]> The Tcpdump Group git mirrors - tcpdump/blobdiff - print-snmp.c
CHANGES: Add/move change(s) backported to 4.99
[tcpdump] / print-snmp.c
index 0c90132b5d2d74e5fd9326987ea86af4336e449e..76f0bbacaf0b4871670f6d000475c1c43a44e6de 100644 (file)
 
 /* \summary: Simple Network Management Protocol (SNMP) printer */
 
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+#include <config.h>
 
-#include <netdissect-stdinc.h>
+#include "netdissect-stdinc.h"
 
 #include <stdio.h>
 #include <string.h>
+#include <limits.h>
 
 #ifdef USE_LIBSMI
 #include <smi.h>
 #endif
 
+#include "netdissect-ctype.h"
+
 #include "netdissect.h"
 #include "extract.h"
 
 #undef OPAQUE  /* defined in <wingdi.h> */
 
-static const char tstr[] = "[|snmp]";
 
 /*
  * Universal ASN.1 types
@@ -332,10 +332,10 @@ static const struct obj_abrev {
                } while ((objp = objp->next) != NULL); \
        } \
        if (objp) { \
-               ND_PRINT((ndo, suppressdot?"%s":".%s", objp->desc)); \
+               ND_PRINT(suppressdot?"%s":".%s", objp->desc); \
                objp = objp->child; \
        } else \
-               ND_PRINT((ndo, suppressdot?"%u":".%u", (o))); \
+               ND_PRINT(suppressdot?"%u":".%u", (o)); \
 }
 
 /*
@@ -418,18 +418,17 @@ static const char *SnmpVersion[] = {
  */
 static int
 asn1_parse(netdissect_options *ndo,
-           register const u_char *p, u_int len, struct be *elem)
+           const u_char *p, u_int len, struct be *elem)
 {
        u_char form, class, id;
-       int i, hdr;
+       u_int i, hdr;
 
        elem->asnlen = 0;
        elem->type = BE_ANY;
        if (len < 1) {
-               ND_PRINT((ndo, "[nothing to parse]"));
+               ND_PRINT("[nothing to parse]");
                return -1;
        }
-       ND_TCHECK_1(p);
 
        /*
         * it would be nice to use a bit field, but you can't depend on them.
@@ -438,14 +437,14 @@ asn1_parse(netdissect_options *ndo,
         *  +---+---+---+---+---+---+---+---+
         *    7   6   5   4   3   2   1   0
         */
-       id = EXTRACT_U_1(p) & ASN_ID_BITS;              /* lower 5 bits, range 00-1f */
+       id = GET_U_1(p) & ASN_ID_BITS;          /* lower 5 bits, range 00-1f */
 #ifdef notdef
-       form = (EXTRACT_U_1(p) & 0xe0) >> 5;    /* move upper 3 bits to lower 3 */
+       form = (GET_U_1(p) & 0xe0) >> 5;        /* move upper 3 bits to lower 3 */
        class = form >> 1;              /* bits 7&6 -> bits 1&0, range 0-3 */
        form &= 0x1;                    /* bit 5 -> bit 0, range 0-1 */
 #else
-       form = (u_char)(*p & ASN_FORM_BITS) >> ASN_FORM_SHIFT;
-       class = (u_char)(*p & ASN_CLASS_BITS) >> ASN_CLASS_SHIFT;
+       form = (u_char)(GET_U_1(p) & ASN_FORM_BITS) >> ASN_FORM_SHIFT;
+       class = (u_char)(GET_U_1(p) & ASN_CLASS_BITS) >> ASN_CLASS_SHIFT;
 #endif
        elem->form = form;
        elem->class = class;
@@ -464,65 +463,61 @@ asn1_parse(netdissect_options *ndo,
                 * that won't fit in 32 bits.
                 */
                id = 0;
-               ND_TCHECK_1(p);
-               while (EXTRACT_U_1(p) & ASN_BIT8) {
+               while (GET_U_1(p) & ASN_BIT8) {
                        if (len < 1) {
-                               ND_PRINT((ndo, "[Xtagfield?]"));
+                               ND_PRINT("[Xtagfield?]");
                                return -1;
                        }
-                       id = (id << 7) | (*p & ~ASN_BIT8);
+                       id = (id << 7) | (GET_U_1(p) & ~ASN_BIT8);
                        len--;
                        hdr++;
                        p++;
-                       ND_TCHECK_1(p);
                }
                if (len < 1) {
-                       ND_PRINT((ndo, "[Xtagfield?]"));
+                       ND_PRINT("[Xtagfield?]");
                        return -1;
                }
-               ND_TCHECK_1(p);
-               elem->id = id = (id << 7) | EXTRACT_U_1(p);
+               elem->id = id = (id << 7) | GET_U_1(p);
                --len;
                ++hdr;
                ++p;
        }
        if (len < 1) {
-               ND_PRINT((ndo, "[no asnlen]"));
+               ND_PRINT("[no asnlen]");
                return -1;
        }
-       ND_TCHECK_1(p);
-       elem->asnlen = *p;
+       elem->asnlen = GET_U_1(p);
        p++; len--; hdr++;
        if (elem->asnlen & ASN_BIT8) {
                uint32_t noct = elem->asnlen % ASN_BIT8;
                elem->asnlen = 0;
                if (len < noct) {
-                       ND_PRINT((ndo, "[asnlen? %d<%d]", len, noct));
+                       ND_PRINT("[asnlen? %d<%d]", len, noct);
                        return -1;
                }
-               ND_TCHECK2(*p, noct);
-               for (; noct-- > 0; len--, hdr++) {
-                       elem->asnlen = (elem->asnlen << ASN_SHIFT8) | EXTRACT_U_1(p);
+               ND_TCHECK_LEN(p, noct);
+               for (; noct != 0; len--, hdr++, noct--) {
+                       elem->asnlen = (elem->asnlen << ASN_SHIFT8) | GET_U_1(p);
                        p++;
                }
        }
        if (len < elem->asnlen) {
-               ND_PRINT((ndo, "[len%d<asnlen%u]", len, elem->asnlen));
+               ND_PRINT("[len%d<asnlen%u]", len, elem->asnlen);
                return -1;
        }
        if (form >= sizeof(Form)/sizeof(Form[0])) {
-               ND_PRINT((ndo, "[form?%d]", form));
+               ND_PRINT("[form?%d]", form);
                return -1;
        }
        if (class >= sizeof(Class)/sizeof(Class[0])) {
-               ND_PRINT((ndo, "[class?%c/%d]", *Form[form], class));
+               ND_PRINT("[class?%c/%d]", *Form[form], class);
                return -1;
        }
        if ((int)id >= Class[class].numIDs) {
-               ND_PRINT((ndo, "[id?%c/%s/%d]", *Form[form], Class[class].name, id));
+               ND_PRINT("[id?%c/%s/%d]", *Form[form], Class[class].name, id);
                return -1;
        }
-       ND_TCHECK2(*p, elem->asnlen);
+       ND_TCHECK_LEN(p, elem->asnlen);
 
