]> The Tcpdump Group git mirrors - tcpdump/blobdiff - print-atalk.c
OpenFlow: Have a function for each message type.
[tcpdump] / print-atalk.c
index 278495f83bb4b2c3bb42d6a48ab004d2c9293d09..c921dc1a7d166cfc5d278fa459c791eb16af3918 100644 (file)
@@ -51,9 +51,9 @@ struct aarp {
        nd_uint16_t     htype, ptype;
        nd_uint8_t      halen, palen;
        nd_uint16_t     op;
-       uint8_t         hsaddr[6];
+       uint8_t         hsaddr[MAC_ADDR_LEN];
        uint8_t         psaddr[4];
-       uint8_t         hdaddr[6];
+       uint8_t         hdaddr[MAC_ADDR_LEN];
        uint8_t         pdaddr[4];
 };
 
@@ -72,19 +72,20 @@ static const char *ddpskt_string(netdissect_options *, u_int);
 /*
  * Print LLAP packets received on a physical LocalTalk interface.
  */
-u_int
+void
 ltalk_if_print(netdissect_options *ndo,
                const struct pcap_pkthdr *h, const u_char *p)
 {
        u_int hdrlen;
 
-       ndo->ndo_protocol = "ltalk_if";
+       ndo->ndo_protocol = "ltalk";
        hdrlen = llap_print(ndo, p, h->len);
        if (hdrlen == 0) {
                /* Cut short by the snapshot length. */
-               return (h->caplen);
+               ndo->ndo_ll_hdr_len += h->caplen;
+               return;
        }
-       return (hdrlen);
+       ndo->ndo_ll_hdr_len += hdrlen;
 }
 
 /*
@@ -106,14 +107,14 @@ llap_print(netdissect_options *ndo,
                return (length);
        }
        if (!ND_TTEST_LEN(bp, sizeof(*lp))) {
-               ND_PRINT(" [|llap]");
+               nd_print_trunc(ndo);
                return (0);     /* cut short by the snapshot length */
        }
        lp = (const struct LAP *)bp;
        bp += sizeof(*lp);
        length -= sizeof(*lp);
        hdrlen = sizeof(*lp);
-       switch (EXTRACT_U_1(lp->type)) {
+       switch (GET_U_1(lp->type)) {
 
        case lapShortDDP:
                if (length < ddpSSize) {
@@ -126,13 +127,16 @@ llap_print(netdissect_options *ndo,
                }
                sdp = (const struct atShortDDP *)bp;
                ND_PRINT("%s.%s",
-                   ataddr_string(ndo, 0, EXTRACT_U_1(lp->src)), ddpskt_string(ndo, EXTRACT_U_1(sdp->srcSkt)));
+                   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, EXTRACT_U_1(lp->dst)), ddpskt_string(ndo, EXTRACT_U_1(sdp->dstSkt)));
+                   ataddr_string(ndo, 0, GET_U_1(lp->dst)),
+                   ddpskt_string(ndo, GET_U_1(sdp->dstSkt)));
                bp += ddpSSize;
                length -= ddpSSize;
                hdrlen += ddpSSize;
-               ddp_print(ndo, bp, length, EXTRACT_U_1(sdp->type), 0, EXTRACT_U_1(lp->src), EXTRACT_U_1(sdp->srcSkt));
+               ddp_print(ndo, bp, length, GET_U_1(sdp->type), 0,
+                         GET_U_1(lp->src), GET_U_1(sdp->srcSkt));
                break;
 
        case lapDDP:
@@ -145,16 +149,18 @@ llap_print(netdissect_options *ndo,
                        return (0);     /* cut short by the snapshot length */
                }
                dp = (const struct atDDP *)bp;
-               snet = EXTRACT_BE_U_2(dp->srcNet);
-               ND_PRINT("%s.%s", ataddr_string(ndo, snet, EXTRACT_U_1(dp->srcNode)),
-                   ddpskt_string(ndo, EXTRACT_U_1(dp->srcSkt)));
+               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, EXTRACT_BE_U_2(dp->dstNet), EXTRACT_U_1(dp->dstNode)),
-                   ddpskt_string(ndo, EXTRACT_U_1(dp->dstSkt)));
+                   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;
                hdrlen += ddpSize;
-               ddp_print(ndo, bp, length, EXTRACT_U_1(dp->type), snet, EXTRACT_U_1(dp->srcNode), EXTRACT_U_1(dp->srcSkt));
+               ddp_print(ndo, bp, length, GET_U_1(dp->type), snet,
+                         GET_U_1(dp->srcNode), GET_U_1(dp->srcSkt));
                break;
 
