]> The Tcpdump Group git mirrors - tcpdump/blobdiff - print-snmp.c
Squelch a Coverity warning.
[tcpdump] / print-snmp.c
index 1fd34eab12004e8a61653f2372b1d5313db73027..a2aa0742d201fb5b14a06d56b28d52eafa413105 100644 (file)
  #     @(#)snmp.awk.x  1.1 (LANL) 1/15/90
  */
 
-#ifndef lint
-static const char rcsid[] _U_ =
-    "@(#) $Header: /tcpdump/master/tcpdump/print-snmp.c,v 1.64 2005-05-06 07:56:53 guy Exp $ (LBL)";
-#endif
-
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
 
-#include <tcpdump-stdinc.h>
+#include <netdissect-stdinc.h>
 
 #include <stdio.h>
 #include <string.h>
 
-#ifdef HAVE_SMI_H
+#ifdef USE_LIBSMI
 #include <smi.h>
 #endif
 
-#include "interface.h"
-#include "addrtoname.h"
+#include "netdissect.h"
 
 #undef OPAQUE  /* defined in <wingdi.h> */
 
@@ -317,10 +311,10 @@ static const struct obj_abrev {
                } while ((objp = objp->next) != NULL); \
        } \
        if (objp) { \
-               printf(suppressdot?"%s":".%s", objp->desc); \
+               ND_PRINT((ndo, suppressdot?"%s":".%s", objp->desc)); \
                objp = objp->child; \
        } else \
-               printf(suppressdot?"%u":".%u", (o)); \
+               ND_PRINT((ndo, suppressdot?"%u":".%u", (o))); \
 }
 
 /*
@@ -328,15 +322,15 @@ static const struct obj_abrev {
  * temporary internal representation while decoding an ASN.1 data stream.
  */
 struct be {
-       u_int32_t asnlen;
+       uint32_t asnlen;
        union {
-               caddr_t raw;
+               const uint8_t *raw;
                int32_t integer;
-               u_int32_t uns;
+               uint32_t uns;
                const u_char *str;
                struct {
-                       u_int32_t high;
-                       u_int32_t low;
+                       uint32_t high;
+                       uint32_t low;
                } uns64;
        } data;
        u_short id;
@@ -405,7 +399,8 @@ static const char *SnmpVersion[] = {
  * O/w, this returns the number of bytes parsed from "p".
  */
 static int
-asn1_parse(register const u_char *p, u_int len, struct be *elem)
+asn1_parse(netdissect_options *ndo,
+           register const u_char *p, u_int len, struct be *elem)
 {
        u_char form, class, id;
        int i, hdr;
@@ -413,10 +408,10 @@ asn1_parse(register const u_char *p, u_int len, struct be *elem)
        elem->asnlen = 0;
        elem->type = BE_ANY;
        if (len < 1) {
-               fputs("[nothing to parse]", stdout);
+               ND_PRINT((ndo, "[nothing to parse]"));
                return -1;
        }
-       TCHECK(*p);
+       ND_TCHECK(*p);
 
        /*
         * it would be nice to use a bit field, but you can't depend on them.
@@ -452,54 +447,54 @@ asn1_parse(register const u_char *p, u_int len, struct be *elem)
                 */
                for (id = 0; *p & ASN_BIT8; len--, hdr++, p++) {
                        if (len < 1) {
-                               fputs("[Xtagfield?]", stdout);
+                               ND_PRINT((ndo, "[Xtagfield?]"));
                                return -1;
                        }
-                       TCHECK(*p);
+                       ND_TCHECK(*p);
                        id = (id << 7) | (*p & ~ASN_BIT8);
                }
                if (len < 1) {
-                       fputs("[Xtagfield?]", stdout);
+                       ND_PRINT((ndo, "[Xtagfield?]"));
                        return -1;
                }
-               TCHECK(*p);
+               ND_TCHECK(*p);
                elem->id = id = (id << 7) | *p;
                --len;
                ++hdr;
                ++p;
        }
        if (len < 1) {
-               fputs("[no asnlen]", stdout);
+               ND_PRINT((ndo, "[no asnlen]"));
                return -1;
        }
-       TCHECK(*p);
+       ND_TCHECK(*p);
        elem->asnlen = *p;
        p++; len--; hdr++;
        if (elem->asnlen & ASN_BIT8) {
-               u_int32_t noct = elem->asnlen % ASN_BIT8;
+               uint32_t noct = elem->asnlen % ASN_BIT8;
                elem->asnlen = 0;
                if (len < noct) {
-                       printf("[asnlen? %d<%d]", len, noct);
+                       ND_PRINT((ndo, "[asnlen? %d<%d]", len, noct));
                        return -1;
                }
-               TCHECK2(*p, noct);
+               ND_TCHECK2(*p, noct);
                for (; noct-- > 0; len--, hdr++)
                        elem->asnlen = (elem->asnlen << ASN_SHIFT8) | *p++;
        }
        if (len < elem->asnlen) {
-               printf("[len%d<asnlen%u]", len, elem->asnlen);
+               ND_PRINT((ndo, "[len%d<asnlen%u]", len, elem->asnlen));
                return -1;
        }
        if (form >= sizeof(Form)/sizeof(Form[0])) {
-               printf("[form?%d]", form);
+               ND_PRINT((ndo, "[form?%d]", form));
                return -1;
        }
        if (class >= sizeof(Class)/sizeof(Class[0])) {
-               printf("[class?%c/%d]", *Form[form], class);
+               ND_PRINT((ndo, "[class?%c/%d]", *Form[form], class));
                return -1;
        }
        if ((int)id >= Class[class].numIDs) {
-               printf("[id?%c/%s/%d]", *Form[form], Class[class].name, id);
+               ND_PRINT((ndo, "[id?%c/%s/%d]", *Form[form], Class[class].name, id));
                return -1;
        }
 
