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Use more the ND_TTEST_1() macro
[tcpdump] / print-atalk.c
diff --git a/print-atalk.c b/print-atalk.c
index fd75f756dc37be71390e1385fc9ce11febd8512e..6ba77d3e5c9533b9ad3ab732bb24049ff0fae013 100644 (file)
--- a/print-atalk.c
+++ b/print-atalk.c
@@ -17,42 +17,28 @@
  * 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 1.60 2000-10-05 04:10:01 itojun Exp $ (LBL)";
-#endif
+/* \summary: AppleTalk printer */
 
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
 
 
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
 
-#include <sys/param.h>
-#include <sys/time.h>
-#include <sys/socket.h>
-
-#if __STDC__
-struct mbuf;
-struct rtentry;
-#endif
-
-#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"
+#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[] = {
+static const char tstr[] = "[|atalk]";
+
+static const struct tok type2str[] = {
        { ddpRTMP,              "rtmp" },
        { ddpRTMPrequest,       "rtmpReq" },
        { ddpECHO,              "echo" },
        { ddpRTMP,              "rtmp" },
        { ddpRTMPrequest,       "rtmpReq" },
        { ddpECHO,              "echo" },
@@ -63,76 +49,111 @@ 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;
+       uint8_t         hsaddr[6];
+       uint8_t         psaddr[4];
+       uint8_t         hdaddr[6];
+       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 *,
+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 *,
                                                const u_char *,
                                                u_short, u_char, u_char);
                                                const u_char *,
                                                u_short, u_char, u_char);
-static const struct atNBPtuple *nbp_name_print(const struct atNBPtuple *,
+static const struct atNBPtuple *nbp_name_print(netdissect_options *, const struct atNBPtuple *,
                                               const u_char *);
                                               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 char *ataddr_string(netdissect_options *, u_short, u_char);
+static void ddp_print(netdissect_options *, const u_char *, u_int, int, u_short, u_char, u_char);
+static const char *ddpskt_string(netdissect_options *, int);
 
 /*
 
 /*
- * Print AppleTalk Datagram Delivery Protocol packets.
+ * Print LLAP packets received on a physical LocalTalk interface.
  */
  */
-void
-atalk_print(register const u_char *bp, u_int length)
+u_int
+ltalk_if_print(netdissect_options *ndo,
+               const struct pcap_pkthdr *h, const u_char *p)
+{
+       u_int hdrlen;
+
+       hdrlen = llap_print(ndo, p, h->len);
+       if (hdrlen == 0) {
+               /* Cut short by the snapshot length. */
+               return (h->caplen);
+       }
+       return (hdrlen);
+}
+
+/*
+ * Print AppleTalk LLAP packets.
+ */
+u_int
+llap_print(netdissect_options *ndo,
+           const u_char *bp, u_int length)
 {
 {
-       register const struct LAP *lp;
-       register const struct atDDP *dp;
-       register const struct atShortDDP *sdp;
+       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;
+       if (length < sizeof(*lp)) {
+               ND_PRINT((ndo, " [|llap %u]", length));
+               return (length);
+       }
+       if (!ND_TTEST_LEN(bp, sizeof(*lp))) {
+               ND_PRINT((ndo, " [|llap]"));
+               return (0);     /* cut short by the snapshot 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 (EXTRACT_U_1(lp->type)) {
 
        case lapShortDDP:
                if (length < ddpSSize) {
 
        case lapShortDDP:
                if (length < ddpSSize) {
-                       (void)printf(" [|sddp %d]", length);
-                       return;
+                       ND_PRINT((ndo, " [|sddp %u]", length));
+                       return (length);
+               }
+               if (!ND_TTEST_LEN(bp, ddpSSize)) {
+                       ND_PRINT((ndo, " [|sddp]"));
+                       return (0);     /* cut short by the snapshot 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((ndo, "%s.%s",
+                   ataddr_string(ndo, 0, EXTRACT_U_1(lp->src)), ddpskt_string(ndo, EXTRACT_U_1(sdp->srcSkt))));
+               ND_PRINT((ndo, " > %s.%s:",
+                   ataddr_string(ndo, 0, EXTRACT_U_1(lp->dst)), ddpskt_string(ndo, EXTRACT_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, EXTRACT_U_1(sdp->type), 0, EXTRACT_U_1(lp->src), EXTRACT_U_1(sdp->srcSkt));
                break;
 
