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author | Gleb Smirnoff <glebius@FreeBSD.org> | 2017-01-31 19:17:06 +0000 |
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committer | Gleb Smirnoff <glebius@FreeBSD.org> | 2017-01-31 19:17:06 +0000 |
commit | d79b843cb78484ea27f877f1541055e1a6a5a4d3 (patch) | |
tree | 57b11b7f3aa68244815f4469b548fcab0c5c3e78 /print-atalk.c | |
parent | 1bf4ba1024df1c302debe8156a60a9dfafb149ee (diff) | |
download | src-d79b843cb78484ea27f877f1541055e1a6a5a4d3.tar.gz src-d79b843cb78484ea27f877f1541055e1a6a5a4d3.zip |
Import tcpdump-4.9.0 into dist.
Notes
Notes:
svn path=/vendor/tcpdump/dist/; revision=313024
Diffstat (limited to 'print-atalk.c')
-rw-r--r-- | print-atalk.c | 61 |
1 files changed, 50 insertions, 11 deletions
diff --git a/print-atalk.c b/print-atalk.c index 61405493d0ea..9d7d69d3d790 100644 --- a/print-atalk.c +++ b/print-atalk.c @@ -17,24 +17,23 @@ * 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. */ -#define NETDISSECT_REWORKED +/* \summary: AppleTalk printer */ + #ifdef HAVE_CONFIG_H #include "config.h" #endif -#include <tcpdump-stdinc.h> +#include <netdissect-stdinc.h> #include <stdio.h> #include <string.h> -#include "interface.h" +#include "netdissect.h" #include "addrtoname.h" #include "ethertype.h" -#include "extract.h" /* must come after interface.h */ +#include "extract.h" #include "appletalk.h" static const char tstr[] = "[|atalk]"; @@ -78,7 +77,14 @@ u_int ltalk_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p) { - return (llap_print(ndo, p, h->caplen)); + u_int hdrlen; + + hdrlen = llap_print(ndo, p, h->len); + if (hdrlen == 0) { + /* Cut short by the snapshot length. */ + return (h->caplen); + } + return (hdrlen); } /* @@ -98,6 +104,10 @@ llap_print(netdissect_options *ndo, ND_PRINT((ndo, " [|llap %u]", length)); return (length); } + if (!ND_TTEST2(*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); @@ -109,6 +119,10 @@ llap_print(netdissect_options *ndo, ND_PRINT((ndo, " [|sddp %u]", length)); return (length); } + if (!ND_TTEST2(*bp, ddpSSize)) { + ND_PRINT((ndo, " [|sddp]")); + return (0); /* cut short by the snapshot length */ + } sdp = (const struct atShortDDP *)bp; ND_PRINT((ndo, "%s.%s", ataddr_string(ndo, 0, lp->src), ddpskt_string(ndo, sdp->srcSkt))); @@ -125,6 +139,10 @@ llap_print(netdissect_options *ndo, ND_PRINT((ndo, " [|ddp %u]", length)); return (length); } + if (!ND_TTEST2(*bp, ddpSize)) { + ND_PRINT((ndo, " [|ddp]")); + return (0); /* cut short by the snapshot length */ + } dp = (const struct atDDP *)bp; snet = EXTRACT_16BITS(&dp->srcNet); ND_PRINT((ndo, "%s.%s", ataddr_string(ndo, snet, dp->srcNode), @@ -171,6 +189,10 @@ atalk_print(netdissect_options *ndo, ND_PRINT((ndo, " [|ddp %u]", length)); return; } + if (!ND_TTEST2(*bp, ddpSize)) { + ND_PRINT((ndo, " [|ddp]")); + return; + } dp = (const struct atDDP *)bp; snet = EXTRACT_16BITS(&dp->srcNet); ND_PRINT((ndo, "%s.%s", ataddr_string(ndo, snet, dp->srcNode), @@ -194,6 +216,15 @@ aarp_print(netdissect_options *ndo, ND_PRINT((ndo, "aarp ")); ap = (const struct aarp *)bp; + 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_16BITS(&ap->htype) == 1 && EXTRACT_16BITS(&ap->ptype) == ETHERTYPE_ATALK && ap->halen == 6 && ap->palen == 4 ) @@ -380,7 +411,7 @@ nbp_print(netdissect_options *ndo, register u_char snode, register u_char skt) { register const struct atNBPtuple *tp = - (const struct atNBPtuple *)((u_char *)np + nbpHeaderSize); + (const struct atNBPtuple *)((const u_char *)np + nbpHeaderSize); int i; const u_char *ep; @@ -567,8 +598,11 @@ ataddr_string(netdissect_options *ndo, tp->nxt; tp = tp->nxt) ; tp->addr = i2; - tp->nxt = newhnamemem(); + tp->nxt = newhnamemem(ndo); tp->name = strdup(nambuf); + if (tp->name == NULL) + (*ndo->ndo_error)(ndo, + "ataddr_string: strdup(nambuf)"); } fclose(fp); } @@ -582,20 +616,25 @@ ataddr_string(netdissect_options *ndo, 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); tp->name = strdup(nambuf); + if (tp->name == NULL) + (*ndo->ndo_error)(ndo, + "ataddr_string: strdup(nambuf)"); return (tp->name); } tp->addr = (atnet << 8) | athost; - tp->nxt = newhnamemem(); + tp->nxt = newhnamemem(ndo); if (athost != 255) (void)snprintf(nambuf, sizeof(nambuf), "%d.%d", atnet, athost); else (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); } |