Use more the ND_TCHECK_1() macro

[tcpdump] / print-juniper.c

diff --git a/print-juniper.c b/print-juniper.c
index 1560cee554dc7db0cc012b5075364779eb87f7c2..ea6f3f9fe2b31fb3eb040ae993bee1071d3a4bea 100644 (file)
--- a/print-juniper.c
+++ b/print-juniper.c
@@ -30,6 +30,7 @@ __RCSID("NetBSD: print-juniper.c,v 1.3 2007/07/25 06:31:32 dogcow Exp ");
 
 #include <string.h>
 
+#define ND_LONGJMP_FROM_TCHECK
 #include "netdissect.h"
 #include "addrtoname.h"
 #include "extract.h"
@@ -484,6 +485,7 @@ juniper_ggsn_if_print(netdissect_options *ndo,
         uint8_t proto;
 
         ndo->ndo_protocol = "juniper_ggsn";
+        memset(&l2info, 0, sizeof(l2info));
         l2info.pictype = DLT_JUNIPER_GGSN;
         if (juniper_parse_header(ndo, p, h, &l2info) == 0) {
             ndo->ndo_ll_hdr_len += l2info.header_len;
@@ -515,11 +517,6 @@ juniper_ggsn_if_print(netdissect_options *ndo,
         }
 
         ndo->ndo_ll_hdr_len += l2info.header_len;
-        return;
-
-trunc:
-        nd_print_trunc(ndo);
-        ndo->ndo_ll_hdr_len += l2info.header_len;
 }
 #endif
 
@@ -541,6 +538,7 @@ juniper_es_if_print(netdissect_options *ndo,
         const struct juniper_ipsec_header *ih;
 
         ndo->ndo_protocol = "juniper_es";
+        memset(&l2info, 0, sizeof(l2info));
         l2info.pictype = DLT_JUNIPER_ES;
         if (juniper_parse_header(ndo, p, h, &l2info) == 0) {
             ndo->ndo_ll_hdr_len += l2info.header_len;
@@ -597,11 +595,6 @@ juniper_es_if_print(netdissect_options *ndo,
 
         ip_print(ndo, p, l2info.length);
         ndo->ndo_ll_hdr_len += l2info.header_len;
-        return;
-
-trunc:
-        nd_print_trunc(ndo);
-        ndo->ndo_ll_hdr_len += l2info.header_len;
 }
 #endif
 
@@ -620,6 +613,7 @@ juniper_monitor_if_print(netdissect_options *ndo,
         const struct juniper_monitor_header *mh;
 
         ndo->ndo_protocol = "juniper_monitor";
+        memset(&l2info, 0, sizeof(l2info));
         l2info.pictype = DLT_JUNIPER_MONITOR;
         if (juniper_parse_header(ndo, p, h, &l2info) == 0) {
             ndo->ndo_ll_hdr_len += l2info.header_len;
@@ -640,11 +634,6 @@ juniper_monitor_if_print(netdissect_options *ndo,
         ip_heuristic_guess (ndo, p, l2info.length);
 
         ndo->ndo_ll_hdr_len += l2info.header_len;
-        return;
-
-trunc:
-        nd_print_trunc(ndo);
-        ndo->ndo_ll_hdr_len += l2info.header_len;
 }
 #endif
 
@@ -664,6 +653,7 @@ juniper_services_if_print(netdissect_options *ndo,
         const struct juniper_services_header *sh;
 
         ndo->ndo_protocol = "juniper_services";
+        memset(&l2info, 0, sizeof(l2info));
         l2info.pictype = DLT_JUNIPER_SERVICES;
         if (juniper_parse_header(ndo, p, h, &l2info) == 0) {
             ndo->ndo_ll_hdr_len += l2info.header_len;
@@ -685,11 +675,6 @@ juniper_services_if_print(netdissect_options *ndo,
         ip_heuristic_guess (ndo, p, l2info.length);
 
         ndo->ndo_ll_hdr_len += l2info.header_len;
-        return;
-
-trunc:
-        nd_print_trunc(ndo);
-        ndo->ndo_ll_hdr_len += l2info.header_len;
 }
 #endif
 
@@ -701,6 +686,7 @@ juniper_pppoe_if_print(netdissect_options *ndo,
         struct juniper_l2info_t l2info;
 
         ndo->ndo_protocol = "juniper_pppoe";
+        memset(&l2info, 0, sizeof(l2info));
         l2info.pictype = DLT_JUNIPER_PPPOE;
         if (juniper_parse_header(ndo, p, h, &l2info) == 0) {
             ndo->ndo_ll_hdr_len += l2info.header_len;
@@ -722,6 +708,7 @@ juniper_ether_if_print(netdissect_options *ndo,
         struct juniper_l2info_t l2info;
 
         ndo->ndo_protocol = "juniper_ether";
+        memset(&l2info, 0, sizeof(l2info));
         l2info.pictype = DLT_JUNIPER_ETHER;
         if (juniper_parse_header(ndo, p, h, &l2info) == 0) {
             ndo->ndo_ll_hdr_len += l2info.header_len;
@@ -744,6 +731,7 @@ juniper_ppp_if_print(netdissect_options *ndo,
         struct juniper_l2info_t l2info;
 