        case lapDDP:
                if (length < ddpSize) {
                break;
 
        case lapDDP:
                if (length < ddpSize) {
-                       (void)printf(" [|ddp %d]", length);
-                       return;
+                       ND_PRINT((ndo, " [|ddp %u]", length));
+                       return (length);
+               }
+               if (!ND_TTEST_LEN(bp, ddpSize)) {
+                       ND_PRINT((ndo, " [|ddp]"));
+                       return (0);     /* cut short by the snapshot 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 = EXTRACT_BE_U_2(dp->srcNet);
+               ND_PRINT((ndo, "%s.%s", ataddr_string(ndo, snet, EXTRACT_U_1(dp->srcNode)),
+                   ddpskt_string(ndo, EXTRACT_U_1(dp->srcSkt))));
+               ND_PRINT((ndo, " > %s.%s:",
+                   ataddr_string(ndo, EXTRACT_BE_U_2(dp->dstNet), EXTRACT_U_1(dp->dstNode)),
+                   ddpskt_string(ndo, EXTRACT_U_1(dp->dstSkt))));
                bp += ddpSize;
                length -= ddpSize;
                bp += ddpSize;
                length -= ddpSize;
-               ddp_print(bp, length, dp->type, snet, dp->srcNode, dp->srcSkt);
+               hdrlen += ddpSize;
+               ddp_print(ndo, bp, length, EXTRACT_U_1(dp->type), snet, EXTRACT_U_1(dp->srcNode), EXTRACT_U_1(dp->srcSkt));
                break;
 
 #ifdef notdef
                break;
 
 #ifdef notdef
@@ -142,164 +163,221 @@ atalk_print(register const u_char *bp, u_int length)
 #endif
 
        default:
 #endif
 
        default:
-               printf("%d > %d at-lap#%d %d",
-                   lp->src, lp->dst, lp->type, length);
+               ND_PRINT((ndo, "%u > %u at-lap#%u %u",
+                   EXTRACT_U_1(lp->src), EXTRACT_U_1(lp->dst), EXTRACT_U_1(lp->type), length));
                break;
        }
                break;
        }
+       return (hdrlen);
+}
+
+/*
+ * 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;
+
+        if(!ndo->ndo_eflag)
+            ND_PRINT((ndo, "AT "));
+
+       if (length < ddpSize) {
+               ND_PRINT((ndo, " [|ddp %u]", length));
+               return;
+       }
+       if (!ND_TTEST_LEN(bp, ddpSize)) {
+               ND_PRINT((ndo, " [|ddp]"));
+               return;
+       }
+       dp = (const struct atDDP *)bp;
+       snet = EXTRACT_BE_U_2(dp->srcNet);
+       ND_PRINT((ndo, "%s.%s", ataddr_string(ndo, snet, EXTRACT_U_1(dp->srcNode)),
+              ddpskt_string(ndo, EXTRACT_U_1(dp->srcSkt))));
+       ND_PRINT((ndo, " > %s.%s: ",
+              ataddr_string(ndo, EXTRACT_BE_U_2(dp->dstNet), EXTRACT_U_1(dp->dstNode)),
+              ddpskt_string(ndo, EXTRACT_U_1(dp->dstSkt))));
+       bp += ddpSize;
+       length -= ddpSize;
+       ddp_print(ndo, bp, length, EXTRACT_U_1(dp->type), snet, EXTRACT_U_1(dp->srcNode), EXTRACT_U_1(dp->srcSkt));
 }
 
 /* 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, (ap->member[1]<<8)|ap->member[2],ap->member[3])
 
 
-       printf("aarp ");
+       ND_PRINT((ndo, "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)) {
+       if (!ND_TTEST(*ap)) {
+               /* Just bail if we don't have the whole chunk. */
+               ND_PRINT((ndo, " [|aarp]"));
+               return;
+       }
+       if (length < sizeof(*ap)) {
+               ND_PRINT((ndo, " [|aarp %u]", length));
+               return;
+       }
+       if (EXTRACT_BE_U_2(ap->htype) == 1 &&
+           EXTRACT_BE_U_2(ap->ptype) == ETHERTYPE_ATALK &&
+           EXTRACT_U_1(ap->halen) == 6 && EXTRACT_U_1(ap->palen) == 4 )
+               switch (EXTRACT_BE_U_2(ap->op)) {
 
