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bgp: Parse BGP extended message support capability
[tcpdump] / print-atalk.c
diff --git a/print-atalk.c b/print-atalk.c
index b5d162c720a18818be39550cf323a7a289f8eda8..4e1fa3d2163edd9c7536d0a6a2d3e277196edb76 100644 (file)
--- a/print-atalk.c
+++ b/print-atalk.c
@@ -17,37 +17,101 @@
  * 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.
  * 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.
- *
- * Format and print AppleTalk packets.
  */
 
  */
 
-#ifndef lint
-static const char rcsid[] =
-    "@(#) $Header: /tcpdump/master/tcpdump/print-atalk.c,v 1.61 2000-10-06 04:23:10 guy Exp $ (LBL)";
-#endif
+/* \summary: AppleTalk printer */
 
 #ifdef HAVE_CONFIG_H
 
 #ifdef HAVE_CONFIG_H
-#include "config.h"
+#include <config.h>
 #endif
 
 #endif
 
-#include <sys/param.h>
-#include <sys/time.h>
-#include <sys/socket.h>
-
-#include <netinet/in.h>
+#include "netdissect-stdinc.h"
 
 #include <stdio.h>
 
 #include <stdio.h>
-#include <stdlib.h>
 #include <string.h>
 
 #include <string.h>
 
-#include "interface.h"
+#define ND_LONGJMP_FROM_TCHECK
+#include "netdissect.h"
 #include "addrtoname.h"
 #include "ethertype.h"
 #include "addrtoname.h"
 #include "ethertype.h"
-#include "extract.h"                   /* must come after interface.h */
+#include "extract.h"
 #include "appletalk.h"
 #include "appletalk.h"
-#include "savestr.h"
 
 
-static struct tok type2str[] = {
+/* Datagram Delivery Protocol */
+
+struct atDDP {
+       nd_uint16_t     length;
+       nd_uint16_t     checksum;
+       nd_uint16_t     dstNet;
+       nd_uint16_t     srcNet;
+       nd_uint8_t      dstNode;
+       nd_uint8_t      srcNode;
+       nd_uint8_t      dstSkt;
+       nd_uint8_t      srcSkt;
+       nd_uint8_t      type;
+};
+#define        ddpSize         13
+
+struct atShortDDP {
+       nd_uint16_t     length;
+       nd_uint8_t      dstSkt;
+       nd_uint8_t      srcSkt;
+       nd_uint8_t      type;
+};
+#define        ddpSSize        5
+
+/* AppleTalk Transaction Protocol */
+
+struct atATP {
+       nd_uint8_t      control;
+       nd_uint8_t      bitmap;
+       nd_uint16_t     transID;
+       nd_uint32_t     userData;
+};
+
+#define        atpReqCode      0x40
+#define        atpRspCode      0x80
+#define        atpRelCode      0xC0
+#define        atpXO           0x20
+#define        atpEOM          0x10
+#define        atpSTS          0x08
+
+/* Name Binding Protocol */
+
+struct atNBP {
+       nd_uint8_t      control;
+       nd_uint8_t      id;
+};
+#define        nbpHeaderSize   2
+
+struct atNBPtuple {
+       nd_uint16_t     net;
+       nd_uint8_t      node;
+       nd_uint8_t      skt;
+       nd_uint8_t      enumerator;
+};
+#define        nbpTupleSize    5
+
+#define        nbpBrRq         0x10
+#define        nbpLkUp         0x20
+#define        nbpLkUpReply    0x30
+static const struct tok nbp_str[] = {
+       { nbpBrRq,      "brRq"  },
+       { nbpLkUp,      "lkup"  },
+       { nbpLkUpReply, "reply" },
+       { 0, NULL }
+};
+
+#define        ddpRTMP         1       /* RTMP type */
+#define        ddpNBP          2       /* NBP type */
+#define        ddpATP          3       /* ATP type */
+#define        ddpECHO         4       /* ECHO type */
+#define        ddpRTMPrequest  5       /* RTMP request type */
+#define        ddpIP           22      /* IP type */
+#define        ddpARP          23      /* ARP type */
+#define        ddpKLAP         0x4b    /* Kinetics KLAP type */
+#define        ddpEIGRP        88      /* EIGRP over Appletalk */
+static const struct tok type2str[] = {
        { ddpRTMP,              "rtmp" },
        { ddpRTMPrequest,       "rtmpReq" },
        { ddpECHO,              "echo" },
        { ddpRTMP,              "rtmp" },
        { ddpRTMPrequest,       "rtmpReq" },
        { ddpECHO,              "echo" },
@@ -58,243 +122,306 @@ static struct tok type2str[] = {
 };
 
 struct aarp {
 };
 
 struct aarp {
-       u_int16_t       htype, ptype;
-       u_int8_t        halen, palen;
-       u_int16_t       op;
-       u_int8_t        hsaddr[6];
-       u_int8_t        psaddr[4];
-       u_int8_t        hdaddr[6];
-       u_int8_t        pdaddr[4];
+       nd_uint16_t     htype, ptype;
+       nd_uint8_t      halen, palen;
+       nd_uint16_t     op;
+       nd_mac_addr     hsaddr;
+       uint8_t         psaddr[4];
+       nd_mac_addr     hdaddr;
+       uint8_t         pdaddr[4];
 };
 