@@ -518,7 +513,7 @@ asn1_parse(register const u_char *p, u_int len, struct be *elem)
                                elem->type = BE_INT;
                                data = 0;
 
-                               TCHECK2(*p, elem->asnlen);
+                               ND_TCHECK2(*p, elem->asnlen);
                                if (*p & ASN_BIT8)      /* negative */
                                        data = -1;
                                for (i = elem->asnlen; i-- > 0; p++)
@@ -529,7 +524,7 @@ asn1_parse(register const u_char *p, u_int len, struct be *elem)
 
                        case OBJECTID:
                                elem->type = BE_OID;
-                               elem->data.raw = (caddr_t)p;
+                               elem->data.raw = (const uint8_t *)p;
                                break;
 
                        case ASN_NULL:
@@ -539,9 +534,8 @@ asn1_parse(register const u_char *p, u_int len, struct be *elem)
 
                        default:
                                elem->type = BE_OCTET;
-                               elem->data.raw = (caddr_t)p;
-                               printf("[P/U/%s]",
-                                       Class[class].Id[id]);
+                               elem->data.raw = (const uint8_t *)p;
+                               ND_PRINT((ndo, "[P/U/%s]", Class[class].Id[id]));
                                break;
                        }
                        break;
@@ -550,14 +544,14 @@ asn1_parse(register const u_char *p, u_int len, struct be *elem)
                        switch (id) {
                        case IPADDR:
                                elem->type = BE_INETADDR;
-                               elem->data.raw = (caddr_t)p;
+                               elem->data.raw = (const uint8_t *)p;
                                break;
 
                        case COUNTER:
                        case GAUGE:
                        case TIMETICKS: {
-                               register u_int32_t data;
-                               TCHECK2(*p, elem->asnlen);
+                               register uint32_t data;
+                               ND_TCHECK2(*p, elem->asnlen);
                                elem->type = BE_UNS;
                                data = 0;
                                for (i = elem->asnlen; i-- > 0; p++)
@@ -567,8 +561,8 @@ asn1_parse(register const u_char *p, u_int len, struct be *elem)
                        }
 
                        case COUNTER64: {
-                               register u_int32_t high, low;
-                               TCHECK2(*p, elem->asnlen);
+                               register uint32_t high, low;
+                               ND_TCHECK2(*p, elem->asnlen);
                                elem->type = BE_UNS64;
                                high = 0, low = 0;
                                for (i = elem->asnlen; i-- > 0; p++) {
@@ -583,9 +577,9 @@ asn1_parse(register const u_char *p, u_int len, struct be *elem)
 
                        default:
                                elem->type = BE_OCTET;
-                               elem->data.raw = (caddr_t)p;
-                               printf("[P/A/%s]",
-                                       Class[class].Id[id]);
+                               elem->data.raw = (const uint8_t *)p;
+                               ND_PRINT((ndo, "[P/A/%s]",
+                                       Class[class].Id[id]));
                                break;
                        }
                        break;
@@ -610,11 +604,10 @@ asn1_parse(register const u_char *p, u_int len, struct be *elem)
                        break;
 
                default:
-                       printf("[P/%s/%s]",
-                               Class[class].name, Class[class].Id[id]);
-                       TCHECK2(*p, elem->asnlen);
+                       ND_PRINT((ndo, "[P/%s/%s]", Class[class].name, Class[class].Id[id]));
+                       ND_TCHECK2(*p, elem->asnlen);
                        elem->type = BE_OCTET;
-                       elem->data.raw = (caddr_t)p;
+                       elem->data.raw = (const uint8_t *)p;
                        break;
                }
                break;
@@ -625,27 +618,26 @@ asn1_parse(register const u_char *p, u_int len, struct be *elem)
                        switch (id) {
                        case SEQUENCE:
                                elem->type = BE_SEQ;
-                               elem->data.raw = (caddr_t)p;
+                               elem->data.raw = (const uint8_t *)p;
                                break;
 