                case 1:                         /* request */
 
                case 1:                         /* request */
-                       (void)printf("who-has %s tell %s",
-                           AT(pdaddr), AT(psaddr));
+                       ND_PRINT((ndo, "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((ndo, "reply %s is-at %s", AT(psaddr), etheraddr_string(ndo, ap->hsaddr)));
                        return;
 
                case 3:                         /* probe (oy!) */
                        return;
 
                case 3:                         /* probe (oy!) */
-                       (void)printf("probe %s tell %s",
-                           AT(pdaddr), AT(psaddr));
+                       ND_PRINT((ndo, "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((ndo, "len %u op %u htype %u ptype %#x halen %u palen %u",
+           length, EXTRACT_BE_U_2(ap->op), EXTRACT_BE_U_2(ap->htype),
+           EXTRACT_BE_U_2(ap->ptype), EXTRACT_U_1(ap->halen), EXTRACT_U_1(ap->palen)));
 }
 
 }
 
+/*
+ * 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, 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((ndo, " at-%s %d", 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) {
+       if ((const u_char *)(ap + 1) > ndo->ndo_snapend) {
                /* Just bail if we don't have the whole chunk. */
                /* Just bail if we don't have the whole chunk. */
-               fputs(tstr, stdout);
+               ND_PRINT((ndo, "%s", tstr));
+               return;
+       }
+       if (length < sizeof(*ap)) {
+               ND_PRINT((ndo, " [|atp %u]", length));
                return;
        }
        length -= sizeof(*ap);
                return;
        }
        length -= sizeof(*ap);
-       switch (ap->control & 0xc0) {
+       control = EXTRACT_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((ndo, " atp-req%s %u",
+                            control & atpXO? " " : "*",
+                            EXTRACT_BE_U_2(ap->transID)));
 
 
-               atp_bitmap_print(ap->bitmap);
+               atp_bitmap_print(ndo, EXTRACT_U_1(ap->bitmap));
 
                if (length != 0)
 
                if (length != 0)
-                       (void)printf(" [len=%d]", length);
+                       ND_PRINT((ndo, " [len=%u]", length));
 
 
-               switch (ap->control & (atpEOM|atpSTS)) {
+               switch (control & (atpEOM|atpSTS)) {
                case atpEOM:
                case atpEOM:
-                       (void)printf(" [EOM]");
+                       ND_PRINT((ndo, " [EOM]"));
                        break;
                case atpSTS:
                        break;
                case atpSTS:
-                       (void)printf(" [STS]");
+                       ND_PRINT((ndo, " [STS]"));
                        break;
                case atpEOM|atpSTS:
                        break;
                case atpEOM|atpSTS:
-                       (void)printf(" [EOM,STS]");
+                       ND_PRINT((ndo, " [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((ndo, " atp-resp%s%d:%u (%u)",
+                            control & atpEOM? "*" : " ",
+                            EXTRACT_BE_U_2(ap->transID), EXTRACT_U_1(ap->bitmap), length));
+               switch (control & (atpXO|atpSTS)) {
                case atpXO:
                case atpXO:
-                       (void)printf(" [XO]");
+                       ND_PRINT((ndo, " [XO]"));
                        break;
                case atpSTS:
                        break;
                case atpSTS:
-                       (void)printf(" [STS]");
+                       ND_PRINT((ndo, " [STS]"));
                        break;
                case atpXO|atpSTS:
                        break;
                case atpXO|atpSTS:
-                       (void)printf(" [XO,STS]");
+                       ND_PRINT((ndo, " [XO,STS]"));
                        break;
                }
                break;
 
        case atpRelCode:
                        break;
                }
                break;
 
        case atpRelCode:
-               (void)printf(" atp-rel  %d", EXTRACT_16BITS(&ap->transID));
+               ND_PRINT((ndo, " atp-rel  %u", EXTRACT_BE_U_2(ap->transID)));
 
 
-               atp_bitmap_print(ap->bitmap);
+               atp_bitmap_print(ndo, EXTRACT_U_1(ap->bitmap));
 
                /* length should be zero */
                if (length)
 
