X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/c78c9612210bbe0d104e66258246ed47551d9969..5cc4c57d4320f80c059506eccd5ad7fa3d97c66f:/print-token.c

diff --git a/print-token.c b/print-token.c
index 0d0b23a6..1ef215d2 100644
--- a/print-token.c
+++ b/print-token.c
@@ -24,19 +24,15 @@
  *	Guy Harris <guy@alum.mit.edu>
  */
 #ifndef lint
-static const char rcsid[] =
-    "@(#) $Header: /tcpdump/master/tcpdump/print-token.c,v 1.13 2001-09-18 15:46:37 fenner Exp $";
+static const char rcsid[] _U_ =
+    "@(#) $Header: /tcpdump/master/tcpdump/print-token.c,v 1.25 2004-03-17 23:24:38 guy Exp $";
 #endif
 
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
 
-#include <sys/param.h>
-#include <sys/time.h>
-#include <sys/socket.h>
-
-#include <netinet/in.h>
+#include <tcpdump-stdinc.h>
 
 #include <pcap.h>
 #include <stdio.h>
@@ -61,7 +57,7 @@ extract_token_addrs(const struct token_header *trp, char *fsrc, char *fdst)
  * Print the TR MAC header
  */
 static inline void
-token_print(register const struct token_header *trp, register u_int length,
+token_hdr_print(register const struct token_header *trp, register u_int length,
 	   register const u_char *fsrc, register const u_char *fdst)
 {
 	const char *srcname, *dstname;
@@ -101,48 +97,26 @@ static const char *largest_frame[] = {
 	"??"
 };
 
-/*
- * This is the top level routine of the printer.  'p' is the points
- * to the TR header of the packet, 'tvp' is the timestamp,
- * 'length' is the length of the packet off the wire, and 'caplen'
- * is the number of bytes actually captured.
- */
-void
-token_if_print(u_char *user, const struct pcap_pkthdr *h, const u_char *p)
+u_int
+token_print(const u_char *p, u_int length, u_int caplen)
 {
-	u_int caplen = h->caplen;
-	u_int length = h->len;
 	const struct token_header *trp;
 	u_short extracted_ethertype;
 	struct ether_header ehdr;
-	u_int route_len = 0, seg;
+	u_int route_len = 0, hdr_len = TOKEN_HDRLEN;
+	int seg;
 
 	trp = (const struct token_header *)p;
 
-	++infodelay;
-	ts_print(&h->ts);
-
 	if (caplen < TOKEN_HDRLEN) {
 		printf("[|token-ring]");
-		goto out;
+		return hdr_len;
 	}
+
 	/*
 	 * Get the TR addresses into a canonical form
 	 */
 	extract_token_addrs(trp, (char*)ESRC(&ehdr), (char*)EDST(&ehdr));
-	/*
-	 * Some printers want to get back at the ethernet addresses,
-	 * and/or check that they're not walking off the end of the packet.
-	 * Rather than pass them all the way down, we set these globals.
-	 */
-	snapend = p + caplen;
-	/*
-	 * Actually, the only printers that use packetp are print-arp.c
-	 * and print-bootp.c, and they assume that packetp points to an
-	 * Ethernet header.  The right thing to do is to fix them to know
-	 * which link type is in use when they excavate. XXX
-	 */
-	packetp = (u_char *)&ehdr;
 
 	/* Adjust for source routing information in the MAC header */
 	if (IS_SOURCE_ROUTED(trp)) {
@@ -150,32 +124,33 @@ token_if_print(u_char *user, const struct pcap_pkthdr *h, const u_char *p)
 		*ESRC(&ehdr) &= 0x7f;
 
 		if (eflag)
-			token_print(trp, length, ESRC(&ehdr), EDST(&ehdr));
+			token_hdr_print(trp, length, ESRC(&ehdr), EDST(&ehdr));
 
 		route_len = RIF_LENGTH(trp);
 		if (vflag) {
 			printf("%s ", broadcast_indicator[BROADCAST(trp)]);
 			printf("%s", direction[DIRECTION(trp)]);
-     
+
 			for (seg = 0; seg < SEGMENT_COUNT(trp); seg++)
 				printf(" [%d:%d]", RING_NUMBER(trp, seg),
 				    BRIDGE_NUMBER(trp, seg));
 		} else {
 			printf("rt = %x", ntohs(trp->token_rcf));
- 
+
 			for (seg = 0; seg < SEGMENT_COUNT(trp); seg++)
 				printf(":%x", ntohs(trp->token_rseg[seg]));
 		}
 		printf(" (%s) ", largest_frame[LARGEST_FRAME(trp)]);
 	} else {
 		if (eflag)
-			token_print(trp, length, ESRC(&ehdr), EDST(&ehdr));
+			token_hdr_print(trp, length, ESRC(&ehdr), EDST(&ehdr));
 	}
 
 	/* Skip over token ring MAC header and routing information */
-	length -= TOKEN_HDRLEN + route_len;
-	p += TOKEN_HDRLEN + route_len;
-	caplen -= TOKEN_HDRLEN + route_len;
+	hdr_len += route_len;
+	length -= hdr_len;
+	p += hdr_len;
+	caplen -= hdr_len;
 
 	/* Frame Control field determines interpretation of packet */
 	extracted_ethertype = 0;
@@ -185,7 +160,7 @@ token_if_print(u_char *user, const struct pcap_pkthdr *h, const u_char *p)
 		    &extracted_ethertype) == 0) {
 			/* ether_type not known, print raw packet */
 			if (!eflag)
-				token_print(trp,
+				token_hdr_print(trp,
 				    length + TOKEN_HDRLEN + route_len,
 				    ESRC(&ehdr), EDST(&ehdr));
 			if (extracted_ethertype) {
@@ -199,16 +174,22 @@ token_if_print(u_char *user, const struct pcap_pkthdr *h, const u_char *p)
 		/* Some kinds of TR packet we cannot handle intelligently */
 		/* XXX - dissect MAC packets if frame type is 0 */
 		if (!eflag)
-			token_print(trp, length + TOKEN_HDRLEN + route_len,
+			token_hdr_print(trp, length + TOKEN_HDRLEN + route_len,
 			    ESRC(&ehdr), EDST(&ehdr));
 		if (!xflag && !qflag)
 			default_print(p, caplen);
 	}
-	if (xflag)
-		default_print(p, caplen);
-out:
-	putchar('\n');
-	--infodelay;
-	if (infoprint)
-		info(0);
+	return (hdr_len);
+}
+
+/*
+ * This is the top level routine of the printer.  'p' points
+ * to the TR header of the packet, 'h->ts' is the timestamp,
+ * 'h->len' is the length of the packet off the wire, and 'h->caplen'
+ * is the number of bytes actually captured.
+ */
+u_int
+token_if_print(const struct pcap_pkthdr *h, const u_char *p)
+{
+	return (token_print(p, h->len, h->caplen));
 }