         ndo->ndo_protocol = "juniper_ppp";
+        memset(&l2info, 0, sizeof(l2info));
         l2info.pictype = DLT_JUNIPER_PPP;
         if (juniper_parse_header(ndo, p, h, &l2info) == 0) {
             ndo->ndo_ll_hdr_len += l2info.header_len;
@@ -765,6 +753,7 @@ juniper_frelay_if_print(netdissect_options *ndo,
         struct juniper_l2info_t l2info;
 
         ndo->ndo_protocol = "juniper_frelay";
+        memset(&l2info, 0, sizeof(l2info));
         l2info.pictype = DLT_JUNIPER_FRELAY;
         if (juniper_parse_header(ndo, p, h, &l2info) == 0) {
             ndo->ndo_ll_hdr_len += l2info.header_len;
@@ -786,6 +775,7 @@ juniper_chdlc_if_print(netdissect_options *ndo,
         struct juniper_l2info_t l2info;
 
         ndo->ndo_protocol = "juniper_chdlc";
+        memset(&l2info, 0, sizeof(l2info));
         l2info.pictype = DLT_JUNIPER_CHDLC;
         if (juniper_parse_header(ndo, p, h, &l2info) == 0) {
             ndo->ndo_ll_hdr_len += l2info.header_len;
@@ -808,6 +798,7 @@ juniper_pppoe_atm_if_print(netdissect_options *ndo,
         uint16_t extracted_ethertype;
 
         ndo->ndo_protocol = "juniper_pppoe_atm";
+        memset(&l2info, 0, sizeof(l2info));
         l2info.pictype = DLT_JUNIPER_PPPOE_ATM;
         if (juniper_parse_header(ndo, p, h, &l2info) == 0) {
             ndo->ndo_ll_hdr_len += l2info.header_len;
@@ -839,6 +830,7 @@ juniper_mlppp_if_print(netdissect_options *ndo,
         struct juniper_l2info_t l2info;
 
         ndo->ndo_protocol = "juniper_mlppp";
+        memset(&l2info, 0, sizeof(l2info));
         l2info.pictype = DLT_JUNIPER_MLPPP;
         if (juniper_parse_header(ndo, p, h, &l2info) == 0) {
             ndo->ndo_ll_hdr_len += l2info.header_len;
@@ -957,6 +949,8 @@ juniper_mfr_if_print(netdissect_options *ndo,
             ND_PRINT("Bundle-ID %u, ", l2info.bundle);
         switch (l2info.proto) {
         case (LLCSAP_ISONS<<8 | LLCSAP_ISONS):
+            /* At least one byte is required */
+            ND_TCHECK_1(p);
             isoclns_print(ndo, p + 1, l2info.length - 1);
             break;
         case (LLC_UI<<8 | NLPID_Q933):
@@ -981,6 +975,7 @@ juniper_mlfr_if_print(netdissect_options *ndo,
         struct juniper_l2info_t l2info;
 
         ndo->ndo_protocol = "juniper_mlfr";
+        memset(&l2info, 0, sizeof(l2info));
         l2info.pictype = DLT_JUNIPER_MLFR;
         if (juniper_parse_header(ndo, p, h, &l2info) == 0) {
             ndo->ndo_ll_hdr_len += l2info.header_len;
@@ -1030,6 +1025,7 @@ juniper_atm1_if_print(netdissect_options *ndo,
         struct juniper_l2info_t l2info;
 
         ndo->ndo_protocol = "juniper_atm1";
+        memset(&l2info, 0, sizeof(l2info));
         l2info.pictype = DLT_JUNIPER_ATM1;
         if (juniper_parse_header(ndo, p, h, &l2info) == 0) {
             ndo->ndo_ll_hdr_len += l2info.header_len;
@@ -1055,6 +1051,8 @@ juniper_atm1_if_print(netdissect_options *ndo,
         }
 
         if (GET_U_1(p) == 0x03) { /* Cisco style NLPID encaps ? */
+            /* At least one byte is required */
+            ND_TCHECK_1(p);
             isoclns_print(ndo, p + 1, l2info.length - 1);
             /* FIXME check if frame was recognized */
             ndo->ndo_ll_hdr_len += l2info.header_len;
@@ -1088,6 +1086,7 @@ juniper_atm2_if_print(netdissect_options *ndo,
         struct juniper_l2info_t l2info;
 
         ndo->ndo_protocol = "juniper_atm2";
+        memset(&l2info, 0, sizeof(l2info));
         l2info.pictype = DLT_JUNIPER_ATM2;
         if (juniper_parse_header(ndo, p, h, &l2info) == 0) {
             ndo->ndo_ll_hdr_len += l2info.header_len;
@@ -1121,6 +1120,8 @@ juniper_atm2_if_print(netdissect_options *ndo,
         }
 
         if (GET_U_1(p) == 0x03) { /* Cisco style NLPID encaps ? */
+            /* At least one byte is required */
+            ND_TCHECK_1(p);
             isoclns_print(ndo, p + 1, l2info.length - 1);
             /* FIXME check if frame was recognized */
             ndo->ndo_ll_hdr_len += l2info.header_len;
@@ -1584,7 +1585,7 @@ juniper_parse_header(netdissect_options *ndo,
         break;
     }
 
-    if (ndo->ndo_eflag > 1)
+    if (ndo->ndo_eflag)
         ND_PRINT("hlen %u, proto 0x%04x, ", l2info->header_len, l2info->proto);
 
     return 1; /* everything went ok so far. continue parsing */