ForCES: Remove 12 more ND_TCHECK calls.

Remove ND_TCHECK_SIZE() immediately before two GET_BE_U_2() calls that
together fully cover a struct forces_tlv.

Ditto before two GET_BE_U_4() calls and a struct forces_ilv.

Remove ND_TCHECK_SIZE() immediately before ilv_valid(), which always
checks that forces_ilv->length is within bounds, which implies that
forces_ilv->type is also within bounds, which means the whole 8-byte
structure is within bounds.

Ditto before GET_BE_U_2() on the length field of a struct forces_tlv.

diff --git a/print-forces.c b/print-forces.c
index 8d398509c161ae1511386ce26b09439aa42ff56c..b95eab7eb1d8034c133cdc2faccb36472d51f52d 100644 (file)
--- a/print-forces.c
+++ b/print-forces.c
@@ -741,7 +741,6 @@ sdatailv_print(netdissect_options *ndo,
 #endif
                char *ib = indent_pr(indent, 1);
                const u_char *tdp = (const u_char *) ILV_DATA(ilv);
-               ND_TCHECK_SIZE(ilv);
                invilv = ilv_valid(ndo, ilv, rlen);
                if (invilv) {
                        ND_PRINT("%s[", ib + 1);
@@ -760,10 +759,6 @@ sdatailv_print(netdissect_options *ndo,
        }
 
        return 0;
-
-trunc:
-       nd_print_trunc(ndo);
-       return -1;
 }
 
 static int
@@ -809,10 +804,8 @@ pkeyitlv_print(netdissect_options *ndo,
        uint16_t type, tll;
        u_int invtlv;
 
-       ND_TCHECK_1(tdp);
        id = GET_BE_U_4(tdp);
        ND_PRINT("%sKeyinfo: Key 0x%x\n", ib, id);
-       ND_TCHECK_SIZE(kdtlv);
        type = GET_BE_U_2(kdtlv->type);
        tll = GET_BE_U_2(kdtlv->length);
        invtlv = tlv_valid(tll, len);
@@ -831,10 +824,6 @@ pkeyitlv_print(netdissect_options *ndo,
        tll = GET_BE_U_2(kdtlv->length);
        dp = (const u_char *) TLV_DATA(kdtlv);
        return fdatatlv_print(ndo, dp, tll, op_msk, indent);
-
-trunc:
-       nd_print_trunc(ndo);
-       return -1;
 }
 
 #define PTH_DESC_SIZE 12
@@ -930,7 +919,6 @@ pdatacnt_print(netdissect_options *ndo,
                u_int aln;
                u_int invtlv;
 
-               ND_TCHECK_SIZE(pdtlv);
                type = GET_BE_U_2(pdtlv->type);
                tlvl = GET_BE_U_2(pdtlv->length);
                invtlv = tlv_valid(tlvl, len);
@@ -1070,7 +1058,6 @@ genoptlv_print(netdissect_options *ndo,
        u_int invtlv;
        char *ib = indent_pr(indent, 0);
 
-       ND_TCHECK_SIZE(pdtlv);
        type = GET_BE_U_2(pdtlv->type);
        tlvl = GET_BE_U_2(pdtlv->length);
        invtlv = tlv_valid(tlvl, len);
@@ -1100,10 +1087,6 @@ genoptlv_print(netdissect_options *ndo,
                ND_PRINT("\t\t\tInvalid ForCES TLV type=%x", type);
                return -1;
        }
-
-trunc:
-       nd_print_trunc(ndo);
-       return -1;
 }
 
 static int
@@ -1119,7 +1102,6 @@ recpdoptlv_print(netdissect_options *ndo,
                char *ib;
                const u_char *dp;
 