        switch (form) {
        case PRIMITIVE:
@@ -535,18 +530,18 @@ asn1_parse(netdissect_options *ndo,
                                break;
 
                        case INTEGER: {
-                               register int32_t data;
+                               uint32_t data;
                                elem->type = BE_INT;
                                data = 0;
 
                                if (elem->asnlen == 0) {
-                                       ND_PRINT((ndo, "[asnlen=0]"));
+                                       ND_PRINT("[asnlen=0]");
                                        return -1;
                                }
-                               if (*p & ASN_BIT8)      /* negative */
-                                       data = -1;
-                               for (i = elem->asnlen; i-- > 0; p++)
-                                       data = (data << ASN_SHIFT8) | EXTRACT_U_1(p);
+                               if (GET_U_1(p) & ASN_BIT8)      /* negative */
+                                       data = UINT_MAX;
+                               for (i = elem->asnlen; i != 0; p++, i--)
+                                       data = (data << ASN_SHIFT8) | GET_U_1(p);
                                elem->data.integer = data;
                                break;
                        }
@@ -564,7 +559,7 @@ asn1_parse(netdissect_options *ndo,
                        default:
                                elem->type = BE_OCTET;
                                elem->data.raw = (const uint8_t *)p;
-                               ND_PRINT((ndo, "[P/U/%s]", Class[class].Id[id]));
+                               ND_PRINT("[P/U/%s]", Class[class].Id[id]);
                                break;
                        }
                        break;
@@ -579,21 +574,21 @@ asn1_parse(netdissect_options *ndo,
                        case COUNTER:
                        case GAUGE:
                        case TIMETICKS: {
-                               register uint32_t data;
+                               uint32_t data;
                                elem->type = BE_UNS;
                                data = 0;
-                               for (i = elem->asnlen; i-- > 0; p++)
-                                       data = (data << 8) + EXTRACT_U_1(p);
+                               for (i = elem->asnlen; i != 0; p++, i--)
+                                       data = (data << 8) + GET_U_1(p);
                                elem->data.uns = data;
                                break;
                        }
 
                        case COUNTER64: {
-                               register uint64_t data64;
+                               uint64_t data64;
                                elem->type = BE_UNS64;
                                data64 = 0;
-                               for (i = elem->asnlen; i-- > 0; p++)
-                                       data64 = (data64 << 8) + EXTRACT_U_1(p);
+                               for (i = elem->asnlen; i != 0; p++, i--)
+                                       data64 = (data64 << 8) + GET_U_1(p);
                                elem->data.uns64 = data64;
                                break;
                        }
@@ -601,8 +596,8 @@ asn1_parse(netdissect_options *ndo,
                        default:
                                elem->type = BE_OCTET;
                                elem->data.raw = (const uint8_t *)p;
-                               ND_PRINT((ndo, "[P/A/%s]",
-                                       Class[class].Id[id]));
+                               ND_PRINT("[P/A/%s]",
+                                       Class[class].Id[id]);
                                break;
                        }
                        break;
@@ -627,7 +622,7 @@ asn1_parse(netdissect_options *ndo,
                        break;
 
                default:
-                       ND_PRINT((ndo, "[P/%s/%s]", Class[class].name, Class[class].Id[id]));
+                       ND_PRINT("[P/%s/%s]", Class[class].name, Class[class].Id[id]);
                        elem->type = BE_OCTET;
                        elem->data.raw = (const uint8_t *)p;
                        break;
@@ -646,7 +641,7 @@ asn1_parse(netdissect_options *ndo,
                        default:
                                elem->type = BE_OCTET;
                                elem->data.raw = (const uint8_t *)p;
-                               ND_PRINT((ndo, "C/U/%s", Class[class].Id[id]));
+                               ND_PRINT("C/U/%s", Class[class].Id[id]);
                                break;
                        }
                        break;
@@ -659,7 +654,7 @@ asn1_parse(netdissect_options *ndo,
                default:
                        elem->type = BE_OCTET;
                        elem->data.raw = (const uint8_t *)p;
-                       ND_PRINT((ndo, "C/%s/%s", Class[class].name, Class[class].Id[id]));
+                       ND_PRINT("C/%s/%s", Class[class].name, Class[class].Id[id]);
                        break;
                }
                break;
@@ -669,7 +664,7 @@ asn1_parse(netdissect_options *ndo,
        return elem->asnlen + hdr;
 
 trunc:
-       ND_PRINT((ndo, "%s", tstr));
+       nd_print_trunc(ndo);
        return -1;
 }
 
@@ -680,46 +675,46 @@ asn1_print_octets(netdissect_options *ndo, struct be *elem)
        uint32_t asnlen = elem->asnlen;
        uint32_t i;
 