 };
 
-static char tstr[] = "[|atalk]";
-
-static void atp_print(const struct atATP *, u_int);
-static void atp_bitmap_print(u_char);
-static void nbp_print(const struct atNBP *, u_int, u_short, u_char, u_char);
-static const char *print_cstring(const char *, const u_char *);
-static const struct atNBPtuple *nbp_tuple_print(const struct atNBPtuple *,
-                                               const u_char *,
+static void atp_print(netdissect_options *, const struct atATP *, u_int);
+static void atp_bitmap_print(netdissect_options *, u_char);
+static void nbp_print(netdissect_options *, const struct atNBP *, u_int, u_short, u_char, u_char);
+static const struct atNBPtuple *nbp_tuple_print(netdissect_options *ndo, const struct atNBPtuple *,
                                                u_short, u_char, u_char);
                                                u_short, u_char, u_char);
-static const struct atNBPtuple *nbp_name_print(const struct atNBPtuple *,
-                                              const u_char *);
-static const char *ataddr_string(u_short, u_char);
-static void ddp_print(const u_char *, u_int, int, u_short, u_char, u_char);
-static const char *ddpskt_string(int);
+static const struct atNBPtuple *nbp_name_print(netdissect_options *, const struct atNBPtuple *);
+static const char *ataddr_string(netdissect_options *, u_short, u_char);
+static void ddp_print(netdissect_options *, const u_char *, u_int, u_int, u_short, u_char, u_char);
+static const char *ddpskt_string(netdissect_options *, u_int);
 
 /*
 
 /*
- * Print AppleTalk Datagram Delivery Protocol packets.
+ * Print LLAP packets received on a physical LocalTalk interface.
  */
 void
  */
 void
-atalk_print(register const u_char *bp, u_int length)
+ltalk_if_print(netdissect_options *ndo,
+               const struct pcap_pkthdr *h, const u_char *p)
 {
 {
-       register const struct LAP *lp;
-       register const struct atDDP *dp;
-       register const struct atShortDDP *sdp;
+       ndo->ndo_protocol = "ltalk";
+       ndo->ndo_ll_hdr_len += llap_print(ndo, p, h->len);
+}
+
+/*
+ * Print AppleTalk LLAP packets.
+ */
+u_int
+llap_print(netdissect_options *ndo,
+           const u_char *bp, u_int length)
+{
+       const struct LAP *lp;
+       const struct atDDP *dp;
+       const struct atShortDDP *sdp;
        u_short snet;
        u_short snet;
+       u_int hdrlen;
 
 
-       lp = (struct LAP *)bp;
+       ndo->ndo_protocol = "llap";
+       ND_LCHECKMSG_ZU(length, sizeof(*lp), "LLAP length");
+       lp = (const struct LAP *)bp;
        bp += sizeof(*lp);
        length -= sizeof(*lp);
        bp += sizeof(*lp);
        length -= sizeof(*lp);
-       switch (lp->type) {
+       hdrlen = sizeof(*lp);
+       switch (GET_U_1(lp->type)) {
 
        case lapShortDDP:
 
        case lapShortDDP:
-               if (length < ddpSSize) {
-                       (void)printf(" [|sddp %d]", length);
-                       return;
-               }
+               ndo->ndo_protocol = "sddp";
+               ND_LCHECKMSG_U(length, ddpSSize, "SDDP length");
                sdp = (const struct atShortDDP *)bp;
                sdp = (const struct atShortDDP *)bp;
-               printf("%s.%s",
-                   ataddr_string(0, lp->src), ddpskt_string(sdp->srcSkt));
-               printf(" > %s.%s:",
-                   ataddr_string(0, lp->dst), ddpskt_string(sdp->dstSkt));
+               ND_PRINT("%s.%s",
+                   ataddr_string(ndo, 0, GET_U_1(lp->src)),
+                   ddpskt_string(ndo, GET_U_1(sdp->srcSkt)));
+               ND_PRINT(" > %s.%s:",
+                   ataddr_string(ndo, 0, GET_U_1(lp->dst)),
+                   ddpskt_string(ndo, GET_U_1(sdp->dstSkt)));
                bp += ddpSSize;
                length -= ddpSSize;
                bp += ddpSSize;
                length -= ddpSSize;
-               ddp_print(bp, length, sdp->type, 0, lp->src, sdp->srcSkt);
+               hdrlen += ddpSSize;
+               ddp_print(ndo, bp, length, GET_U_1(sdp->type), 0,
+                         GET_U_1(lp->src), GET_U_1(sdp->srcSkt));
                break;
 
        case lapDDP:
                break;
 