-               ND_TCHECK_SIZE(pdtlv);
                tlvl = GET_BE_U_2(pdtlv->length);
                invtlv = tlv_valid(tlvl, len);
                if (invtlv) {
@@ -1154,10 +1136,6 @@ recpdoptlv_print(netdissect_options *ndo,
        }
 
        return 0;
-
-trunc:
-       nd_print_trunc(ndo);
-       return -1;
 }
 
 static int
@@ -1190,7 +1168,6 @@ otlv_print(netdissect_options *ndo,
         * lfbselect_print() has ensured that GET_BE_U_2(otlv->length)
         * >= TLV_HDRL.
         */
-       ND_TCHECK_SIZE(otlv);
        type = GET_BE_U_2(otlv->type);
        tll = GET_BE_U_2(otlv->length) - TLV_HDRL;
        ops = get_forces_optlv_h(type);
@@ -1213,10 +1190,6 @@ otlv_print(netdissect_options *ndo,
                 rc = ops->print(ndo, dp, tll, ops->op_msk, indent + 1);
         }
        return rc;
-
-trunc:
-       nd_print_trunc(ndo);
-       return -1;
 }
 
 #define ASTDLN 4
@@ -1355,7 +1328,6 @@ print_metailv(netdissect_options *ndo,
         * ILV) >= ILV_HDRL.
         */
        rlen = GET_BE_U_4(ilv->length) - ILV_HDRL;
-       ND_TCHECK_SIZE(ilv);
        ND_PRINT("%sMetaID 0x%x length %u\n", ib, GET_BE_U_4(ilv->type),
                  GET_BE_U_4(ilv->length));
        if (ndo->ndo_vflag >= 3) {
@@ -1363,10 +1335,6 @@ print_metailv(netdissect_options *ndo,
                ND_PRINT(" ]\n");
        }
        return 0;
-
-trunc:
-       nd_print_trunc(ndo);
-       return -1;
 }
 
 static int
@@ -1388,7 +1356,6 @@ print_metatlv(netdissect_options *ndo,
        rlen = dlen;
        ND_PRINT("\n%s METADATA length %u\n", ib, rlen);
        while (rlen != 0) {
-               ND_TCHECK_SIZE(ilv);
                invilv = ilv_valid(ndo, ilv, rlen);
                if (invilv) {
                        break;
@@ -1404,10 +1371,6 @@ print_metatlv(netdissect_options *ndo,
        }
 
        return 0;
-
-trunc:
-       nd_print_trunc(ndo);
-       return -1;
 }
 
 
@@ -1459,7 +1422,6 @@ redirect_print(netdissect_options *ndo,
        while (rlen != 0) {
                uint16_t type, tlvl;
 
-               ND_TCHECK_SIZE(tlv);
                type = GET_BE_U_2(tlv->type);
                tlvl = GET_BE_U_2(tlv->length);
                invtlv = tlv_valid(tlvl, rlen);
@@ -1498,10 +1460,6 @@ redirect_print(netdissect_options *ndo,
        }
 
        return 0;
-
-trunc:
-       nd_print_trunc(ndo);
-       return -1;
 }
 
 #define OP_OFF 8
@@ -1552,7 +1510,6 @@ lfbselect_print(netdissect_options *ndo,
        while (rlen != 0) {
                uint16_t type, tlvl;
 
-               ND_TCHECK_SIZE(otlv);
                type = GET_BE_U_2(otlv->type);
                tlvl = GET_BE_U_2(otlv->length);
                invtlv = tlv_valid(tlvl, rlen);
@@ -1633,7 +1590,6 @@ forces_type_print(netdissect_options *ndo,
        while (rlen != 0) {
                uint16_t type, tlvl;
 
-               ND_TCHECK_SIZE(tltlv);
                type = GET_BE_U_2(tltlv->type);
                tlvl = GET_BE_U_2(tltlv->length);
                invtlv = tlv_valid(tlvl, rlen);
@@ -1679,10 +1635,6 @@ forces_type_print(netdissect_options *ndo,
        }
 
        return 0;
-
-trunc:
-       nd_print_trunc(ndo);
-       return -1;
 }
 
 void