-       ND_TCHECK2(*p, asnlen);
-       for (i = asnlen; i-- > 0; p++)
-               ND_PRINT((ndo, "_%.2x", EXTRACT_U_1(p)));
+       ND_TCHECK_LEN(p, asnlen);
+       for (i = asnlen; i != 0; p++, i--)
+               ND_PRINT("_%.2x", GET_U_1(p));
        return 0;
 
 trunc:
-       ND_PRINT((ndo, "%s", tstr));
+       nd_print_trunc(ndo);
        return -1;
 }
 
 static int
 asn1_print_string(netdissect_options *ndo, struct be *elem)
 {
-       register int printable = 1, first = 1;
+       int printable = 1, first = 1;
        const u_char *p;
        uint32_t asnlen = elem->asnlen;
        uint32_t i;
 
        p = elem->data.str;
-       ND_TCHECK2(*p, asnlen);
-       for (i = asnlen; printable && i-- > 0; p++)
-               printable = ND_ISPRINT(EXTRACT_U_1(p));
+       ND_TCHECK_LEN(p, asnlen);
+       for (i = asnlen; printable && i != 0; p++, i--)
+               printable = ND_ASCII_ISPRINT(GET_U_1(p));
        p = elem->data.str;
        if (printable) {
-               ND_PRINT((ndo, "\""));
-               if (fn_printn(ndo, p, asnlen, ndo->ndo_snapend)) {
-                       ND_PRINT((ndo, "\""));
+               ND_PRINT("\"");
+               if (nd_printn(ndo, p, asnlen, ndo->ndo_snapend)) {
+                       ND_PRINT("\"");
                        goto trunc;
                }
-               ND_PRINT((ndo, "\""));
+               ND_PRINT("\"");
        } else {
-               for (i = asnlen; i-- > 0; p++) {
-                       ND_PRINT((ndo, first ? "%.2x" : "_%.2x", EXTRACT_U_1(p)));
+               for (i = asnlen; i != 0; p++, i--) {
+                       ND_PRINT(first ? "%.2x" : "_%.2x", GET_U_1(p));
                        first = 0;
                }
        }
        return 0;
 
 trunc:
-       ND_PRINT((ndo, "%s", tstr));
+       nd_print_trunc(ndo);
        return -1;
 }
 
@@ -747,7 +742,8 @@ asn1_print(netdissect_options *ndo,
                break;
 
        case BE_OID: {
-               int o = 0, first = -1;
+               int first = -1;
+               uint32_t o = 0;
 
                p = (const u_char *)elem->data.raw;
                i = asnlen;
@@ -756,23 +752,22 @@ asn1_print(netdissect_options *ndo,
                        for (; a->node; a++) {
                                if (i < a->oid_len)
                                        continue;
-                               if (!ND_TTEST2(*p, a->oid_len))
+                               if (!ND_TTEST_LEN(p, a->oid_len))
                                        continue;
                                if (memcmp(a->oid, p, a->oid_len) == 0) {
                                        objp = a->node->child;
                                        i -= a->oid_len;
                                        p += a->oid_len;
-                                       ND_PRINT((ndo, "%s", a->prefix));
+                                       ND_PRINT("%s", a->prefix);
                                        first = 1;
                                        break;
                                }
                        }
                }
 
-               for (; i-- > 0; p++) {
-                       ND_TCHECK_1(p);
-                       o = (o << ASN_SHIFT7) + (*p & ~ASN_BIT8);
-                       if (*p & ASN_LONGLEN)
+               for (; i != 0; p++, i--) {
+                       o = (o << ASN_SHIFT7) + (GET_U_1(p) & ~ASN_BIT8);
+                       if (GET_U_1(p) & ASN_LONGLEN)
                                continue;
 
                        /*
@@ -799,15 +794,15 @@ asn1_print(netdissect_options *ndo,
        }
 
        case BE_INT:
-               ND_PRINT((ndo, "%d", elem->data.integer));
+               ND_PRINT("%d", elem->data.integer);
                break;
 
        case BE_UNS:
-               ND_PRINT((ndo, "%u", elem->data.uns));
+               ND_PRINT("%u", elem->data.uns);
                break;
 
        case BE_UNS64:
-               ND_PRINT((ndo, "%" PRIu64, elem->data.uns64));
+               ND_PRINT("%" PRIu64, elem->data.uns64);
                break;
 
        case BE_STR:
@@ -816,41 +811,41 @@ asn1_print(netdissect_options *ndo,
                break;
 
        case BE_SEQ:
-               ND_PRINT((ndo, "Seq(%u)", elem->asnlen));
+               ND_PRINT("Seq(%u)", elem->asnlen);
                break;
 
        case BE_INETADDR:
                if (asnlen != ASNLEN_INETADDR)
-                       ND_PRINT((ndo, "[inetaddr len!=%d]", ASNLEN_INETADDR));
+                       ND_PRINT("[inetaddr len!=%d]", ASNLEN_INETADDR);
                p = (const u_char *)elem->data.raw;
-               ND_TCHECK2(*p, asnlen);
-               for (i = asnlen; i-- != 0; p++) {
-                       ND_PRINT((ndo, (i == asnlen-1) ? "%u" : ".%u", EXTRACT_U_1(p)));
+               ND_TCHECK_LEN(p, asnlen);
+               for (i = asnlen; i != 0; p++, i--) {
+                       ND_PRINT((i == asnlen) ? "%u" : ".%u", GET_U_1(p));
                }
                break;
 
        case BE_NOSUCHOBJECT:
        case BE_NOSUCHINST:
        case BE_ENDOFMIBVIEW:
-               ND_PRINT((ndo, "[%s]", Class[EXCEPTIONS].Id[elem->id]));
+               ND_PRINT("[%s]", Class[EXCEPTIONS].Id[elem->id]);
                break;
 
        case BE_PDU:
-               ND_PRINT((ndo, "%s(%u)", Class[CONTEXT].Id[elem->id], elem->asnlen));
+               ND_PRINT("%s(%u)", Class[CONTEXT].Id[elem->id], elem->asnlen);
                break;
 
        case BE_ANY:
-               ND_PRINT((ndo, "[BE_ANY!?]"));
+               ND_PRINT("[BE_ANY!?]");
                break;
 
        default:
-               ND_PRINT((ndo, "[be!?]"));
+               ND_PRINT("[be!?]");
                break;
        }
        return 0;
 
 trunc:
-       ND_PRINT((ndo, "%s", tstr));
+       nd_print_trunc(ndo);
        return -1;
 }
 