        case lapDDP:
-               if (length < ddpSize) {
-                       (void)printf(" [|ddp %d]", length);
-                       return;
-               }
+               ndo->ndo_protocol = "ddp";
+               ND_LCHECKMSG_U(length, ddpSize, "DDP length");
                dp = (const struct atDDP *)bp;
                dp = (const struct atDDP *)bp;
-               snet = EXTRACT_16BITS(&dp->srcNet);
-               printf("%s.%s", ataddr_string(snet, dp->srcNode),
-                   ddpskt_string(dp->srcSkt));
-               printf(" > %s.%s:",
-                   ataddr_string(EXTRACT_16BITS(&dp->dstNet), dp->dstNode),
-                   ddpskt_string(dp->dstSkt));
+               snet = GET_BE_U_2(dp->srcNet);
+               ND_PRINT("%s.%s",
+                        ataddr_string(ndo, snet, GET_U_1(dp->srcNode)),
+                        ddpskt_string(ndo, GET_U_1(dp->srcSkt)));
+               ND_PRINT(" > %s.%s:",
+                   ataddr_string(ndo, GET_BE_U_2(dp->dstNet), GET_U_1(dp->dstNode)),
+                   ddpskt_string(ndo, GET_U_1(dp->dstSkt)));
                bp += ddpSize;
                length -= ddpSize;
                bp += ddpSize;
                length -= ddpSize;
-               ddp_print(bp, length, dp->type, snet, dp->srcNode, dp->srcSkt);
-               break;
-
-#ifdef notdef
-       case lapKLAP:
-               klap_print(bp, length);
+               hdrlen += ddpSize;
+               ddp_print(ndo, bp, length, GET_U_1(dp->type), snet,
+                         GET_U_1(dp->srcNode), GET_U_1(dp->srcSkt));
                break;
                break;
-#endif
 
        default:
 
        default:
-               printf("%d > %d at-lap#%d %d",
-                   lp->src, lp->dst, lp->type, length);
+               ND_PRINT("%u > %u at-lap#%u %u",
+                   GET_U_1(lp->src), GET_U_1(lp->dst), GET_U_1(lp->type),
+                   length);
                break;
        }
                break;
        }
+       return (hdrlen);
+invalid:
+       nd_print_invalid(ndo);
+       return length;
+}
+
+/*
+ * Print EtherTalk/TokenTalk packets (or FDDITalk, or whatever it's called
+ * when it runs over FDDI; yes, I've seen FDDI captures with AppleTalk
+ * packets in them).
+ */
+void
+atalk_print(netdissect_options *ndo,
+            const u_char *bp, u_int length)
+{
+       const struct atDDP *dp;
+       u_short snet;
+
+       ndo->ndo_protocol = "atalk";
+        if(!ndo->ndo_eflag)
+            ND_PRINT("AT ");
+
+       ND_LCHECK_U(length, ddpSize);
+       dp = (const struct atDDP *)bp;
+       snet = GET_BE_U_2(dp->srcNet);
+       ND_PRINT("%s.%s", ataddr_string(ndo, snet, GET_U_1(dp->srcNode)),
+                ddpskt_string(ndo, GET_U_1(dp->srcSkt)));
+       ND_PRINT(" > %s.%s: ",
+              ataddr_string(ndo, GET_BE_U_2(dp->dstNet), GET_U_1(dp->dstNode)),
+              ddpskt_string(ndo, GET_U_1(dp->dstSkt)));
+       bp += ddpSize;
+       length -= ddpSize;
+       ddp_print(ndo, bp, length, GET_U_1(dp->type), snet,
+                 GET_U_1(dp->srcNode), GET_U_1(dp->srcSkt));
+       return;
+invalid:
+       nd_print_invalid(ndo);
 }
 
 /* XXX should probably pass in the snap header and do checks like arp_print() */
 void
 }
 
 /* XXX should probably pass in the snap header and do checks like arp_print() */
 void
-aarp_print(register const u_char *bp, u_int length)
+aarp_print(netdissect_options *ndo,
+           const u_char *bp, u_int length)
 {
 {
-       register const struct aarp *ap;
+       const struct aarp *ap;
 
 
-#define AT(member) ataddr_string((ap->member[1]<<8)|ap->member[2],ap->member[3])
+#define AT(member) ataddr_string(ndo, \
+       (GET_U_1(&ap->member[1])<<8)|GET_U_1(&ap->member[2]), \
+       GET_U_1(&ap->member[3]))
 
 
-       printf("aarp ");
+       ndo->ndo_protocol = "aarp";
+       ND_PRINT("aarp ");
        ap = (const struct aarp *)bp;
        ap = (const struct aarp *)bp;
-       if (ntohs(ap->htype) == 1 && ntohs(ap->ptype) == ETHERTYPE_ATALK &&
-           ap->halen == 6 && ap->palen == 4 )
-               switch (ntohs(ap->op)) {
+       ND_LCHECK_ZU(length, sizeof(*ap));
+       ND_TCHECK_SIZE(ap);
+       if (GET_BE_U_2(ap->htype) == 1 &&
+           GET_BE_U_2(ap->ptype) == ETHERTYPE_ATALK &&
+           GET_U_1(ap->halen) == MAC_ADDR_LEN && GET_U_1(ap->palen) == 4)
+               switch (GET_BE_U_2(ap->op)) {
 
                case 1:                         /* request */
 
                case 1:                         /* request */
-                       (void)printf("who-has %s tell %s",
-                           AT(pdaddr), AT(psaddr));
+                       ND_PRINT("who-has %s tell %s", AT(pdaddr), AT(psaddr));
                        return;
 
                case 2:                         /* response */
                        return;
 
                case 2:                         /* response */
-                       (void)printf("reply %s is-at %s",
-                           AT(pdaddr), etheraddr_string(ap->hdaddr));
+                       ND_PRINT("reply %s is-at %s", AT(psaddr), GET_ETHERADDR_STRING(ap->hsaddr));
                        return;
 