 #ifdef notdef
@@ -165,7 +171,8 @@ llap_print(netdissect_options *ndo,
 
        default:
                ND_PRINT("%u > %u at-lap#%u %u",
-                   EXTRACT_U_1(lp->src), EXTRACT_U_1(lp->dst), EXTRACT_U_1(lp->type), length);
+                   GET_U_1(lp->src), GET_U_1(lp->dst), GET_U_1(lp->type),
+                   length);
                break;
        }
        return (hdrlen);
@@ -196,15 +203,16 @@ atalk_print(netdissect_options *ndo,
                return;
        }
        dp = (const struct atDDP *)bp;
-       snet = EXTRACT_BE_U_2(dp->srcNet);
-       ND_PRINT("%s.%s", ataddr_string(ndo, snet, EXTRACT_U_1(dp->srcNode)),
-              ddpskt_string(ndo, EXTRACT_U_1(dp->srcSkt)));
+       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, EXTRACT_BE_U_2(dp->dstNet), EXTRACT_U_1(dp->dstNode)),
-              ddpskt_string(ndo, EXTRACT_U_1(dp->dstSkt)));
+              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, EXTRACT_U_1(dp->type), snet, EXTRACT_U_1(dp->srcNode), EXTRACT_U_1(dp->srcSkt));
+       ddp_print(ndo, bp, length, GET_U_1(dp->type), snet,
+                 GET_U_1(dp->srcNode), GET_U_1(dp->srcSkt));
 }
 
 /* XXX should probably pass in the snap header and do checks like arp_print() */
@@ -221,24 +229,24 @@ aarp_print(netdissect_options *ndo,
        ap = (const struct aarp *)bp;
        if (!ND_TTEST_SIZE(ap)) {
                /* Just bail if we don't have the whole chunk. */
-               ND_PRINT(" [|aarp]");
+               nd_print_trunc(ndo);
                return;
        }
        if (length < sizeof(*ap)) {
                ND_PRINT(" [|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)) {
+       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 */
                        ND_PRINT("who-has %s tell %s", AT(pdaddr), AT(psaddr));
                        return;
 
                case 2:                         /* response */
-                       ND_PRINT("reply %s is-at %s", AT(psaddr), etheraddr_string(ndo, ap->hsaddr));
+                       ND_PRINT("reply %s is-at %s", AT(psaddr), GET_ETHERADDR_STRING(ap->hsaddr));
                        return;
 
                case 3:                         /* probe (oy!) */
@@ -246,8 +254,8 @@ aarp_print(netdissect_options *ndo,
                        return;
                }
        ND_PRINT("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));
+           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));
 }
 
 /*
@@ -296,15 +304,15 @@ atp_print(netdissect_options *ndo,
                return;
        }
        length -= sizeof(*ap);
-       control = EXTRACT_U_1(ap->control);
+       control = GET_U_1(ap->control);
        switch (control & 0xc0) {
 
        case atpReqCode:
                ND_PRINT(" atp-req%s %u",
                             control & atpXO? " " : "*",
-                            EXTRACT_BE_U_2(ap->transID));
+                            GET_BE_U_2(ap->transID));
 
-               atp_bitmap_print(ndo, EXTRACT_U_1(ap->bitmap));
+               atp_bitmap_print(ndo, GET_U_1(ap->bitmap));
 
                if (length != 0)
                        ND_PRINT(" [len=%u]", length);
@@ -325,7 +333,8 @@ atp_print(netdissect_options *ndo,
        case atpRspCode:
                ND_PRINT(" atp-resp%s%u:%u (%u)",
                             control & atpEOM? "*" : " ",
-                            EXTRACT_BE_U_2(ap->transID), EXTRACT_U_1(ap->bitmap), length);
+                            GET_BE_U_2(ap->transID), GET_U_1(ap->bitmap),
+                            length);
                switch (control & (atpXO|atpSTS)) {
                case atpXO:
                        ND_PRINT(" [XO]");
@@ -340,9 +349,9 @@ atp_print(netdissect_options *ndo,
                break;
 
        case atpRelCode:
-               ND_PRINT(" atp-rel  %u", EXTRACT_BE_U_2(ap->transID));
+               ND_PRINT(" atp-rel  %u", GET_BE_U_2(ap->transID));
 
-               atp_bitmap_print(ndo, EXTRACT_U_1(ap->bitmap));
+               atp_bitmap_print(ndo, GET_U_1(ap->bitmap));
 
                /* length should be zero */
                if (length)
@@ -368,10 +377,10 @@ atp_print(netdissect_options *ndo,
 
        default:
                ND_PRINT(" atp-0x%x  %u (%u)", control,
-                            EXTRACT_BE_U_2(ap->transID), length);
+                            GET_BE_U_2(ap->transID), length);
                break;
        }
-       data = EXTRACT_BE_U_4(ap->userData);
+       data = GET_BE_U_4(ap->userData);
        if (data != 0)
                ND_PRINT(" 0x%x", data);
 }
@@ -435,12 +444,13 @@ nbp_print(netdissect_options *ndo,
                nd_print_trunc(ndo);
                return;
        }
-       control = EXTRACT_U_1(np->control);
+       control = GET_U_1(np->control);
        switch (i = (control & 0xf0)) {
 