                        default:
                                elem->type = BE_OCTET;
-                               elem->data.raw = (caddr_t)p;
-                               printf("C/U/%s", Class[class].Id[id]);
+                               elem->data.raw = (const uint8_t *)p;
+                               ND_PRINT((ndo, "C/U/%s", Class[class].Id[id]));
                                break;
                        }
                        break;
 
                case CONTEXT:
                        elem->type = BE_PDU;
-                       elem->data.raw = (caddr_t)p;
+                       elem->data.raw = (const uint8_t *)p;
                        break;
 
                default:
                        elem->type = BE_OCTET;
-                       elem->data.raw = (caddr_t)p;
-                       printf("C/%s/%s",
-                               Class[class].name, Class[class].Id[id]);
+                       elem->data.raw = (const uint8_t *)p;
+                       ND_PRINT((ndo, "C/%s/%s", Class[class].name, Class[class].Id[id]));
                        break;
                }
                break;
@@ -655,7 +647,7 @@ asn1_parse(register const u_char *p, u_int len, struct be *elem)
        return elem->asnlen + hdr;
 
 trunc:
-       printf("%s", tstr);
+       ND_PRINT((ndo, "%s", tstr));
        return -1;
 }
 
@@ -665,44 +657,46 @@ trunc:
  * BE form was added.
  */
 static int
-asn1_print(struct be *elem)
+asn1_print(netdissect_options *ndo,
+           struct be *elem)
 {
-       u_char *p = (u_char *)elem->data.raw;
-       u_int32_t asnlen = elem->asnlen;
-       u_int32_t i;
+       const u_char *p = (const u_char *)elem->data.raw;
+       uint32_t asnlen = elem->asnlen;
+       uint32_t i;
 
        switch (elem->type) {
 
        case BE_OCTET:
-               TCHECK2(*p, asnlen);
+               ND_TCHECK2(*p, asnlen);
                for (i = asnlen; i-- > 0; p++)
-                       printf("_%.2x", *p);
+                       ND_PRINT((ndo, "_%.2x", *p));
                break;
 
        case BE_NULL:
                break;
 
        case BE_OID: {
-               int o = 0, first = -1, i = asnlen;
+               int o = 0, first = -1;
 
-               if (!sflag && !nflag && asnlen > 2) {
+               i = asnlen;
+               if (!ndo->ndo_mflag && !ndo->ndo_nflag && asnlen > 2) {
                        const struct obj_abrev *a = &obj_abrev_list[0];
                        size_t a_len = strlen(a->oid);
                        for (; a->node; a++) {
-                               TCHECK2(*p, a_len);
-                               if (memcmp(a->oid, (char *)p, a_len) == 0) {
+                               ND_TCHECK2(*p, a_len);
+                               if (memcmp(a->oid, p, a_len) == 0) {
                                        objp = a->node->child;
                                        i -= strlen(a->oid);
                                        p += strlen(a->oid);
-                                       fputs(a->prefix, stdout);
+                                       ND_PRINT((ndo, "%s", a->prefix));
                                        first = 1;
                                        break;
                                }
                        }
                }
 
-               for (; !sflag && i-- > 0; p++) {
-                       TCHECK(*p);
+               for (; !ndo->ndo_mflag && i-- > 0; p++) {
+                       ND_TCHECK(*p);
                        o = (o << ASN_SHIFT7) + (*p & ~ASN_BIT8);
                        if (*p & ASN_LONGLEN)
                                continue;
@@ -713,7 +707,7 @@ asn1_print(struct be *elem)
                         */
                        if (first < 0) {
                                int s;
-                               if (!nflag)
+                               if (!ndo->ndo_nflag)
                                        objp = mibroot;
                                first = 0;
                                s = o / OIDMUX;
@@ -730,11 +724,11 @@ asn1_print(struct be *elem)
        }
 