                /* length should be zero */
                if (length)
-                       (void)printf(" [len=%d]", length);
+                       ND_PRINT((ndo, " [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((ndo, "%cXO", c));
                                c = ',';
                        }
                                c = ',';
                        }
-                       if (ap->control & atpEOM) {
-                               (void)printf("%cEOM", c);
+                       if (control & atpEOM) {
+                               ND_PRINT((ndo, "%cEOM", c));
                                c = ',';
                        }
                                c = ',';
                        }
-                       if (ap->control & atpSTS) {
-                               (void)printf("%cSTS", c);
-                               c = ',';
+                       if (control & atpSTS) {
+                               ND_PRINT((ndo, "%cSTS", c));
                        }
                        }
-                       (void)printf("]");
+                       ND_PRINT((ndo, "]"));
                }
                break;
 
        default:
                }
                break;
 
        default:
-               (void)printf(" atp-0x%x  %d (%d)", ap->control,
-                            EXTRACT_16BITS(&ap->transID), length);
+               ND_PRINT((ndo, " atp-0x%x  %d (%u)", control,
+                            EXTRACT_BE_U_2(ap->transID), length));
                break;
        }
                break;
        }
-       data = EXTRACT_32BITS(&ap->userData);
+       data = EXTRACT_BE_U_4(ap->userData);
        if (data != 0)
        if (data != 0)
-               (void)printf(" 0x%x", data);
+               ND_PRINT((ndo, " 0x%x", data));
 }
 
 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;
+       int i;
 
        /*
         * The '& 0xff' below is needed for compilers that want to sign
 
        /*
         * The '& 0xff' below is needed for compilers that want to sign
@@ -307,162 +385,175 @@ 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((ndo, "%c%d", c, i));
                                c = ',';
                        }
                        bm >>= 1;
                }
                                c = ',';
                        }
                        bm >>= 1;
                }
-               (void)printf(">");
+               ND_PRINT((ndo, ">"));
        } 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((ndo, "<0-%d>", i - 1));
                else
                else
-                       (void)printf("<0>");
+                       ND_PRINT((ndo, "<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);
+       const struct atNBPtuple *tp =
+               (const struct atNBPtuple *)((const u_char *)np + nbpHeaderSize);
+       uint8_t control;
        int i;
        const u_char *ep;
 
        int i;
        const u_char *ep;
 
+       if (length < nbpHeaderSize) {
+               ND_PRINT((ndo, " truncated-nbp %u", length));
+               return;
+       }
+
        length -= nbpHeaderSize;
        if (length < 8) {
                /* must be room for at least one tuple */
        length -= nbpHeaderSize;
        if (length < 8) {
                /* must be room for at least one tuple */
-               (void)printf(" truncated-nbp %d", length + nbpHeaderSize);
+               ND_PRINT((ndo, " truncated-nbp %u", length + nbpHeaderSize));
                return;
        }
        /* ep points to end of available data */
                return;
        }
        /* ep points to end of available data */
-       ep = snapend;
+       ep = ndo->ndo_snapend;
        if ((const u_char *)tp > ep) {
        if ((const u_char *)tp > ep) {
-               fputs(tstr, stdout);
+               ND_PRINT((ndo, "%s", tstr));
                return;
        }
                return;
        }
-       switch (i = np->control & 0xf0) {
+       control = EXTRACT_U_1(np->control);
+       switch (i = (control & 0xf0)) {
 
        case nbpBrRq:
        case nbpLkUp:
 
        case nbpBrRq:
        case nbpLkUp:
-               (void)printf(i == nbpLkUp? " nbp-lkup %d:":" nbp-brRq %d:",
-                            np->id);
+               ND_PRINT((ndo, i == nbpLkUp? " nbp-lkup %u:":" nbp-brRq %u:", EXTRACT_U_1(np->id)));
                if ((const u_char *)(tp + 1) > ep) {
                if ((const u_char *)(tp + 1) > ep) {
-                       fputs(tstr, stdout);
+                       ND_PRINT((ndo, "%s", tstr));
                        return;
                }
                        return;
                }
-               (void)nbp_name_print(tp, ep);
+               (void)nbp_name_print(ndo, tp, ep);
                /*
                 * 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((ndo, " [ntup=%u]", control & 0xf));
+               if (EXTRACT_U_1(tp->enumerator))
+                       ND_PRINT((ndo, " [enum=%u]", EXTRACT_U_1(tp->enumerator)));
+               if (EXTRACT_BE_U_2(tp->net) != snet ||
+                   EXTRACT_U_1(tp->node) != snode ||
+                   EXTRACT_U_1(tp->skt) != skt)
+                       ND_PRINT((ndo, " [addr=%s.%d]",
+                           ataddr_string(ndo, EXTRACT_BE_U_2(tp->net),
+                                         EXTRACT_U_1(tp->node)),
+                                         EXTRACT_U_1(tp->skt)));
                break;
 
        case nbpLkUpReply:
                break;
 
        case nbpLkUpReply:
-               (void)printf(" nbp-reply %d:", np->id);
+               ND_PRINT((ndo, " nbp-reply %u:", EXTRACT_U_1(np->id)));
 