@@ -873,13 +868,13 @@ asn1_decode(u_char *p, u_int length)
        while (i >= 0 && length > 0) {
                i = asn1_parse(ndo, p, length, &elem);
                if (i >= 0) {
-                       ND_PRINT((ndo, " "));
+                       ND_PRINT(" ");
                        if (asn1_print(ndo, &elem) < 0)
                                return;
                        if (elem.type == BE_SEQ || elem.type == BE_PDU) {
-                               ND_PRINT((ndo, " {"));
+                               ND_PRINT(" {");
                                asn1_decode(elem.data.raw, elem.asnlen);
-                               ND_PRINT((ndo, " }"));
+                               ND_PRINT(" }");
                        }
                        length -= i;
                        p += i;
@@ -918,13 +913,13 @@ smi_decode_oid(netdissect_options *ndo,
 {
        const u_char *p = (const u_char *)elem->data.raw;
        uint32_t asnlen = elem->asnlen;
-       int o = 0, first = -1, i = asnlen;
+       uint32_t i = asnlen;
+       int o = 0, first = -1;
        unsigned int firstval;
 
-       for (*oidlen = 0; i-- > 0; p++) {
-               ND_TCHECK_1(p);
-               o = (o << ASN_SHIFT7) + (*p & ~ASN_BIT8);
-               if (*p & ASN_LONGLEN)
+       for (*oidlen = 0; i != 0; p++, i--) {
+               o = (o << ASN_SHIFT7) + (GET_U_1(p) & ~ASN_BIT8);
+               if (GET_U_1(p) & ASN_LONGLEN)
                    continue;
 
                /*
@@ -932,7 +927,7 @@ smi_decode_oid(netdissect_options *ndo,
                 * (see X.690:1997 clause 8.19 for the details)
                 */
                if (first < 0) {
-                       first = 0;
+                       first = 0;
                        firstval = o / OIDMUX;
                        if (firstval > 2) firstval = 2;
                        o -= firstval * OIDMUX;
@@ -946,10 +941,6 @@ smi_decode_oid(netdissect_options *ndo,
                o = 0;
        }
        return 0;
-
-trunc:
-       ND_PRINT((ndo, "%s", tstr));
-       return -1;
 }
 
 static int smi_check_type(SmiBasetype basetype, int be)
@@ -1064,12 +1055,12 @@ smi_print_variable(netdissect_options *ndo,
                return NULL;
        }
        if (ndo->ndo_vflag) {
-               ND_PRINT((ndo, "%s::", smiGetNodeModule(smiNode)->name));
+               ND_PRINT("%s::", smiGetNodeModule(smiNode)->name);
        }
-       ND_PRINT((ndo, "%s", smiNode->name));
+       ND_PRINT("%s", smiNode->name);
        if (smiNode->oidlen < oidlen) {
                for (i = smiNode->oidlen; i < oidlen; i++) {
-                       ND_PRINT((ndo, ".%u", oid[i]));
+                       ND_PRINT(".%u", oid[i]);
                }
        }
        *status = 0;
@@ -1097,20 +1088,20 @@ smi_print_value(netdissect_options *ndo,
        }
 
        if (NOTIFY_CLASS(pduid) && smiNode->access < SMI_ACCESS_NOTIFY) {
-           ND_PRINT((ndo, "[notNotifyable]"));
+           ND_PRINT("[notNotifiable]");
        }
 
        if (READ_CLASS(pduid) && smiNode->access < SMI_ACCESS_READ_ONLY) {
-           ND_PRINT((ndo, "[notReadable]"));
+           ND_PRINT("[notReadable]");
        }
 
        if (WRITE_CLASS(pduid) && smiNode->access < SMI_ACCESS_READ_WRITE) {
-           ND_PRINT((ndo, "[notWritable]"));
+           ND_PRINT("[notWritable]");
        }
 
        if (RESPONSE_CLASS(pduid)
            && smiNode->access == SMI_ACCESS_NOT_ACCESSIBLE) {
-           ND_PRINT((ndo, "[noAccess]"));
+           ND_PRINT("[noAccess]");
        }
 
        smiType = smiGetNodeType(smiNode);
@@ -1119,11 +1110,11 @@ smi_print_value(netdissect_options *ndo,
        }
 
        if (! smi_check_type(smiType->basetype, elem->type)) {
-           ND_PRINT((ndo, "[wrongType]"));
+           ND_PRINT("[wrongType]");
        }
 
        if (! smi_check_range(smiType, elem)) {
-           ND_PRINT((ndo, "[outOfRange]"));
+           ND_PRINT("[outOfRange]");
        }
 