        case BE_INT:
-               printf("%d", elem->data.integer);
+               ND_PRINT((ndo, "%d", elem->data.integer));
                break;
 
        case BE_UNS:
-               printf("%u", elem->data.uns);
+               ND_PRINT((ndo, "%u", elem->data.uns));
                break;
 
        case BE_UNS64: {        /* idea borrowed from by Marshall Rose */
@@ -742,16 +736,16 @@ asn1_print(struct be *elem)
                int j, carry;
                char *cpf, *cpl, last[6], first[30];
                if (elem->data.uns64.high == 0) {
-                       printf("%u", elem->data.uns64.low);
-                       break;
+                       ND_PRINT((ndo, "%u", elem->data.uns64.low));
+                       break;
                }
                d = elem->data.uns64.high * 4294967296.0;       /* 2^32 */
                if (elem->data.uns64.high <= 0x1fffff) {
                        d += elem->data.uns64.low;
 #if 0 /*is looks illegal, but what is the intention?*/
-                       printf("%.f", d);
+                       ND_PRINT((ndo, "%.f", d));
 #else
-                       printf("%f", d);
+                       ND_PRINT((ndo, "%f", d));
 #endif
                        break;
                }
@@ -775,68 +769,68 @@ asn1_print(struct be *elem)
                        }
                        *cpf = j + '0';
                }
-               fputs(first, stdout);
+               ND_PRINT((ndo, "%s", first));
                break;
        }
 
        case BE_STR: {
                register int printable = 1, first = 1;
-               const u_char *p = elem->data.str;
-               TCHECK2(*p, asnlen);
+
+               p = elem->data.str;
+               ND_TCHECK2(*p, asnlen);
                for (i = asnlen; printable && i-- > 0; p++)
-                       printable = isprint(*p) || isspace(*p);
+                       printable = ND_ISPRINT(*p);
                p = elem->data.str;
                if (printable) {
-                       putchar('"');
-                       if (fn_printn(p, asnlen, snapend)) {
-                               putchar('"');
+                       ND_PRINT((ndo, "\""));
+                       if (fn_printn(ndo, p, asnlen, ndo->ndo_snapend)) {
+                               ND_PRINT((ndo, "\""));
                                goto trunc;
                        }
-                       putchar('"');
+                       ND_PRINT((ndo, "\""));
                } else
                        for (i = asnlen; i-- > 0; p++) {
-                               printf(first ? "%.2x" : "_%.2x", *p);
+                               ND_PRINT((ndo, first ? "%.2x" : "_%.2x", *p));
                                first = 0;
                        }
                break;
        }
 
        case BE_SEQ:
-               printf("Seq(%u)", elem->asnlen);
+               ND_PRINT((ndo, "Seq(%u)", elem->asnlen));
                break;
 
        case BE_INETADDR:
                if (asnlen != ASNLEN_INETADDR)
-                       printf("[inetaddr len!=%d]", ASNLEN_INETADDR);
-               TCHECK2(*p, asnlen);
+                       ND_PRINT((ndo, "[inetaddr len!=%d]", ASNLEN_INETADDR));
+               ND_TCHECK2(*p, asnlen);
                for (i = asnlen; i-- != 0; p++) {
-                       printf((i == asnlen-1) ? "%u" : ".%u", *p);
+                       ND_PRINT((ndo, (i == asnlen-1) ? "%u" : ".%u", *p));
                }
                break;
 
        case BE_NOSUCHOBJECT:
        case BE_NOSUCHINST:
        case BE_ENDOFMIBVIEW:
-               printf("[%s]", Class[EXCEPTIONS].Id[elem->id]);
+               ND_PRINT((ndo, "[%s]", Class[EXCEPTIONS].Id[elem->id]));
                break;
 
        case BE_PDU:
-               printf("%s(%u)",
-                       Class[CONTEXT].Id[elem->id], elem->asnlen);
+               ND_PRINT((ndo, "%s(%u)", Class[CONTEXT].Id[elem->id], elem->asnlen));
                break;
 
        case BE_ANY:
-               fputs("[BE_ANY!?]", stdout);
+               ND_PRINT((ndo, "[BE_ANY!?]"));
                break;
 
        default:
-               fputs("[be!?]", stdout);
+               ND_PRINT((ndo, "[be!?]"));
                break;
        }
        return 0;
 
 trunc:
-       printf("%s", tstr);
+       ND_PRINT((ndo, "%s", tstr));
        return -1;
 }
 