                /* 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; )
+                       tp = nbp_tuple_print(ndo, tp, ep, snet, snode, skt);
                break;
 
        default:
                break;
 
        default:
-               (void)printf(" nbp-0x%x  %d (%d)", np->control, np->id,
-                               length);
+               ND_PRINT((ndo, " nbp-0x%x  %u (%u)", control, EXTRACT_U_1(np->id), length));
                break;
        }
 }
 
 /* print a counted string */
 static const char *
                break;
        }
 }
 
 /* print a counted string */
 static const char *
-print_cstring(register const char *cp, register const u_char *ep)
+print_cstring(netdissect_options *ndo,
+              const char *cp, const u_char *ep)
 {
 {
-       register u_int length;
+       u_int length;
 
        if (cp >= (const char *)ep) {
 
        if (cp >= (const char *)ep) {
-               fputs(tstr, stdout);
+               ND_PRINT((ndo, "%s", tstr));
                return (0);
        }
                return (0);
        }
-       length = *cp++;
+       length = EXTRACT_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);
+               ND_PRINT((ndo, "[len=%u]", length));
                return (0);
        }
                return (0);
        }
-       while ((int)--length >= 0) {
-               if (cp >= (char *)ep) {
-                       fputs(tstr, stdout);
+       while (length != 0) {
+               if (cp >= (const char *)ep) {
+                       ND_PRINT((ndo, "%s", tstr));
                        return (0);
                }
                        return (0);
                }
-               putchar(*cp++);
+               ND_PRINT((ndo, "%c", EXTRACT_U_1(cp)));
+               cp++;
+               length--;
        }
        return (cp);
 }
 
 static const struct atNBPtuple *
        }
        return (cp);
 }
 
 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, const u_char *ep,
+                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) {
 
        if ((const u_char *)(tp + 1) > ep) {
-               fputs(tstr, stdout);
+               ND_PRINT((ndo, "%s", tstr));
                return 0;
        }
                return 0;
        }
-       tpn = nbp_name_print(tp, ep);
+       tpn = nbp_name_print(ndo, tp, ep);
 
        /* 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 (EXTRACT_U_1(tp->enumerator) != 1)
+               ND_PRINT((ndo, "(%u)", EXTRACT_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 (EXTRACT_U_1(tp->skt) != skt)
+               ND_PRINT((ndo, " %u", EXTRACT_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 (EXTRACT_BE_U_2(tp->net) != snet ||
+           EXTRACT_U_1(tp->node) != snode)
+               ND_PRINT((ndo, " [addr=%s]",
+                   ataddr_string(ndo, EXTRACT_BE_U_2(tp->net), EXTRACT_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, const u_char *ep)
 {
 {
-       register const char *cp = (const char *)tp + nbpTupleSize;
+       const char *cp = (const char *)tp + nbpTupleSize;
 
 
-       putchar(' ');
+       ND_PRINT((ndo, " "));
 
        /* Object */
 
        /* Object */
-       putchar('"');
-       if ((cp = print_cstring(cp, ep)) != NULL) {
+       ND_PRINT((ndo, "\""));
+       if ((cp = print_cstring(ndo, cp, ep)) != NULL) {
                /* Type */
                /* Type */
-               putchar(':');
-               if ((cp = print_cstring(cp, ep)) != NULL) {
+               ND_PRINT((ndo, ":"));
+               if ((cp = print_cstring(ndo, cp, ep)) != NULL) {
                        /* Zone */
                        /* Zone */
-                       putchar('@');
-                       if ((cp = print_cstring(cp, ep)) != NULL)
-                               putchar('"');
+                       ND_PRINT((ndo, "@"));
+                       if ((cp = print_cstring(ndo, cp, ep)) != NULL)
+                               ND_PRINT((ndo, "\""));
                }
        }
        return ((const struct atNBPtuple *)cp);
                }
        }
        return ((const struct atNBPtuple *)cp);
@@ -480,11 +571,12 @@ 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;
+       int i = (atnet << 8) | athost;
+       char nambuf[256+1];
        static int first = 1;
        FILE *fp;
 
        static int first = 1;
        FILE *fp;
 