                case 3:                         /* probe (oy!) */
                        return;
 
                case 3:                         /* probe (oy!) */
-                       (void)printf("probe %s tell %s",
-                           AT(pdaddr), AT(psaddr));
+                       ND_PRINT("probe %s tell %s", AT(pdaddr), AT(psaddr));
                        return;
                }
                        return;
                }
-       (void)printf("len %u op %u htype %u ptype %#x halen %u palen %u",
-           length, ntohs(ap->op), ntohs(ap->htype), ntohs(ap->ptype),
-           ap->halen, ap->palen);
+       ND_PRINT("len %u op %u htype %u ptype %#x halen %u palen %u",
+           length, GET_BE_U_2(ap->op), GET_BE_U_2(ap->htype),
+           GET_BE_U_2(ap->ptype), GET_U_1(ap->halen), GET_U_1(ap->palen));
+       return;
+invalid:
+       nd_print_invalid(ndo);
 }
 
 }
 
+/*
+ * Print AppleTalk Datagram Delivery Protocol packets.
+ */
 static void
 static void
-ddp_print(register const u_char *bp, register u_int length, register int t,
-         register u_short snet, register u_char snode, u_char skt)
+ddp_print(netdissect_options *ndo,
+          const u_char *bp, u_int length, u_int t,
+          u_short snet, u_char snode, u_char skt)
 {
 
        switch (t) {
 
        case ddpNBP:
 {
 
        switch (t) {
 
        case ddpNBP:
-               nbp_print((const struct atNBP *)bp, length, snet, snode, skt);
+               nbp_print(ndo, (const struct atNBP *)bp, length, snet, snode, skt);
                break;
 
        case ddpATP:
                break;
 
        case ddpATP:
-               atp_print((const struct atATP *)bp, length);
+               atp_print(ndo, (const struct atATP *)bp, length);
+               break;
+
+       case ddpEIGRP:
+               eigrp_print(ndo, bp, length);
                break;
 
        default:
                break;
 
        default:
-               (void)printf(" at-%s %d", tok2str(type2str, NULL, t), length);
+               ND_PRINT(" at-%s %u", tok2str(type2str, NULL, t), length);
                break;
        }
 }
 
 static void
                break;
        }
 }
 
 static void
-atp_print(register const struct atATP *ap, u_int length)
+atp_print(netdissect_options *ndo,
+          const struct atATP *ap, u_int length)
 {
 {
-       char c;
-       u_int32_t data;
+       uint8_t control;
+       uint32_t data;
 
 
-       if ((const u_char *)(ap + 1) > snapend) {
-               /* Just bail if we don't have the whole chunk. */
-               fputs(tstr, stdout);
-               return;
-       }
+       ndo->ndo_protocol = "atp";
+       ND_LCHECKMSG_ZU(length, sizeof(*ap), "ATP length");
        length -= sizeof(*ap);
        length -= sizeof(*ap);
-       switch (ap->control & 0xc0) {
+       control = GET_U_1(ap->control);
+       switch (control & 0xc0) {
 
        case atpReqCode:
 
        case atpReqCode:
-               (void)printf(" atp-req%s %d",
-                            ap->control & atpXO? " " : "*",
-                            EXTRACT_16BITS(&ap->transID));
+               ND_PRINT(" atp-req%s %u",
+                            control & atpXO? " " : "*",
+                            GET_BE_U_2(ap->transID));
 
 
-               atp_bitmap_print(ap->bitmap);
+               atp_bitmap_print(ndo, GET_U_1(ap->bitmap));
 
                if (length != 0)
 
                if (length != 0)
-                       (void)printf(" [len=%d]", length);
+                       ND_PRINT(" [len=%u]", length);
 
 
-               switch (ap->control & (atpEOM|atpSTS)) {
+               switch (control & (atpEOM|atpSTS)) {
                case atpEOM:
                case atpEOM:
-                       (void)printf(" [EOM]");
+                       ND_PRINT(" [EOM]");
                        break;
                case atpSTS:
                        break;
                case atpSTS:
-                       (void)printf(" [STS]");
+                       ND_PRINT(" [STS]");
                        break;
                case atpEOM|atpSTS:
                        break;
                case atpEOM|atpSTS:
-                       (void)printf(" [EOM,STS]");
+                       ND_PRINT(" [EOM,STS]");
                        break;
                }
                break;
 
        case atpRspCode:
                        break;
                }
                break;
 
        case atpRspCode:
-               (void)printf(" atp-resp%s%d:%d (%d)",
-                            ap->control & atpEOM? "*" : " ",
-                            EXTRACT_16BITS(&ap->transID), ap->bitmap, length);
-               switch (ap->control & (atpXO|atpSTS)) {
+               ND_PRINT(" atp-resp%s%u:%u (%u)",
+                            control & atpEOM? "*" : " ",
+                            GET_BE_U_2(ap->transID), GET_U_1(ap->bitmap),
+                            length);
+               switch (control & (atpXO|atpSTS)) {
                case atpXO:
                case atpXO:
-                       (void)printf(" [XO]");
+                       ND_PRINT(" [XO]");
                        break;
                case atpSTS:
                        break;
                case atpSTS:
-                       (void)printf(" [STS]");
+                       ND_PRINT(" [STS]");
                        break;
                case atpXO|atpSTS:
                        break;
                case atpXO|atpSTS:
-                       (void)printf(" [XO,STS]");
+                       ND_PRINT(" [XO,STS]");
                        break;
                }
                break;
 
        case atpRelCode:
                        break;
                }
                break;
 
        case atpRelCode:
-               (void)printf(" atp-rel  %d", EXTRACT_16BITS(&ap->transID));
+               ND_PRINT(" atp-rel  %u", GET_BE_U_2(ap->transID));
 