@@ -857,15 +851,15 @@ asn1_decode(u_char *p, u_int length)
        int i = 0;
 
        while (i >= 0 && length > 0) {
-               i = asn1_parse(p, length, &elem);
+               i = asn1_parse(ndo, p, length, &elem);
                if (i >= 0) {
-                       fputs(" ", stdout);
-                       if (asn1_print(&elem) < 0)
+                       ND_PRINT((ndo, " "));
+                       if (asn1_print(ndo, &elem) < 0)
                                return;
                        if (elem.type == BE_SEQ || elem.type == BE_PDU) {
-                               fputs(" {", stdout);
+                               ND_PRINT((ndo, " {"));
                                asn1_decode(elem.data.raw, elem.asnlen);
-                               fputs(" }", stdout);
+                               ND_PRINT((ndo, " }"));
                        }
                        length -= i;
                        p += i;
@@ -874,7 +868,7 @@ asn1_decode(u_char *p, u_int length)
 }
 #endif
 
-#ifdef LIBSMI
+#ifdef USE_LIBSMI
 
 struct smi2be {
     SmiBasetype basetype;
@@ -898,15 +892,17 @@ static const struct smi2be smi2betab[] = {
 };
 
 static int
-smi_decode_oid(struct be *elem, unsigned int *oid,
-              unsigned int oidsize, unsigned int *oidlen)
+smi_decode_oid(netdissect_options *ndo,
+               struct be *elem, unsigned int *oid,
+               unsigned int oidsize, unsigned int *oidlen)
 {
-       u_char *p = (u_char *)elem->data.raw;
-       u_int32_t asnlen = elem->asnlen;
+       const u_char *p = (const u_char *)elem->data.raw;
+       uint32_t asnlen = elem->asnlen;
        int o = 0, first = -1, i = asnlen;
+       unsigned int firstval;
 
-       for (*oidlen = 0; sflag && i-- > 0; p++) {
-               TCHECK(*p);
+       for (*oidlen = 0; ndo->ndo_mflag && i-- > 0; p++) {
+               ND_TCHECK(*p);
                o = (o << ASN_SHIFT7) + (*p & ~ASN_BIT8);
                if (*p & ASN_LONGLEN)
                    continue;
@@ -917,12 +913,12 @@ smi_decode_oid(struct be *elem, unsigned int *oid,
                 */
                if (first < 0) {
                        first = 0;
+                       firstval = o / OIDMUX;
+                       if (firstval > 2) firstval = 2;
+                       o -= firstval * OIDMUX;
                        if (*oidlen < oidsize) {
-                           oid[*oidlen] = o / OIDMUX;
-                           if (oid[*oidlen] > 2) oid[*oidlen] = 2;
+                           oid[(*oidlen)++] = firstval;
                        }
-                       o -= oid[*oidlen] * OIDMUX;
-                       if (*oidlen < oidsize) (*oidlen)++;
                }
                if (*oidlen < oidsize) {
                        oid[(*oidlen)++] = o;
@@ -932,7 +928,7 @@ smi_decode_oid(struct be *elem, unsigned int *oid,
        return 0;
 
 trunc:
-       printf("%s", tstr);
+       ND_PRINT((ndo, "%s", tstr));
        return -1;
 }
 
@@ -1026,29 +1022,30 @@ static int smi_check_range(SmiType *smiType, struct be *elem)
        return ok;
 }
 
-static SmiNode *smi_print_variable(struct be *elem, int *status)
+static SmiNode *
+smi_print_variable(netdissect_options *ndo,
+                   struct be *elem, int *status)
 {
        unsigned int oid[128], oidlen;
        SmiNode *smiNode = NULL;
        unsigned int i;
 
-       *status = smi_decode_oid(elem, oid, sizeof(oid)/sizeof(unsigned int),
+       *status = smi_decode_oid(ndo, elem, oid, sizeof(oid) / sizeof(unsigned int),
            &oidlen);
        if (*status < 0)
                return NULL;
        smiNode = smiGetNodeByOID(oidlen, oid);
        if (! smiNode) {
-               *status = asn1_print(elem);
+               *status = asn1_print(ndo, elem);
                return NULL;
        }
-       if (vflag) {
-               fputs(smiGetNodeModule(smiNode)->name, stdout);
-               fputs("::", stdout);
+       if (ndo->ndo_vflag) {
+               ND_PRINT((ndo, "%s::", smiGetNodeModule(smiNode)->name));
        }
-       fputs(smiNode->name, stdout);
+       ND_PRINT((ndo, "%s", smiNode->name));
        if (smiNode->oidlen < oidlen) {
-               for (i = smiNode->oidlen; i < oidlen; i++) {
-                       printf(".%u", oid[i]);
+               for (i = smiNode->oidlen; i < oidlen; i++) {
+                       ND_PRINT((ndo, ".%u", oid[i]));
                }
        }
        *status = 0;
@@ -1056,7 +1053,8 @@ static SmiNode *smi_print_variable(struct be *elem, int *status)
 }
 