@@ -492,31 +584,32 @@ ataddr_string(u_short atnet, u_char athost)
         * if this is the first call, see if there's an AppleTalk
         * number to name map file.
         */
         * if this is the first call, see if there's an AppleTalk
         * number to name map file.
         */
-       if (first && (first = 0, !nflag)
+       if (first && (first = 0, !ndo->ndo_nflag)
            && (fp = fopen("/etc/atalk.names", "r"))) {
                char line[256];
            && (fp = fopen("/etc/atalk.names", "r"))) {
                char line[256];
-               int i1, i2, i3;
+               int i1, i2;
 
                while (fgets(line, sizeof(line), fp)) {
                        if (line[0] == '\n' || line[0] == 0 || line[0] == '#')
                                continue;
 
                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)
+                       if (sscanf(line, "%d.%d %256s", &i1, &i2, nambuf) == 3)
                                /* got a hostname. */
                                /* got a hostname. */
-                               i3 |= ((i1 << 8) | i2) << 8;
-                       else if (sscanf(line, "%d.%d %256s", &i1, &i2,
-                                       nambuf) == 3)
+                               i2 |= (i1 << 8);
+                       else if (sscanf(line, "%d %256s", &i1, nambuf) == 2)
                                /* got a net name */
                                /* got a net name */
-                               i3 = (((i1 << 8) | i2) << 8) | 255;
+                               i2 = (i1 << 8) | 255;
                        else
                                continue;
 
                        else
                                continue;
 
-                       for (tp = &hnametable[i3 & (HASHNAMESIZE-1)];
+                       for (tp = &hnametable[i2 & (HASHNAMESIZE-1)];
                             tp->nxt; tp = tp->nxt)
                                ;
                             tp->nxt; tp = tp->nxt)
                                ;
-                       tp->addr = i3;
-                       tp->nxt = newhnamemem();
-                       tp->name = savestr(nambuf);
+                       tp->addr = i2;
+                       tp->nxt = newhnamemem(ndo);
+                       tp->name = strdup(nambuf);
+                       if (tp->name == NULL)
+                               (*ndo->ndo_error)(ndo,
+                                                 "ataddr_string: strdup(nambuf)");
                }
                fclose(fp);
        }
                }
                fclose(fp);
        }
@@ -530,27 +623,30 @@ 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();
+                       tp->nxt = newhnamemem(ndo);
                        (void)snprintf(nambuf, sizeof(nambuf), "%s.%d",
                            tp2->name, athost);
                        (void)snprintf(nambuf, sizeof(nambuf), "%s.%d",
                            tp2->name, athost);
-                       tp->name = savestr(nambuf);
+                       tp->name = strdup(nambuf);
+                       if (tp->name == NULL)
+                               (*ndo->ndo_error)(ndo,
+                                                 "ataddr_string: strdup(nambuf)");
                        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), "%d.%d", atnet, athost);
        else
        else
-               (void)snprintf(nambuf, sizeof(nambuf), "%d.%d", atnet >> 8,
-                   atnet & 0xff);
-       tp->name = savestr(nambuf);
+               (void)snprintf(nambuf, sizeof(nambuf), "%d", atnet);
+       tp->name = strdup(nambuf);
+       if (tp->name == NULL)
+               (*ndo->ndo_error)(ndo, "ataddr_string: strdup(nambuf)");
 
        return (tp->name);
 }
 
 
        return (tp->name);
 }
 
-static struct tok skt2str[] = {
+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 */
@@ -559,11 +655,12 @@ static struct tok skt2str[] = {
 };
 
 static const char *
 };
 
 static const char *
-ddpskt_string(register int skt)
+ddpskt_string(netdissect_options *ndo,
+              int skt)
 {
        static char buf[8];
 
 {
        static char buf[8];
 
-       if (nflag) {
+       if (ndo->ndo_nflag) {
                (void)snprintf(buf, sizeof(buf), "%d", skt);
                return (buf);
        }
                (void)snprintf(buf, sizeof(buf), "%d", skt);
                return (buf);
        }
[mirror] the TCPdump network dissector