 
-               atp_bitmap_print(ap->bitmap);
+               atp_bitmap_print(ndo, GET_U_1(ap->bitmap));
 
                /* length should be zero */
                if (length)
 
                /* length should be zero */
                if (length)
-                       (void)printf(" [len=%d]", length);
+                       ND_PRINT(" [len=%u]", length);
 
                /* there shouldn't be any control flags */
 
                /* there shouldn't be any control flags */
-               if (ap->control & (atpXO|atpEOM|atpSTS)) {
-                       c = '[';
-                       if (ap->control & atpXO) {
-                               (void)printf("%cXO", c);
+               if (control & (atpXO|atpEOM|atpSTS)) {
+                       char c = '[';
+                       if (control & atpXO) {
+                               ND_PRINT("%cXO", c);
                                c = ',';
                        }
                                c = ',';
                        }
-                       if (ap->control & atpEOM) {
-                               (void)printf("%cEOM", c);
+                       if (control & atpEOM) {
+                               ND_PRINT("%cEOM", c);
                                c = ',';
                        }
                                c = ',';
                        }
-                       if (ap->control & atpSTS) {
-                               (void)printf("%cSTS", c);
-                               c = ',';
+                       if (control & atpSTS) {
+                               ND_PRINT("%cSTS", c);
                        }
                        }
-                       (void)printf("]");
+                       ND_PRINT("]");
                }
                break;
 
        default:
                }
                break;
 
        default:
-               (void)printf(" atp-0x%x  %d (%d)", ap->control,
-                            EXTRACT_16BITS(&ap->transID), length);
+               ND_PRINT(" atp-0x%x  %u (%u)", control,
+                            GET_BE_U_2(ap->transID), length);
                break;
        }
                break;
        }
-       data = EXTRACT_32BITS(&ap->userData);
+       data = GET_BE_U_4(ap->userData);
        if (data != 0)
        if (data != 0)
-               (void)printf(" 0x%x", data);
+               ND_PRINT(" 0x%x", data);
+       return;
+invalid:
+       nd_print_invalid(ndo);
 }
 
 static void
 }
 
 static void
-atp_bitmap_print(register u_char bm)
+atp_bitmap_print(netdissect_options *ndo,
+                 u_char bm)
 {
 {
-       register char c;
-       register int i;
+       u_int i;
 
        /*
         * The '& 0xff' below is needed for compilers that want to sign
 
        /*
         * The '& 0xff' below is needed for compilers that want to sign
@@ -302,162 +429,146 @@ atp_bitmap_print(register u_char bm)
         * (gcc is smart enough to eliminate it, at least on the Sparc).
         */
        if ((bm + 1) & (bm & 0xff)) {
         * (gcc is smart enough to eliminate it, at least on the Sparc).
         */
        if ((bm + 1) & (bm & 0xff)) {
-               c = '<';
+               char c = '<';
                for (i = 0; bm; ++i) {
                        if (bm & 1) {
                for (i = 0; bm; ++i) {
                        if (bm & 1) {
-                               (void)printf("%c%d", c, i);
+                               ND_PRINT("%c%u", c, i);
                                c = ',';
                        }
                        bm >>= 1;
                }
                                c = ',';
                        }
                        bm >>= 1;
                }
-               (void)printf(">");
+               ND_PRINT(">");
        } else {
                for (i = 0; bm; ++i)
                        bm >>= 1;
                if (i > 1)
        } else {
                for (i = 0; bm; ++i)
                        bm >>= 1;
                if (i > 1)
-                       (void)printf("<0-%d>", i - 1);
+                       ND_PRINT("<0-%u>", i - 1);
                else
                else
-                       (void)printf("<0>");
+                       ND_PRINT("<0>");
        }
 }
 
 static void
        }
 }
 
 static void
-nbp_print(register const struct atNBP *np, u_int length, register u_short snet,
-         register u_char snode, register u_char skt)
+nbp_print(netdissect_options *ndo,
+          const struct atNBP *np, u_int length, u_short snet,
+          u_char snode, u_char skt)
 {
 {
-       register const struct atNBPtuple *tp =
-                       (struct atNBPtuple *)((u_char *)np + nbpHeaderSize);
-       int i;
-       const u_char *ep;
+       const struct atNBPtuple *tp =
+               (const struct atNBPtuple *)((const u_char *)np + nbpHeaderSize);
+       uint8_t control;
+       u_int i;
 