 static int
-smi_print_value(SmiNode *smiNode, u_char pduid, struct be *elem)
+smi_print_value(netdissect_options *ndo,
+                SmiNode *smiNode, u_short pduid, struct be *elem)
 {
        unsigned int i, oid[128], oidlen;
        SmiType *smiType;
@@ -1065,43 +1063,43 @@ smi_print_value(SmiNode *smiNode, u_char pduid, struct be *elem)
 
        if (! smiNode || ! (smiNode->nodekind
                            & (SMI_NODEKIND_SCALAR | SMI_NODEKIND_COLUMN))) {
-           return asn1_print(elem);
+           return asn1_print(ndo, elem);
        }
 
        if (elem->type == BE_NOSUCHOBJECT
            || elem->type == BE_NOSUCHINST
            || elem->type == BE_ENDOFMIBVIEW) {
-           return asn1_print(elem);
+           return asn1_print(ndo, elem);
        }
 
        if (NOTIFY_CLASS(pduid) && smiNode->access < SMI_ACCESS_NOTIFY) {
-           fputs("[notNotifyable]", stdout);
+           ND_PRINT((ndo, "[notNotifyable]"));
        }
 
        if (READ_CLASS(pduid) && smiNode->access < SMI_ACCESS_READ_ONLY) {
-           fputs("[notReadable]", stdout);
+           ND_PRINT((ndo, "[notReadable]"));
        }
 
        if (WRITE_CLASS(pduid) && smiNode->access < SMI_ACCESS_READ_WRITE) {
-           fputs("[notWritable]", stdout);
+           ND_PRINT((ndo, "[notWritable]"));
        }
 
        if (RESPONSE_CLASS(pduid)
            && smiNode->access == SMI_ACCESS_NOT_ACCESSIBLE) {
-           fputs("[noAccess]", stdout);
+           ND_PRINT((ndo, "[noAccess]"));
        }
 
        smiType = smiGetNodeType(smiNode);
        if (! smiType) {
-           return asn1_print(elem);
+           return asn1_print(ndo, elem);
        }
 
        if (! smi_check_type(smiType->basetype, elem->type)) {
-           fputs("[wrongType]", stdout);
+           ND_PRINT((ndo, "[wrongType]"));
        }
 
        if (! smi_check_range(smiType, elem)) {
-           fputs("[outOfRange]", stdout);
+           ND_PRINT((ndo, "[outOfRange]"));
        }
 
        /* resolve bits to named bits */
@@ -1117,20 +1115,19 @@ smi_print_value(SmiNode *smiNode, u_char pduid, struct be *elem)
                if (smiType->basetype == SMI_BASETYPE_BITS) {
                        /* print bit labels */
                } else {
-                       smi_decode_oid(elem, oid,
+                       smi_decode_oid(ndo, elem, oid,
                                       sizeof(oid)/sizeof(unsigned int),
                                       &oidlen);
                        smiNode = smiGetNodeByOID(oidlen, oid);
                        if (smiNode) {
-                               if (vflag) {
-                                       fputs(smiGetNodeModule(smiNode)->name, stdout);
-                                       fputs("::", stdout);
+                               if (ndo->ndo_vflag) {
+                                       ND_PRINT((ndo, "%s::", smiGetNodeModule(smiNode)->name));
                                }
-                               fputs(smiNode->name, stdout);
+                               ND_PRINT((ndo, "%s", smiNode->name));
                                if (smiNode->oidlen < oidlen) {
                                        for (i = smiNode->oidlen;
                                             i < oidlen; i++) {
-                                               printf(".%u", oid[i]);
+                                               ND_PRINT((ndo, ".%u", oid[i]));
                                        }
                                }
                                done++;
@@ -1145,8 +1142,8 @@ smi_print_value(SmiNode *smiNode, u_char pduid, struct be *elem)
                             nn = smiGetNextNamedNumber(nn)) {
                                 if (nn->value.value.integer32
                                     == elem->data.integer) {
-                                        fputs(nn->name, stdout);
-                                        printf("(%d)", elem->data.integer);
+                                        ND_PRINT((ndo, "%s", nn->name));
+                                        ND_PRINT((ndo, "(%d)", elem->data.integer));
                                         done++;
                                         break;
                                }
@@ -1156,7 +1153,7 @@ smi_print_value(SmiNode *smiNode, u_char pduid, struct be *elem)
        }
 
