diff options
author | Seonah Moon <seonah1.moon@samsung.com> | 2020-01-14 13:37:47 +0900 |
---|---|---|
committer | Seonah Moon <seonah1.moon@samsung.com> | 2020-01-14 13:48:06 +0900 |
commit | 449508ea5ea236177e8caf71ca001e80ed0ec601 (patch) | |
tree | 0dcd3471243309053427b0b967d5d3f2a11252cd /print-token.c | |
parent | ddb6800a866ac59478d5806f449597230b21d342 (diff) | |
parent | 9ceaf0d786e9465506271e8450248a57719e4eb1 (diff) | |
download | tcpdump-449508ea5ea236177e8caf71ca001e80ed0ec601.tar.gz tcpdump-449508ea5ea236177e8caf71ca001e80ed0ec601.tar.bz2 tcpdump-449508ea5ea236177e8caf71ca001e80ed0ec601.zip |
Upgrade to 4.9.3submit/tizen_4.0/20200117.075504accepted/tizen/4.0/unified/20200120.103833tizen_4.0accepted/tizen_4.0_unified
Change-Id: I6f9c6d67f2733ce6a7514179a45029f5f3934c6b
Diffstat (limited to 'print-token.c')
-rw-r--r-- | print-token.c | 163 |
1 files changed, 105 insertions, 58 deletions
diff --git a/print-token.c b/print-token.c index 4f8422b..faffd4b 100644 --- a/print-token.c +++ b/print-token.c @@ -23,28 +23,75 @@ * Further tweaked to more closely resemble print-fddi.c * Guy Harris <guy@alum.mit.edu> */ -#ifndef lint -static const char rcsid[] _U_ = - "@(#) $Header: /tcpdump/master/tcpdump/print-token.c,v 1.27 2005-11-13 12:12:43 guy Exp $"; -#endif + +/* \summary: Token Ring printer */ #ifdef HAVE_CONFIG_H #include "config.h" #endif -#include <tcpdump-stdinc.h> +#include <netdissect-stdinc.h> -#include <pcap.h> -#include <stdio.h> #include <string.h> -#include "interface.h" +#include "netdissect.h" #include "extract.h" #include "addrtoname.h" -#include "ethertype.h" - #include "ether.h" -#include "token.h" + +/* + * Copyright (c) 1998, Larry Lile + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice unmodified, this list of conditions, and the following + * disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + */ + +#define TOKEN_HDRLEN 14 +#define TOKEN_RING_MAC_LEN 6 +#define ROUTING_SEGMENT_MAX 16 +#define IS_SOURCE_ROUTED(trp) ((trp)->token_shost[0] & 0x80) +#define FRAME_TYPE(trp) (((trp)->token_fc & 0xC0) >> 6) +#define TOKEN_FC_LLC 1 + +#define BROADCAST(trp) ((EXTRACT_16BITS(&(trp)->token_rcf) & 0xE000) >> 13) +#define RIF_LENGTH(trp) ((EXTRACT_16BITS(&(trp)->token_rcf) & 0x1f00) >> 8) +#define DIRECTION(trp) ((EXTRACT_16BITS(&(trp)->token_rcf) & 0x0080) >> 7) +#define LARGEST_FRAME(trp) ((EXTRACT_16BITS(&(trp)->token_rcf) & 0x0070) >> 4) +#define RING_NUMBER(trp, x) ((EXTRACT_16BITS(&(trp)->token_rseg[x]) & 0xfff0) >> 4) +#define BRIDGE_NUMBER(trp, x) ((EXTRACT_16BITS(&(trp)->token_rseg[x]) & 0x000f)) +#define SEGMENT_COUNT(trp) ((int)((RIF_LENGTH(trp) - 2) / 2)) + +struct token_header { + uint8_t token_ac; + uint8_t token_fc; + uint8_t token_dhost[TOKEN_RING_MAC_LEN]; + uint8_t token_shost[TOKEN_RING_MAC_LEN]; + uint16_t token_rcf; + uint16_t token_rseg[ROUTING_SEGMENT_MAX]; +}; + +static const char tstr[] = "[|token-ring]"; /* Extract src, dst addresses */ static inline void @@ -58,22 +105,22 @@ extract_token_addrs(const struct token_header *trp, char *fsrc, char *fdst) * Print the TR MAC header */ static inline void -token_hdr_print(register const struct token_header *trp, register u_int length, - register const u_char *fsrc, register const u_char *fdst) +token_hdr_print(netdissect_options *ndo, + register const struct token_header *trp, register u_int length, + register const u_char *fsrc, register const u_char *fdst) { const char *srcname, *dstname; - srcname = etheraddr_string(fsrc); - dstname = etheraddr_string(fdst); + srcname = etheraddr_string(ndo, fsrc); + dstname = etheraddr_string(ndo, fdst); - if (vflag) - (void) printf("%02x %02x %s %s %d: ", + if (!ndo->ndo_qflag) + ND_PRINT((ndo, "%02x %02x ", trp->token_ac, - trp->token_fc, - srcname, dstname, - length); - else - printf("%s %s %d: ", srcname, dstname, length); + trp->token_fc)); + ND_PRINT((ndo, "%s > %s, length %u: ", + srcname, dstname, + length)); } static const char *broadcast_indicator[] = { @@ -99,18 +146,19 @@ static const char *largest_frame[] = { }; u_int -token_print(const u_char *p, u_int length, u_int caplen) +token_print(netdissect_options *ndo, const u_char *p, u_int length, u_int caplen) { const struct token_header *trp; - u_short extracted_ethertype; + int llc_hdrlen; struct ether_header ehdr; + struct lladdr_info src, dst; u_int route_len = 0, hdr_len = TOKEN_HDRLEN; int seg; trp = (const struct token_header *)p; if (caplen < TOKEN_HDRLEN) { - printf("[|token-ring]"); + ND_PRINT((ndo, "%s", tstr)); return hdr_len; } @@ -124,38 +172,43 @@ token_print(const u_char *p, u_int length, u_int caplen) /* Clear source-routed bit */ *ESRC(&ehdr) &= 0x7f; - if (eflag) - token_hdr_print(trp, length, ESRC(&ehdr), EDST(&ehdr)); + if (ndo->ndo_eflag) + token_hdr_print(ndo, trp, length, ESRC(&ehdr), EDST(&ehdr)); if (caplen < TOKEN_HDRLEN + 2) { - printf("[|token-ring]"); + ND_PRINT((ndo, "%s", tstr)); return hdr_len; } route_len = RIF_LENGTH(trp); hdr_len += route_len; if (caplen < hdr_len) { - printf("[|token-ring]"); + ND_PRINT((ndo, "%s", tstr)); return hdr_len; } - if (vflag) { - printf("%s ", broadcast_indicator[BROADCAST(trp)]); - printf("%s", direction[DIRECTION(trp)]); + if (ndo->ndo_vflag) { + ND_PRINT((ndo, "%s ", broadcast_indicator[BROADCAST(trp)])); + ND_PRINT((ndo, "%s", direction[DIRECTION(trp)])); for (seg = 0; seg < SEGMENT_COUNT(trp); seg++) - printf(" [%d:%d]", RING_NUMBER(trp, seg), - BRIDGE_NUMBER(trp, seg)); + ND_PRINT((ndo, " [%d:%d]", RING_NUMBER(trp, seg), + BRIDGE_NUMBER(trp, seg))); } else { - printf("rt = %x", EXTRACT_16BITS(&trp->token_rcf)); + ND_PRINT((ndo, "rt = %x", EXTRACT_16BITS(&trp->token_rcf))); for (seg = 0; seg < SEGMENT_COUNT(trp); seg++) - printf(":%x", EXTRACT_16BITS(&trp->token_rseg[seg])); + ND_PRINT((ndo, ":%x", EXTRACT_16BITS(&trp->token_rseg[seg]))); } - printf(" (%s) ", largest_frame[LARGEST_FRAME(trp)]); + ND_PRINT((ndo, " (%s) ", largest_frame[LARGEST_FRAME(trp)])); } else { - if (eflag) - token_hdr_print(trp, length, ESRC(&ehdr), EDST(&ehdr)); + if (ndo->ndo_eflag) + token_hdr_print(ndo, trp, length, ESRC(&ehdr), EDST(&ehdr)); } + src.addr = ESRC(&ehdr); + src.addr_string = etheraddr_string; + dst.addr = EDST(&ehdr); + dst.addr_string = etheraddr_string; + /* Skip over token ring MAC header and routing information */ length -= hdr_len; p += hdr_len; @@ -164,28 +217,22 @@ token_print(const u_char *p, u_int length, u_int caplen) /* Frame Control field determines interpretation of packet */ if (FRAME_TYPE(trp) == TOKEN_FC_LLC) { /* Try to print the LLC-layer header & higher layers */ - if (llc_print(p, length, caplen, ESRC(&ehdr), EDST(&ehdr), - &extracted_ethertype) == 0) { - /* ether_type not known, print raw packet */ - if (!eflag) - token_hdr_print(trp, - length + TOKEN_HDRLEN + route_len, - ESRC(&ehdr), EDST(&ehdr)); - if (extracted_ethertype) { - printf("(LLC %s) ", - etherproto_string(htons(extracted_ethertype))); - } - if (!suppress_default_print) - default_print(p, caplen); + llc_hdrlen = llc_print(ndo, p, length, caplen, &src, &dst); + if (llc_hdrlen < 0) { + /* packet type not known, print raw packet */ + if (!ndo->ndo_suppress_default_print) + ND_DEFAULTPRINT(p, caplen); + llc_hdrlen = -llc_hdrlen; } + hdr_len += llc_hdrlen; } else { /* Some kinds of TR packet we cannot handle intelligently */ /* XXX - dissect MAC packets if frame type is 0 */ - if (!eflag) - token_hdr_print(trp, length + TOKEN_HDRLEN + route_len, + if (!ndo->ndo_eflag) + token_hdr_print(ndo, trp, length + TOKEN_HDRLEN + route_len, ESRC(&ehdr), EDST(&ehdr)); - if (!suppress_default_print) - default_print(p, caplen); + if (!ndo->ndo_suppress_default_print) + ND_DEFAULTPRINT(p, caplen); } return (hdr_len); } @@ -197,7 +244,7 @@ token_print(const u_char *p, u_int length, u_int caplen) * is the number of bytes actually captured. */ u_int -token_if_print(const struct pcap_pkthdr *h, const u_char *p) +token_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p) { - return (token_print(p, h->len, h->caplen)); + return (token_print(ndo, p, h->len, h->caplen)); } |