 
+       /* must be room for at least one tuple */
+       ND_LCHECKMSG_U(length, nbpHeaderSize + 8, "undersized-nbp");
        length -= nbpHeaderSize;
        length -= nbpHeaderSize;
-       if (length < 8) {
-               /* must be room for at least one tuple */
-               (void)printf(" truncated-nbp %d", length + nbpHeaderSize);
-               return;
-       }
-       /* ep points to end of available data */
-       ep = snapend;
-       if ((const u_char *)tp > ep) {
-               fputs(tstr, stdout);
-               return;
-       }
-       switch (i = np->control & 0xf0) {
+       control = GET_U_1(np->control);
+       ND_PRINT(" nbp-%s", tok2str(nbp_str, "0x%x", control & 0xf0));
+       ND_PRINT(" %u", GET_U_1(np->id));
+       switch (control & 0xf0) {
 
        case nbpBrRq:
        case nbpLkUp:
 
        case nbpBrRq:
        case nbpLkUp:
-               (void)printf(i == nbpLkUp? " nbp-lkup %d:":" nbp-brRq %d:",
-                            np->id);
-               if ((const u_char *)(tp + 1) > ep) {
-                       fputs(tstr, stdout);
-                       return;
-               }
-               (void)nbp_name_print(tp, ep);
+               ND_PRINT(":");
+               (void)nbp_name_print(ndo, tp);
                /*
                 * look for anomalies: the spec says there can only
                 * be one tuple, the address must match the source
                 * address and the enumerator should be zero.
                 */
                /*
                 * look for anomalies: the spec says there can only
                 * be one tuple, the address must match the source
                 * address and the enumerator should be zero.
                 */
-               if ((np->control & 0xf) != 1)
-                       (void)printf(" [ntup=%d]", np->control & 0xf);
-               if (tp->enumerator)
-                       (void)printf(" [enum=%d]", tp->enumerator);
-               if (EXTRACT_16BITS(&tp->net) != snet ||
-                   tp->node != snode || tp->skt != skt)
-                       (void)printf(" [addr=%s.%d]",
-                           ataddr_string(EXTRACT_16BITS(&tp->net),
-                           tp->node), tp->skt);
+               if ((control & 0xf) != 1)
+                       ND_PRINT(" [ntup=%u]", control & 0xf);
+               if (GET_U_1(tp->enumerator))
+                       ND_PRINT(" [enum=%u]", GET_U_1(tp->enumerator));
+               if (GET_BE_U_2(tp->net) != snet ||
+                   GET_U_1(tp->node) != snode ||
+                   GET_U_1(tp->skt) != skt)
+                       ND_PRINT(" [addr=%s.%u]",
+                           ataddr_string(ndo, GET_BE_U_2(tp->net),
+                                         GET_U_1(tp->node)),
+                           GET_U_1(tp->skt));
                break;
 
        case nbpLkUpReply:
                break;
 
        case nbpLkUpReply:
-               (void)printf(" nbp-reply %d:", np->id);
+               ND_PRINT(":");
 
                /* print each of the tuples in the reply */
 
                /* print each of the tuples in the reply */
-               for (i = np->control & 0xf; --i >= 0 && tp; )
-                       tp = nbp_tuple_print(tp, ep, snet, snode, skt);
+               for (i = control & 0xf; i != 0 && tp; i--)
+                       tp = nbp_tuple_print(ndo, tp, snet, snode, skt);
                break;
 
        default:
                break;
 
        default:
-               (void)printf(" nbp-0x%x  %d (%d)", np->control, np->id,
-                               length);
+               ND_PRINT("  (%u)", length);
                break;
        }
                break;
        }
+       return;
+invalid:
+       nd_print_invalid(ndo);
 }
 
 /* print a counted string */
 }
 
 /* print a counted string */
-static const char *
-print_cstring(register const char *cp, register const u_char *ep)
+static const u_char *
+print_cstring(netdissect_options *ndo,
+              const u_char *cp)
 {
 {
-       register u_int length;
+       u_int length;
 
 
-       if (cp >= (const char *)ep) {
-               fputs(tstr, stdout);
-               return (0);
-       }
-       length = *cp++;
+       length = GET_U_1(cp);
+       cp++;
 
        /* Spec says string can be at most 32 bytes long */
        if (length > 32) {
 
        /* Spec says string can be at most 32 bytes long */
        if (length > 32) {
-               (void)printf("[len=%u]", length);
-               return (0);
+               ND_PRINT("[len=%u]", length);
+               ND_TCHECK_LEN(cp, length);
+               return NULL;
        }
        }
-       while ((int)--length >= 0) {
-               if (cp >= (char *)ep) {
-                       fputs(tstr, stdout);
-                       return (0);
-               }
-               putchar(*cp++);
-       }
-       return (cp);
+       nd_printjn(ndo, cp, length);
+       return cp + length;
 }
 
 static const struct atNBPtuple *
 }
 
 static const struct atNBPtuple *
-nbp_tuple_print(register const struct atNBPtuple *tp,
-               register const u_char *ep,
-               register u_short snet, register u_char snode,
-               register u_char skt)
+nbp_tuple_print(netdissect_options *ndo,
+                const struct atNBPtuple *tp,
+                u_short snet, u_char snode, u_char skt)
 {
 {
-       register const struct atNBPtuple *tpn;
+       const struct atNBPtuple *tpn;
 
 
-       if ((const u_char *)(tp + 1) > ep) {
-               fputs(tstr, stdout);
-               return 0;
-       }
-       tpn = nbp_name_print(tp, ep);
+       tpn = nbp_name_print(ndo, tp);
 