        if (! done) {
-               return asn1_print(elem);
+               return asn1_print(ndo, elem);
        }
        return 0;
 }
@@ -1199,61 +1196,62 @@ smi_print_value(SmiNode *smiNode, u_char pduid, struct be *elem)
  * Decode SNMP varBind
  */
 static void
-varbind_print(u_char pduid, const u_char *np, u_int length)
+varbind_print(netdissect_options *ndo,
+              u_short pduid, const u_char *np, u_int length)
 {
        struct be elem;
        int count = 0, ind;
-#ifdef LIBSMI
+#ifdef USE_LIBSMI
        SmiNode *smiNode = NULL;
 #endif
        int status;
 
        /* Sequence of varBind */
-       if ((count = asn1_parse(np, length, &elem)) < 0)
+       if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_SEQ) {
-               fputs("[!SEQ of varbind]", stdout);
-               asn1_print(&elem);
+               ND_PRINT((ndo, "[!SEQ of varbind]"));
+               asn1_print(ndo, &elem);
                return;
        }
        if ((u_int)count < length)
-               printf("[%d extra after SEQ of varbind]", length - count);
+               ND_PRINT((ndo, "[%d extra after SEQ of varbind]", length - count));
        /* descend */
        length = elem.asnlen;
-       np = (u_char *)elem.data.raw;
+       np = (const u_char *)elem.data.raw;
 
        for (ind = 1; length > 0; ind++) {
                const u_char *vbend;
                u_int vblength;
 
-               fputs(" ", stdout);
+               ND_PRINT((ndo, " "));
 
                /* Sequence */
-               if ((count = asn1_parse(np, length, &elem)) < 0)
+               if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                        return;
                if (elem.type != BE_SEQ) {
-                       fputs("[!varbind]", stdout);
-                       asn1_print(&elem);
+                       ND_PRINT((ndo, "[!varbind]"));
+                       asn1_print(ndo, &elem);
                        return;
                }
                vbend = np + count;
                vblength = length - count;
                /* descend */
                length = elem.asnlen;
-               np = (u_char *)elem.data.raw;
+               np = (const u_char *)elem.data.raw;
 
                /* objName (OID) */
-               if ((count = asn1_parse(np, length, &elem)) < 0)
+               if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                        return;
                if (elem.type != BE_OID) {
-                       fputs("[objName!=OID]", stdout);
-                       asn1_print(&elem);
+                       ND_PRINT((ndo, "[objName!=OID]"));
+                       asn1_print(ndo, &elem);
                        return;
                }
-#ifdef LIBSMI
-               smiNode = smi_print_variable(&elem, &status);
+#ifdef USE_LIBSMI
+               smiNode = smi_print_variable(ndo, &elem, &status);
 #else
-               status = asn1_print(&elem);
+               status = asn1_print(ndo, &elem);
 #endif
                if (status < 0)
                        return;
@@ -1262,24 +1260,24 @@ varbind_print(u_char pduid, const u_char *np, u_int length)
 
                if (pduid != GETREQ && pduid != GETNEXTREQ
                    && pduid != GETBULKREQ)
-                       fputs("=", stdout);
+                       ND_PRINT((ndo, "="));
 
                /* objVal (ANY) */
-               if ((count = asn1_parse(np, length, &elem)) < 0)
+               if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                        return;
                if (pduid == GETREQ || pduid == GETNEXTREQ
                    || pduid == GETBULKREQ) {
                        if (elem.type != BE_NULL) {
-                               fputs("[objVal!=NULL]", stdout);
-                               if (asn1_print(&elem) < 0)
+                               ND_PRINT((ndo, "[objVal!=NULL]"));
+                               if (asn1_print(ndo, &elem) < 0)
                                        return;
                        }
                } else {
                        if (elem.type != BE_NULL) {
-#ifdef LIBSMI
-                               status = smi_print_value(smiNode, pduid, &elem);
+#ifdef USE_LIBSMI
+                               status = smi_print_value(ndo, smiNode, pduid, &elem);
 #else
-                               status = asn1_print(&elem);
+                               status = asn1_print(ndo, &elem);
 #endif
                        }
                        if (status < 0)
@@ -1295,79 +1293,76 @@ varbind_print(u_char pduid, const u_char *np, u_int length)
  * GetBulk, Inform, V2Trap, and Report
  */
 static void
-snmppdu_print(u_short pduid, const u_char *np, u_int length)
+snmppdu_print(netdissect_options *ndo,
+              u_short pduid, const u_char *np, u_int length)
 {
        struct be elem;
-       int count = 0, error;
+       int count = 0, error_status;
 
