf_filter(fcode, cp, nlp->nh_pktlen, caplen)) {
+			struct pcap_pkthdr h;
+			h.ts = ntp->nh_timestamp;
+			h.len = nlp->nh_pktlen;
+			h.caplen = caplen;
+			(*callback)(user, &h, cp);
+			if (++n >= cnt && cnt >= 0) {
+				p->cc = ep - bp;
+				p->bp = bp;
+				return (n);
+			}
+		}
+	}
+	p->cc = 0;
+	return (n);
+}
+
+static int
+nit_setflags(int fd, int promisc, int to_ms, char *ebuf)
+{
+	bpf_u_int32 flags;
+	struct strioctl si;
+	struct timeval timeout;
+
+	si.ic_timout = INFTIM;
+	if (to_ms != 0) {
+		timeout.tv_sec = to_ms / 1000;
+		timeout.tv_usec = (to_ms * 1000) % 1000000;
+		si.ic_cmd = NIOCSTIME;
+		si.ic_len = sizeof(timeout);
+		si.ic_dp = (char *)&timeout;
+		if (ioctl(fd, I_STR, (char *)&si) < 0) {
+			sprintf(ebuf, "NIOCSTIME: %s", pcap_strerror(errno));
+			return (-1);
+		}
+	}
+	flags = NI_TIMESTAMP | NI_LEN | NI_DROPS;
+	if (promisc)
+		flags |= NI_PROMISC;
+	si.ic_cmd = NIOCSFLAGS;
+	si.ic_len = sizeof(flags);
+	si.ic_dp = (char *)&flags;
+	if (ioctl(fd, I_STR, (char *)&si) < 0) {
+		sprintf(ebuf, "NIOCSFLAGS: %s", pcap_strerror(errno));
+		return (-1);
+	}
+	return (0);
+}
+
+pcap_t *
+pcap_open_live(char *device, int snaplen, int promisc, int to_ms, char *ebuf)
+{
+	struct strioctl si;		/* struct for ioctl() */
+	struct ifreq ifr;		/* interface request struct */
+	int chunksize = CHUNKSIZE;
+	int fd;
+	static char dev[] = "/dev/nit";
+	register pcap_t *p;
+
+	p = (pcap_t *)malloc(sizeof(*p));
+	if (p == NULL) {
+		strcpy(ebuf, pcap_strerror(errno));
+		return (NULL);
+	}
+
+	if (snaplen < 96)
+		/*
+		 * NIT requires a snapshot length of at least 96.
+		 */
+		snaplen = 96;
+
+	bzero(p, sizeof(*p));
+	p->fd = fd = open(dev, O_RDONLY);
+	if (fd < 0) {
+		sprintf(ebuf, "%s: %s", dev, pcap_strerror(errno));
+		goto bad;
+	}
+
+	/* arrange to get discrete messages from the STREAM and use NIT_BUF */
+	if (ioctl(fd, I_SRDOPT, (char *)RMSGD) < 0) {
+		sprintf(ebuf, "I_SRDOPT: %s", pcap_strerror(errno));
+		goto bad;
+	}
+	if (ioctl(fd, I_PUSH, "nbuf") < 0) {
+		sprintf(ebuf, "push nbuf: %s", pcap_strerror(errno));
+		goto bad;
+	}
+	/* set the chunksize */
+	si.ic_cmd = NIOCSCHUNK;
+	si.ic_timout = INFTIM;
+	si.ic_len = sizeof(chunksize);
+	si.ic_dp = (char *)&chunksize;
+	if (ioctl(fd, I_STR, (char *)&si) < 0) {
+		sprintf(ebuf, "NIOCSCHUNK: %s", pcap_strerror(errno));
+		goto bad;
+	}
+
+	/* request the interface */
+	strncpy(ifr.ifr_name, device, sizeof(ifr.ifr_name));
+	ifr.ifr_name[sizeof(ifr.ifr_name) - 1] = ' ';
+	si.ic_cmd = NIOCBIND;
+	si.ic_len = sizeof(ifr);
+	si.ic_dp = (char *)&ifr;
+	if (ioctl(fd, I_STR, (char *)&si) < 0) {
+		sprintf(ebuf, "NIOCBIND: %s: %s",
+			ifr.ifr_name, pcap_strerror(errno));
+		goto bad;
+	}
+
+	/* set the snapshot length */
+	si.ic_cmd = NIOCSSNAP;
+	si.ic_len = sizeof(snaplen);
+	si.ic_dp = (char *)&snaplen;
+	if (ioctl(fd, I_STR, (char *)&si) < 0) {
+		sprintf(ebuf, "NIOCSSNAP: %s", pcap_strerror(errno));
+		goto bad;
+	}
+	p->snapshot = snaplen;
+	if (nit_setflags(p->fd, promisc, to_ms, ebuf) < 0)
+		goto bad;
+
+	(void)ioctl(fd, I_FLUSH, (char *)FLUSHR);
+	/*
+	 * NIT supports only ethernets.
+	 */
+	p->linktype = DLT_EN10MB;
+
+	p->bufsize = BUFSPACE;
+	p->buffer = (u_char *)malloc(p->bufsize);
+	if (p->buffer == NULL) {
+		strcpy(ebuf, pcap_strerror(errno));
+		goto bad;
+	}
+	return (p);
+ bad:
+	if (fd >= 0)
+		close(fd);
+	free(p);
+	return (NULL);
+}
+
+int
+pcap_setfilter(pcap_t *p, struct bpf_program *fp)
+{
+
+	p->fcode = *fp;
+	return (0);
+}