        /* if the enumerator isn't 1, print it */
 
        /* if the enumerator isn't 1, print it */
-       if (tp->enumerator != 1)
-               (void)printf("(%d)", tp->enumerator);
+       if (GET_U_1(tp->enumerator) != 1)
+               ND_PRINT("(%u)", GET_U_1(tp->enumerator));
 
        /* if the socket doesn't match the src socket, print it */
 
        /* if the socket doesn't match the src socket, print it */
-       if (tp->skt != skt)
-               (void)printf(" %d", tp->skt);
+       if (GET_U_1(tp->skt) != skt)
+               ND_PRINT(" %u", GET_U_1(tp->skt));
 
        /* if the address doesn't match the src address, it's an anomaly */
 
        /* if the address doesn't match the src address, it's an anomaly */
-       if (EXTRACT_16BITS(&tp->net) != snet || tp->node != snode)
-               (void)printf(" [addr=%s]",
-                   ataddr_string(EXTRACT_16BITS(&tp->net), tp->node));
+       if (GET_BE_U_2(tp->net) != snet ||
+           GET_U_1(tp->node) != snode)
+               ND_PRINT(" [addr=%s]",
+                   ataddr_string(ndo, GET_BE_U_2(tp->net), GET_U_1(tp->node)));
 
        return (tpn);
 }
 
 static const struct atNBPtuple *
 
        return (tpn);
 }
 
 static const struct atNBPtuple *
-nbp_name_print(const struct atNBPtuple *tp, register const u_char *ep)
+nbp_name_print(netdissect_options *ndo,
+               const struct atNBPtuple *tp)
 {
 {
-       register const char *cp = (const char *)tp + nbpTupleSize;
+       const u_char *cp = (const u_char *)tp + nbpTupleSize;
 
 
-       putchar(' ');
+       ND_PRINT(" ");
 
        /* Object */
 
        /* Object */
-       putchar('"');
-       if ((cp = print_cstring(cp, ep)) != NULL) {
+       ND_PRINT("\"");
+       if ((cp = print_cstring(ndo, cp)) != NULL) {
                /* Type */
                /* Type */
-               putchar(':');
-               if ((cp = print_cstring(cp, ep)) != NULL) {
+               ND_PRINT(":");
+               if ((cp = print_cstring(ndo, cp)) != NULL) {
                        /* Zone */
                        /* Zone */
-                       putchar('@');
-                       if ((cp = print_cstring(cp, ep)) != NULL)
-                               putchar('"');
+                       ND_PRINT("@");
+                       if ((cp = print_cstring(ndo, cp)) != NULL)
+                               ND_PRINT("\"");
                }
        }
        return ((const struct atNBPtuple *)cp);
                }
        }
        return ((const struct atNBPtuple *)cp);
@@ -467,7 +578,7 @@ nbp_name_print(const struct atNBPtuple *tp, register const u_char *ep)
 #define HASHNAMESIZE 4096
 
 struct hnamemem {
 #define HASHNAMESIZE 4096
 
 struct hnamemem {
-       int addr;
+       u_int addr;
        char *name;
        struct hnamemem *nxt;
 };
        char *name;
        struct hnamemem *nxt;
 };
@@ -475,47 +586,67 @@ struct hnamemem {
 static struct hnamemem hnametable[HASHNAMESIZE];
 
 static const char *
 static struct hnamemem hnametable[HASHNAMESIZE];
 
 static const char *
-ataddr_string(u_short atnet, u_char athost)
+ataddr_string(netdissect_options *ndo,
+              u_short atnet, u_char athost)
 {
 {
-       register struct hnamemem *tp, *tp2;
-       register int i = (atnet << 8) | athost;
-       char nambuf[MAXHOSTNAMELEN + 20];
+       struct hnamemem *tp, *tp2;
+       u_int i = (atnet << 8) | athost;
+       char nambuf[256+1];
        static int first = 1;
        FILE *fp;
 
        /*
        static int first = 1;
        FILE *fp;
 