        case nbpBrRq:
        case nbpLkUp:
-               ND_PRINT(i == nbpLkUp? " nbp-lkup %u:":" nbp-brRq %u:", EXTRACT_U_1(np->id));
+               ND_PRINT(i == nbpLkUp? " nbp-lkup %u:":" nbp-brRq %u:",
+                        GET_U_1(np->id));
                if ((const u_char *)(tp + 1) > ep) {
                        nd_print_trunc(ndo);
                        return;
@@ -453,19 +463,19 @@ nbp_print(netdissect_options *ndo,
                 */
                if ((control & 0xf) != 1)
                        ND_PRINT(" [ntup=%u]", control & 0xf);
-               if (EXTRACT_U_1(tp->enumerator))
-                       ND_PRINT(" [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)
+               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, EXTRACT_BE_U_2(tp->net),
-                                         EXTRACT_U_1(tp->node)),
-                           EXTRACT_U_1(tp->skt));
+                           ataddr_string(ndo, GET_BE_U_2(tp->net),
+                                         GET_U_1(tp->node)),
+                           GET_U_1(tp->skt));
                break;
 
        case nbpLkUpReply:
-               ND_PRINT(" nbp-reply %u:", EXTRACT_U_1(np->id));
+               ND_PRINT(" nbp-reply %u:", GET_U_1(np->id));
 
                /* print each of the tuples in the reply */
                for (i = control & 0xf; i != 0 && tp; i--)
@@ -473,7 +483,8 @@ nbp_print(netdissect_options *ndo,
                break;
 
        default:
-               ND_PRINT(" nbp-0x%x  %u (%u)", control, EXTRACT_U_1(np->id), length);
+               ND_PRINT(" nbp-0x%x  %u (%u)", control, GET_U_1(np->id),
+                        length);
                break;
        }
 }
@@ -489,7 +500,7 @@ print_cstring(netdissect_options *ndo,
                nd_print_trunc(ndo);
                return (0);
        }
-       length = EXTRACT_U_1(cp);
+       length = GET_U_1(cp);
        cp++;
 
        /* Spec says string can be at most 32 bytes long */
@@ -502,7 +513,7 @@ print_cstring(netdissect_options *ndo,
                        nd_print_trunc(ndo);
                        return (0);
                }
-               fn_print_char(ndo, EXTRACT_U_1(cp));
+               fn_print_char(ndo, GET_U_1(cp));
                cp++;
                length--;
        }
@@ -523,18 +534,18 @@ nbp_tuple_print(netdissect_options *ndo,
        tpn = nbp_name_print(ndo, tp, ep);
 
        /* if the enumerator isn't 1, print it */
-       if (EXTRACT_U_1(tp->enumerator) != 1)
-               ND_PRINT("(%u)", EXTRACT_U_1(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 (EXTRACT_U_1(tp->skt) != skt)
-               ND_PRINT(" %u", EXTRACT_U_1(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 (EXTRACT_BE_U_2(tp->net) != snet ||
-           EXTRACT_U_1(tp->node) != snode)
+       if (GET_BE_U_2(tp->net) != snet ||
+           GET_U_1(tp->node) != snode)
                ND_PRINT(" [addr=%s]",
-                   ataddr_string(ndo, EXTRACT_BE_U_2(tp->net), EXTRACT_U_1(tp->node)));
+                   ataddr_string(ndo, GET_BE_U_2(tp->net), GET_U_1(tp->node)));
 
        return (tpn);
 }
@@ -584,39 +595,57 @@ ataddr_string(netdissect_options *ndo,
        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, !ndo->ndo_nflag)
-           && (fp = fopen("/etc/atalk.names", "r"))) {
-               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,
-                                       "ataddr_string: strdup(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);
@@ -627,25 +656,25 @@ ataddr_string(netdissect_options *ndo,
                if (tp2->addr == i) {
                        tp->addr = (atnet << 8) | athost;
                        tp->nxt = newhnamemem(ndo);
-                       (void)nd_snprintf(nambuf, sizeof(nambuf), "%s.%u",
+                       (void)snprintf(nambuf, sizeof(nambuf), "%s.%u",
                            tp2->name, athost);
                        tp->name = strdup(nambuf);
                        if (tp->name == NULL)
                                (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC,
-                                       "ataddr_string: strdup(nambuf)");
+                                       "%s: strdup(nambuf)", __func__);
                        return (tp->name);
                }
 
        tp->addr = (atnet << 8) | athost;
        tp->nxt = newhnamemem(ndo);
        if (athost != 255)
-               (void)nd_snprintf(nambuf, sizeof(nambuf), "%u.%u", atnet, athost);
+               (void)snprintf(nambuf, sizeof(nambuf), "%u.%u", atnet, athost);
        else
-               (void)nd_snprintf(nambuf, sizeof(nambuf), "%u", atnet);
+               (void)snprintf(nambuf, sizeof(nambuf), "%u", atnet);
        tp->name = strdup(nambuf);
        if (tp->name == NULL)
                (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC,
-                                 "ataddr_string: strdup(nambuf)");
+                                 "%s: strdup(nambuf)", __func__);
 
        return (tp->name);
 }
@@ -665,7 +694,7 @@ ddpskt_string(netdissect_options *ndo,
        static char buf[8];
 
        if (ndo->ndo_nflag) {
-               (void)nd_snprintf(buf, sizeof(buf), "%u", skt);
+               (void)snprintf(buf, sizeof(buf), "%u", skt);
                return (buf);
        }
        return (tok2str(skt2str, "%u", skt));