        /* resolve bits to named bits */
@@ -1146,13 +1137,13 @@ smi_print_value(netdissect_options *ndo,
                                smiNode = smiGetNodeByOID(oidlen, oid);
                                if (smiNode) {
                                        if (ndo->ndo_vflag) {
-                                               ND_PRINT((ndo, "%s::", smiGetNodeModule(smiNode)->name));
+                                               ND_PRINT("%s::", smiGetNodeModule(smiNode)->name);
                                        }
-                                       ND_PRINT((ndo, "%s", smiNode->name));
+                                       ND_PRINT("%s", smiNode->name);
                                        if (smiNode->oidlen < oidlen) {
                                                for (i = smiNode->oidlen;
                                                     i < oidlen; i++) {
-                                                       ND_PRINT((ndo, ".%u", oid[i]));
+                                                       ND_PRINT(".%u", oid[i]);
                                                }
                                        }
                                        done++;
@@ -1168,8 +1159,8 @@ smi_print_value(netdissect_options *ndo,
                             nn = smiGetNextNamedNumber(nn)) {
                                 if (nn->value.value.integer32
                                     == elem->data.integer) {
-                                        ND_PRINT((ndo, "%s", nn->name));
-                                        ND_PRINT((ndo, "(%d)", elem->data.integer));
+                                        ND_PRINT("%s", nn->name);
+                                        ND_PRINT("(%d)", elem->data.integer);
                                         done++;
                                         break;
                                }
@@ -1226,7 +1217,7 @@ varbind_print(netdissect_options *ndo,
               u_short pduid, const u_char *np, u_int length)
 {
        struct be elem;
-       int count = 0, ind;
+       int count = 0;
 #ifdef USE_LIBSMI
        SmiNode *smiNode = NULL;
 #endif
@@ -1236,27 +1227,27 @@ varbind_print(netdissect_options *ndo,
        if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_SEQ) {
-               ND_PRINT((ndo, "[!SEQ of varbind]"));
+               ND_PRINT("[!SEQ of varbind]");
                asn1_print(ndo, &elem);
                return;
        }
        if ((u_int)count < length)
-               ND_PRINT((ndo, "[%d extra after SEQ of varbind]", length - count));
+               ND_PRINT("[%d extra after SEQ of varbind]", length - count);
        /* descend */
        length = elem.asnlen;
        np = (const u_char *)elem.data.raw;
 
-       for (ind = 1; length > 0; ind++) {
+       while (length) {
                const u_char *vbend;
                u_int vblength;
 
-               ND_PRINT((ndo, " "));
+               ND_PRINT(" ");
 
                /* Sequence */
                if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                        return;
                if (elem.type != BE_SEQ) {
-                       ND_PRINT((ndo, "[!varbind]"));
+                       ND_PRINT("[!varbind]");
                        asn1_print(ndo, &elem);
                        return;
                }
@@ -1270,7 +1261,7 @@ varbind_print(netdissect_options *ndo,
                if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                        return;
                if (elem.type != BE_OID) {
-                       ND_PRINT((ndo, "[objName!=OID]"));
+                       ND_PRINT("[objName!=OID]");
                        asn1_print(ndo, &elem);
                        return;
                }
@@ -1286,7 +1277,7 @@ varbind_print(netdissect_options *ndo,
 
                if (pduid != GETREQ && pduid != GETNEXTREQ
                    && pduid != GETBULKREQ)
-                       ND_PRINT((ndo, "="));
+                       ND_PRINT("=");
 
                /* objVal (ANY) */
                if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
@@ -1294,7 +1285,7 @@ varbind_print(netdissect_options *ndo,
                if (pduid == GETREQ || pduid == GETNEXTREQ
                    || pduid == GETBULKREQ) {
                        if (elem.type != BE_NULL) {
-                               ND_PRINT((ndo, "[objVal!=NULL]"));
+                               ND_PRINT("[objVal!=NULL]");
                                if (asn1_print(ndo, &elem) < 0)
                                        return;
                        }
@@ -1329,12 +1320,12 @@ snmppdu_print(netdissect_options *ndo,
        if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_INT) {
-               ND_PRINT((ndo, "[reqId!=INT]"));
+               ND_PRINT("[reqId!=INT]");
                asn1_print(ndo, &elem);
                return;
        }
        if (ndo->ndo_vflag)
-               ND_PRINT((ndo, "R=%d ", elem.data.integer));
+               ND_PRINT("R=%d ", elem.data.integer);
        length -= count;
        np += count;
 
@@ -1342,7 +1333,7 @@ snmppdu_print(netdissect_options *ndo,
        if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_INT) {
-               ND_PRINT((ndo, "[errorStatus!=INT]"));
+               ND_PRINT("[errorStatus!=INT]");
                asn1_print(ndo, &elem);
                return;
        }
@@ -1351,13 +1342,13 @@ snmppdu_print(netdissect_options *ndo,
            || pduid == INFORMREQ || pduid == V2TRAP || pduid == REPORT)
            && elem.data.integer != 0) {
                char errbuf[20];
-               ND_PRINT((ndo, "[errorStatus(%s)!=0]",
-                       DECODE_ErrorStatus(elem.data.integer)));
+               ND_PRINT("[errorStatus(%s)!=0]",
+                       DECODE_ErrorStatus(elem.data.integer));
        } else if (pduid == GETBULKREQ) {
-               ND_PRINT((ndo, " N=%d", elem.data.integer));
+               ND_PRINT(" N=%d", elem.data.integer);
        } else if (elem.data.integer != 0) {
                char errbuf[20];
-               ND_PRINT((ndo, " %s", DECODE_ErrorStatus(elem.data.integer)));
+               ND_PRINT(" %s", DECODE_ErrorStatus(elem.data.integer));
                error_status = elem.data.integer;
        }
        length -= count;
@@ -1367,29 +1358,28 @@ snmppdu_print(netdissect_options *ndo,
        if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_INT) {
-               ND_PRINT((ndo, "[errorIndex!=INT]"));
+               ND_PRINT("[errorIndex!=INT]");
                asn1_print(ndo, &elem);
                return;
        }
        if ((pduid == GETREQ || pduid == GETNEXTREQ || pduid == SETREQ
            || pduid == INFORMREQ || pduid == V2TRAP || pduid == REPORT)
            && elem.data.integer != 0)
-               ND_PRINT((ndo, "[errorIndex(%d)!=0]", elem.data.integer));
+               ND_PRINT("[errorIndex(%d)!=0]", elem.data.integer);
        else if (pduid == GETBULKREQ)
-               ND_PRINT((ndo, " M=%d", elem.data.integer));
+               ND_PRINT(" M=%d", elem.data.integer);
        else if (elem.data.integer != 0) {
                if (!error_status)
-                       ND_PRINT((ndo, "[errorIndex(%d) w/o errorStatus]", elem.data.integer));
+                       ND_PRINT("[errorIndex(%d) w/o errorStatus]", elem.data.integer);
                else
-                       ND_PRINT((ndo, "@%d", elem.data.integer));
+                       ND_PRINT("@%d", elem.data.integer);
        } else if (error_status) {
-               ND_PRINT((ndo, "[errorIndex==0]"));
+               ND_PRINT("[errorIndex==0]");
        }
        length -= count;
        np += count;
 