        /*
-        * if this is the first call, see if there's an AppleTalk
-        * number to name map file.
+        * Are we doing address to name resolution?
         */
         */
-       if (first && (first = 0, !nflag)
-           && (fp = fopen("/etc/atalk.names", "r"))) {
-               char line[256];
-               int i1, i2, i3;
-
-               while (fgets(line, sizeof(line), fp)) {
-                       if (line[0] == '\n' || line[0] == 0 || line[0] == '#')
-                               continue;
-                       if (sscanf(line, "%d.%d.%d %256s", &i1, &i2, &i3,
-                                    nambuf) == 4)
-                               /* got a hostname. */
-                               i3 |= ((i1 << 8) | i2) << 8;
-                       else if (sscanf(line, "%d.%d %256s", &i1, &i2,
-                                       nambuf) == 3)
-                               /* got a net name */
-                               i3 = (((i1 << 8) | i2) << 8) | 255;
-                       else
-                               continue;
-
-                       for (tp = &hnametable[i3 & (HASHNAMESIZE-1)];
-                            tp->nxt; tp = tp->nxt)
-                               ;
-                       tp->addr = i3;
-                       tp->nxt = newhnamemem();
-                       tp->name = savestr(nambuf);
+       if (!ndo->ndo_nflag) {
+               /*
+                * Yes.  Have we tried to open and read an AppleTalk
+                * number to name map file?
+                */
+               if (!first) {
+                       /*
+                        * No; try to do so.
+                        */
+                       first = 0;
+                       fp = fopen("/etc/atalk.names", "r");
+                       if (fp != NULL) {
+                               char line[256];
+                               u_int i1, i2;
+
+                               while (fgets(line, sizeof(line), fp)) {
+                                       if (line[0] == '\n' || line[0] == 0 ||
+                                           line[0] == '#')
+                                               continue;
+                                       if (sscanf(line, "%u.%u %256s", &i1,
+                                           &i2, nambuf) == 3)
+                                               /* got a hostname. */
+                                               i2 |= (i1 << 8);
+                                       else if (sscanf(line, "%u %256s", &i1,
+                                           nambuf) == 2)
+                                               /* got a net name */
+                                               i2 = (i1 << 8) | 255;
+                                       else
+                                               continue;
+
+                                       for (tp = &hnametable[i2 & (HASHNAMESIZE-1)];
+                                            tp->nxt; tp = tp->nxt)
+                                               ;
+                                       tp->addr = i2;
+                                       tp->nxt = newhnamemem(ndo);
+                                       tp->name = strdup(nambuf);
+                                       if (tp->name == NULL)
+                                               (*ndo->ndo_error)(ndo,
+                                                   S_ERR_ND_MEM_ALLOC,
+                                                   "%s: strdup(nambuf)", __func__);
+                               }
+                               fclose(fp);
+                       }
                }
                }
-               fclose(fp);
        }
 
        }
 
+       /*
+        * Now try to look up the address in the table.
+        */
        for (tp = &hnametable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt)
                if (tp->addr == i)
                        return (tp->name);
        for (tp = &hnametable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt)
                if (tp->addr == i)
                        return (tp->name);
@@ -525,27 +656,35 @@ ataddr_string(u_short atnet, u_char athost)
        for (tp2 = &hnametable[i & (HASHNAMESIZE-1)]; tp2->nxt; tp2 = tp2->nxt)
                if (tp2->addr == i) {
                        tp->addr = (atnet << 8) | athost;
        for (tp2 = &hnametable[i & (HASHNAMESIZE-1)]; tp2->nxt; tp2 = tp2->nxt)
                if (tp2->addr == i) {
                        tp->addr = (atnet << 8) | athost;
-                       tp->nxt = newhnamemem();
-                       (void)snprintf(nambuf, sizeof(nambuf), "%s.%d",
+                       tp->nxt = newhnamemem(ndo);
+                       (void)snprintf(nambuf, sizeof(nambuf), "%s.%u",
                            tp2->name, athost);
                            tp2->name, athost);
-                       tp->name = savestr(nambuf);
+                       tp->name = strdup(nambuf);
+                       if (tp->name == NULL)
+                               (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC,
+                                       "%s: strdup(nambuf)", __func__);
                        return (tp->name);
                }
 
        tp->addr = (atnet << 8) | athost;
                        return (tp->name);
                }
 
        tp->addr = (atnet << 8) | athost;
-       tp->nxt = newhnamemem();
+       tp->nxt = newhnamemem(ndo);
        if (athost != 255)
        if (athost != 255)
-               (void)snprintf(nambuf, sizeof(nambuf), "%d.%d.%d",
-                   atnet >> 8, atnet & 0xff, athost);
+               (void)snprintf(nambuf, sizeof(nambuf), "%u.%u", atnet, athost);
        else
        else
-               (void)snprintf(nambuf, sizeof(nambuf), "%d.%d", atnet >> 8,
-                   atnet & 0xff);
-       tp->name = savestr(nambuf);
+               (void)snprintf(nambuf, sizeof(nambuf), "%u", atnet);
+       tp->name = strdup(nambuf);
+       if (tp->name == NULL)
+               (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC,
+                                 "%s: strdup(nambuf)", __func__);
 
        return (tp->name);
 }
 
 
        return (tp->name);
 }
 
-static struct tok skt2str[] = {
+#define rtmpSkt 1
+#define nbpSkt  2
+#define echoSkt 4
+#define zipSkt  6
+static const struct tok skt2str[] = {
        { rtmpSkt,      "rtmp" },       /* routing table maintenance */
        { nbpSkt,       "nis" },        /* name info socket */
        { echoSkt,      "echo" },       /* AppleTalk echo protocol */
        { rtmpSkt,      "rtmp" },       /* routing table maintenance */
        { nbpSkt,       "nis" },        /* name info socket */
        { echoSkt,      "echo" },       /* AppleTalk echo protocol */
@@ -554,13 +693,14 @@ static struct tok skt2str[] = {
 };
 
 static const char *
 };
 
 static const char *
-ddpskt_string(register int skt)
+ddpskt_string(netdissect_options *ndo,
+              u_int skt)
 {
        static char buf[8];
 
 {
        static char buf[8];
 
-       if (nflag) {
-               (void)snprintf(buf, sizeof(buf), "%d", skt);
+       if (ndo->ndo_nflag) {
+               (void)snprintf(buf, sizeof(buf), "%u", skt);
                return (buf);
        }
                return (buf);
        }
-       return (tok2str(skt2str, "%d", skt));
+       return (tok2str(skt2str, "%u", skt));
 }
 }
[mirror] the TCPdump network dissector