        varbind_print(ndo, pduid, np, length);
-       return;
 }
 
 /*
@@ -1402,13 +1392,13 @@ trappdu_print(netdissect_options *ndo,
        struct be elem;
        int count = 0, generic;
 
-       ND_PRINT((ndo, " "));
+       ND_PRINT(" ");
 
        /* enterprise (oid) */
        if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_OID) {
-               ND_PRINT((ndo, "[enterprise!=OID]"));
+               ND_PRINT("[enterprise!=OID]");
                asn1_print(ndo, &elem);
                return;
        }
@@ -1417,13 +1407,13 @@ trappdu_print(netdissect_options *ndo,
        length -= count;
        np += count;
 
-       ND_PRINT((ndo, " "));
+       ND_PRINT(" ");
 
        /* agent-addr (inetaddr) */
        if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_INETADDR) {
-               ND_PRINT((ndo, "[agent-addr!=INETADDR]"));
+               ND_PRINT("[agent-addr!=INETADDR]");
                asn1_print(ndo, &elem);
                return;
        }
@@ -1436,14 +1426,14 @@ trappdu_print(netdissect_options *ndo,
        if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_INT) {
-               ND_PRINT((ndo, "[generic-trap!=INT]"));
+               ND_PRINT("[generic-trap!=INT]");
                asn1_print(ndo, &elem);
                return;
        }
        generic = elem.data.integer;
        {
                char buf[20];
-               ND_PRINT((ndo, " %s", DECODE_GenericTrap(generic)));
+               ND_PRINT(" %s", DECODE_GenericTrap(generic));
        }
        length -= count;
        np += count;
@@ -1452,25 +1442,25 @@ trappdu_print(netdissect_options *ndo,
        if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_INT) {
-               ND_PRINT((ndo, "[specific-trap!=INT]"));
+               ND_PRINT("[specific-trap!=INT]");
                asn1_print(ndo, &elem);
                return;
        }
        if (generic != GT_ENTERPRISE) {
                if (elem.data.integer != 0)
-                       ND_PRINT((ndo, "[specific-trap(%d)!=0]", elem.data.integer));
+                       ND_PRINT("[specific-trap(%d)!=0]", elem.data.integer);
        } else
-               ND_PRINT((ndo, " s=%d", elem.data.integer));
+               ND_PRINT(" s=%d", elem.data.integer);
        length -= count;
        np += count;
 
-       ND_PRINT((ndo, " "));
+       ND_PRINT(" ");
 
        /* time-stamp (TimeTicks) */
        if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_UNS) {                      /* XXX */
-               ND_PRINT((ndo, "[time-stamp!=TIMETICKS]"));
+               ND_PRINT("[time-stamp!=TIMETICKS]");
                asn1_print(ndo, &elem);
                return;
        }
@@ -1480,7 +1470,6 @@ trappdu_print(netdissect_options *ndo,
        np += count;
 
        varbind_print(ndo, TRAP, np, length);
-       return;
 }
 
 /*
@@ -1497,17 +1486,17 @@ pdu_print(netdissect_options *ndo,
        if ((count = asn1_parse(ndo, np, length, &pdu)) < 0)
                return;
        if (pdu.type != BE_PDU) {
-               ND_PRINT((ndo, "[no PDU]"));
+               ND_PRINT("[no PDU]");
                return;
        }
        if ((u_int)count < length)
-               ND_PRINT((ndo, "[%d extra after PDU]", length - count));
+               ND_PRINT("[%d extra after PDU]", length - count);
        if (ndo->ndo_vflag) {
-               ND_PRINT((ndo, "{ "));
+               ND_PRINT("{ ");
        }
        if (asn1_print(ndo, &pdu) < 0)
                return;
-       ND_PRINT((ndo, " "));
+       ND_PRINT(" ");
        /* descend into PDU */
        length = pdu.asnlen;
        np = (const u_char *)pdu.data.raw;
@@ -1515,12 +1504,12 @@ pdu_print(netdissect_options *ndo,
        if (version == SNMP_VERSION_1 &&
            (pdu.id == GETBULKREQ || pdu.id == INFORMREQ ||
             pdu.id == V2TRAP || pdu.id == REPORT)) {
-               ND_PRINT((ndo, "[v2 PDU in v1 message]"));
+               ND_PRINT("[v2 PDU in v1 message]");
                return;
        }
 
        if (version == SNMP_VERSION_2 && pdu.id == TRAP) {
-               ND_PRINT((ndo, "[v1 PDU in v2 message]"));
+               ND_PRINT("[v1 PDU in v2 message]");
                return;
        }
 
@@ -1541,7 +1530,7 @@ pdu_print(netdissect_options *ndo,
        }
 
        if (ndo->ndo_vflag) {
-               ND_PRINT((ndo, " } "));
+               ND_PRINT(" } ");
        }
 }
 
@@ -1559,7 +1548,7 @@ scopedpdu_print(netdissect_options *ndo,
        if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_SEQ) {
-               ND_PRINT((ndo, "[!scoped PDU]"));
+               ND_PRINT("[!scoped PDU]");
                asn1_print(ndo, &elem);
                return;
        }
@@ -1570,33 +1559,33 @@ scopedpdu_print(netdissect_options *ndo,
        if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_STR) {
-               ND_PRINT((ndo, "[contextEngineID!=STR]"));
+               ND_PRINT("[contextEngineID!=STR]");
                asn1_print(ndo, &elem);
                return;
        }
        length -= count;
        np += count;
 
-       ND_PRINT((ndo, "E="));
+       ND_PRINT("E=");
        if (asn1_print_octets(ndo, &elem) == -1)
                return;
-       ND_PRINT((ndo, " "));
+       ND_PRINT(" ");
 
        /* contextName (OCTET STRING) */
        if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_STR) {
-               ND_PRINT((ndo, "[contextName!=STR]"));
+               ND_PRINT("[contextName!=STR]");
                asn1_print(ndo, &elem);
                return;
        }
        length -= count;
        np += count;
 
-       ND_PRINT((ndo, "C="));
+       ND_PRINT("C=");
        if (asn1_print_string(ndo, &elem) == -1)
                return;
-       ND_PRINT((ndo, " "));
+       ND_PRINT(" ");
 
        pdu_print(ndo, np, length, version);
 }
@@ -1615,7 +1604,7 @@ community_print(netdissect_options *ndo,
        if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_STR) {
-               ND_PRINT((ndo, "[comm!=STR]"));
+               ND_PRINT("[comm!=STR]");
                asn1_print(ndo, &elem);
                return;
        }
@@ -1624,10 +1613,10 @@ community_print(netdissect_options *ndo,
            strncmp((const char *)elem.data.str, DEF_COMMUNITY,
                    sizeof(DEF_COMMUNITY) - 1) == 0)) {
                /* ! "public" */
-               ND_PRINT((ndo, "C="));
+               ND_PRINT("C=");
                if (asn1_print_string(ndo, &elem) == -1)
                        return;
-               ND_PRINT((ndo, " "));
+               ND_PRINT(" ");
        }
        length -= count;
        np += count;
@@ -1649,7 +1638,7 @@ usm_print(netdissect_options *ndo,
        if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_SEQ) {
-               ND_PRINT((ndo, "[!usm]"));
+               ND_PRINT("[!usm]");
                asn1_print(ndo, &elem);
                return;
        }
@@ -1660,7 +1649,7 @@ usm_print(netdissect_options *ndo,
        if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_STR) {
-               ND_PRINT((ndo, "[msgAuthoritativeEngineID!=STR]"));
+               ND_PRINT("[msgAuthoritativeEngineID!=STR]");
                asn1_print(ndo, &elem);
                return;
        }
@@ -1671,12 +1660,12 @@ usm_print(netdissect_options *ndo,
        if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_INT) {
-               ND_PRINT((ndo, "[msgAuthoritativeEngineBoots!=INT]"));
+               ND_PRINT("[msgAuthoritativeEngineBoots!=INT]");
                asn1_print(ndo, &elem);
                return;
        }
        if (ndo->ndo_vflag)
-               ND_PRINT((ndo, "B=%d ", elem.data.integer));
+               ND_PRINT("B=%d ", elem.data.integer);
        length -= count;
        np += count;
 
@@ -1684,12 +1673,12 @@ usm_print(netdissect_options *ndo,
        if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_INT) {
-               ND_PRINT((ndo, "[msgAuthoritativeEngineTime!=INT]"));
+               ND_PRINT("[msgAuthoritativeEngineTime!=INT]");
                asn1_print(ndo, &elem);
                return;
        }
        if (ndo->ndo_vflag)
-               ND_PRINT((ndo, "T=%d ", elem.data.integer));
+               ND_PRINT("T=%d ", elem.data.integer);
        length -= count;
        np += count;
 
@@ -1697,23 +1686,23 @@ usm_print(netdissect_options *ndo,
        if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_STR) {
-               ND_PRINT((ndo, "[msgUserName!=STR]"));
+               ND_PRINT("[msgUserName!=STR]");
                asn1_print(ndo, &elem);
                return;
        }
        length -= count;
         np += count;
 
-       ND_PRINT((ndo, "U="));
+       ND_PRINT("U=");
        if (asn1_print_string(ndo, &elem) == -1)
                return;
-       ND_PRINT((ndo, " "));
+       ND_PRINT(" ");
 
        /* msgAuthenticationParameters (OCTET STRING) */
        if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_STR) {
-               ND_PRINT((ndo, "[msgAuthenticationParameters!=STR]"));
+               ND_PRINT("[msgAuthenticationParameters!=STR]");
                asn1_print(ndo, &elem);
                return;
        }
@@ -1724,7 +1713,7 @@ usm_print(netdissect_options *ndo,
        if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_STR) {
-               ND_PRINT((ndo, "[msgPrivacyParameters!=STR]"));
+               ND_PRINT("[msgPrivacyParameters!=STR]");
                asn1_print(ndo, &elem);
                return;
        }
@@ -1732,7 +1721,7 @@ usm_print(netdissect_options *ndo,
         np += count;
 
        if ((u_int)count < length)
-               ND_PRINT((ndo, "[%d extra after usm SEQ]", length - count));
+               ND_PRINT("[%d extra after usm SEQ]", length - count);
 }
 
 /*
@@ -1753,7 +1742,7 @@ v3msg_print(netdissect_options *ndo,
        if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_SEQ) {
-               ND_PRINT((ndo, "[!message]"));
+               ND_PRINT("[!message]");
                asn1_print(ndo, &elem);
                return;
        }
@@ -1761,14 +1750,14 @@ v3msg_print(netdissect_options *ndo,
        np = (const u_char *)elem.data.raw;
 
        if (ndo->ndo_vflag) {
-               ND_PRINT((ndo, "{ "));
+               ND_PRINT("{ ");
        }
 
        /* msgID (INTEGER) */
        if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_INT) {
-               ND_PRINT((ndo, "[msgID!=INT]"));
+               ND_PRINT("[msgID!=INT]");
                asn1_print(ndo, &elem);
                return;
        }
@@ -1779,7 +1768,7 @@ v3msg_print(netdissect_options *ndo,
        if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_INT) {
-               ND_PRINT((ndo, "[msgMaxSize!=INT]"));
+               ND_PRINT("[msgMaxSize!=INT]");
                asn1_print(ndo, &elem);
                return;
        }
@@ -1790,33 +1779,33 @@ v3msg_print(netdissect_options *ndo,
        if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_STR) {
-               ND_PRINT((ndo, "[msgFlags!=STR]"));
+               ND_PRINT("[msgFlags!=STR]");
                asn1_print(ndo, &elem);
                return;
        }
        if (elem.asnlen != 1) {
-               ND_PRINT((ndo, "[msgFlags size %d]", elem.asnlen));
+               ND_PRINT("[msgFlags size %d]", elem.asnlen);
                return;
        }
-       flags = elem.data.str[0];
+       flags = GET_U_1(elem.data.str);
        if (flags != 0x00 && flags != 0x01 && flags != 0x03
            && flags != 0x04 && flags != 0x05 && flags != 0x07) {
-               ND_PRINT((ndo, "[msgFlags=0x%02X]", flags));
+               ND_PRINT("[msgFlags=0x%02X]", flags);
                return;
        }
        length -= count;
        np += count;
 
-       ND_PRINT((ndo, "F=%s%s%s ",
+       ND_PRINT("F=%s%s%s ",
                  flags & 0x01 ? "a" : "",
                  flags & 0x02 ? "p" : "",
-                 flags & 0x04 ? "r" : ""));
+                 flags & 0x04 ? "r" : "");
 
        /* msgSecurityModel (INTEGER) */
        if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_INT) {
-               ND_PRINT((ndo, "[msgSecurityModel!=INT]"));
+               ND_PRINT("[msgSecurityModel!=INT]");
                asn1_print(ndo, &elem);
                return;
        }
@@ -1825,18 +1814,18 @@ v3msg_print(netdissect_options *ndo,
        np += count;
 
        if ((u_int)count < length)
-               ND_PRINT((ndo, "[%d extra after message SEQ]", length - count));
+               ND_PRINT("[%d extra after message SEQ]", length - count);
 
        if (ndo->ndo_vflag) {
-               ND_PRINT((ndo, "} "));
+               ND_PRINT("} ");
        }
 
        if (model == 3) {
            if (ndo->ndo_vflag) {
-               ND_PRINT((ndo, "{ USM "));
+               ND_PRINT("{ USM ");
            }
        } else {
-           ND_PRINT((ndo, "[security model %d]", model));
+           ND_PRINT("[security model %d]", model);
             return;
        }
 
@@ -1847,7 +1836,7 @@ v3msg_print(netdissect_options *ndo,
        if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_STR) {
-               ND_PRINT((ndo, "[msgSecurityParameters!=STR]"));
+               ND_PRINT("[msgSecurityParameters!=STR]");
                asn1_print(ndo, &elem);
                return;
        }
@@ -1857,18 +1846,18 @@ v3msg_print(netdissect_options *ndo,
        if (model == 3) {
            usm_print(ndo, elem.data.str, elem.asnlen);
            if (ndo->ndo_vflag) {
-               ND_PRINT((ndo, "} "));
+               ND_PRINT("} ");
            }
        }
 
        if (ndo->ndo_vflag) {
-           ND_PRINT((ndo, "{ ScopedPDU "));
+           ND_PRINT("{ ScopedPDU ");
        }
 
        scopedpdu_print(ndo, np, length, 3);
 
        if (ndo->ndo_vflag) {
-               ND_PRINT((ndo, "} "));
+               ND_PRINT("} ");
        }
 }
 
@@ -1883,18 +1872,19 @@ snmp_print(netdissect_options *ndo,
        int count = 0;
        int version = 0;
 
-       ND_PRINT((ndo, " "));
+       ndo->ndo_protocol = "snmp";
+       ND_PRINT(" ");
 
        /* initial Sequence */
        if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_SEQ) {
-               ND_PRINT((ndo, "[!init SEQ]"));
+               ND_PRINT("[!init SEQ]");
                asn1_print(ndo, &elem);
                return;
        }
        if ((u_int)count < length)
-               ND_PRINT((ndo, "[%d extra after iSEQ]", length - count));
+               ND_PRINT("[%d extra after iSEQ]", length - count);
        /* descend */
        length = elem.asnlen;
        np = (const u_char *)elem.data.raw;
@@ -1903,7 +1893,7 @@ snmp_print(netdissect_options *ndo,
        if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_INT) {
-               ND_PRINT((ndo, "[version!=INT]"));
+               ND_PRINT("[version!=INT]");
                asn1_print(ndo, &elem);
                return;
        }
@@ -1913,10 +1903,10 @@ snmp_print(netdissect_options *ndo,
        case SNMP_VERSION_2:
        case SNMP_VERSION_3:
                if (ndo->ndo_vflag)
-                       ND_PRINT((ndo, "{ %s ", SnmpVersion[elem.data.integer]));
+                       ND_PRINT("{ %s ", SnmpVersion[elem.data.integer]);
                break;
        default:
-               ND_PRINT((ndo, "SNMP [version = %d]", elem.data.integer));
+               ND_PRINT("SNMP [version = %d]", elem.data.integer);
                return;
        }
        version = elem.data.integer;
@@ -1932,11 +1922,11 @@ snmp_print(netdissect_options *ndo,
                v3msg_print(ndo, np, length);
                break;
        default:
-               ND_PRINT((ndo, "[version = %d]", elem.data.integer));
+               ND_PRINT("[version = %d]", elem.data.integer);
                break;
        }
 
        if (ndo->ndo_vflag) {
-               ND_PRINT((ndo, "} "));
+               ND_PRINT("} ");
        }
 }