        /* reqId (Integer) */
-       if ((count = asn1_parse(np, length, &elem)) < 0)
+       if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_INT) {
-               fputs("[reqId!=INT]", stdout);
-               asn1_print(&elem);
+               ND_PRINT((ndo, "[reqId!=INT]"));
+               asn1_print(ndo, &elem);
                return;
        }
-       if (vflag)
-               printf("R=%d ", elem.data.integer);
+       if (ndo->ndo_vflag)
+               ND_PRINT((ndo, "R=%d ", elem.data.integer));
        length -= count;
        np += count;
 
        /* errorStatus (Integer) */
-       if ((count = asn1_parse(np, length, &elem)) < 0)
+       if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_INT) {
-               fputs("[errorStatus!=INT]", stdout);
-               asn1_print(&elem);
+               ND_PRINT((ndo, "[errorStatus!=INT]"));
+               asn1_print(ndo, &elem);
                return;
        }
-       error = 0;
+       error_status = 0;
        if ((pduid == GETREQ || pduid == GETNEXTREQ || pduid == SETREQ
            || pduid == INFORMREQ || pduid == V2TRAP || pduid == REPORT)
            && elem.data.integer != 0) {
                char errbuf[20];
-               printf("[errorStatus(%s)!=0]",
-                       DECODE_ErrorStatus(elem.data.integer));
+               ND_PRINT((ndo, "[errorStatus(%s)!=0]",
+                       DECODE_ErrorStatus(elem.data.integer)));
        } else if (pduid == GETBULKREQ) {
-               printf(" N=%d", elem.data.integer);
+               ND_PRINT((ndo, " N=%d", elem.data.integer));
        } else if (elem.data.integer != 0) {
                char errbuf[20];
-               printf(" %s", DECODE_ErrorStatus(elem.data.integer));
-               error = elem.data.integer;
+               ND_PRINT((ndo, " %s", DECODE_ErrorStatus(elem.data.integer)));
+               error_status = elem.data.integer;
        }
        length -= count;
        np += count;
 
        /* errorIndex (Integer) */
-       if ((count = asn1_parse(np, length, &elem)) < 0)
+       if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_INT) {
-               fputs("[errorIndex!=INT]", stdout);
-               asn1_print(&elem);
+               ND_PRINT((ndo, "[errorIndex!=INT]"));
+               asn1_print(ndo, &elem);
                return;
        }
        if ((pduid == GETREQ || pduid == GETNEXTREQ || pduid == SETREQ
            || pduid == INFORMREQ || pduid == V2TRAP || pduid == REPORT)
            && elem.data.integer != 0)
-               printf("[errorIndex(%d)!=0]", elem.data.integer);
+               ND_PRINT((ndo, "[errorIndex(%d)!=0]", elem.data.integer));
        else if (pduid == GETBULKREQ)
-               printf(" M=%d", elem.data.integer);
+               ND_PRINT((ndo, " M=%d", elem.data.integer));
        else if (elem.data.integer != 0) {
-               if (!error)
-                       printf("[errorIndex(%d) w/o errorStatus]",
-                               elem.data.integer);
-               else {
-                       printf("@%d", elem.data.integer);
-                       error = elem.data.integer;
-               }
-       } else if (error) {
-               fputs("[errorIndex==0]", stdout);
-               error = 0;
+               if (!error_status)
+                       ND_PRINT((ndo, "[errorIndex(%d) w/o errorStatus]", elem.data.integer));
+               else
+                       ND_PRINT((ndo, "@%d", elem.data.integer));
+       } else if (error_status) {
+               ND_PRINT((ndo, "[errorIndex==0]"));
        }
        length -= count;
        np += count;
 
-       varbind_print(pduid, np, length);
+       varbind_print(ndo, pduid, np, length);
        return;
 }
 
@@ -1375,89 +1370,90 @@ snmppdu_print(u_short pduid, const u_char *np, u_int length)
  * Decode SNMP Trap PDU
  */
 static void
-trappdu_print(const u_char *np, u_int length)
+trappdu_print(netdissect_options *ndo,
+              const u_char *np, u_int length)
 {
        struct be elem;
        int count = 0, generic;
 
-       putchar(' ');
+       ND_PRINT((ndo, " "));
 
        /* enterprise (oid) */
-       if ((count = asn1_parse(np, length, &elem)) < 0)
+       if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_OID) {
-               fputs("[enterprise!=OID]", stdout);
-               asn1_print(&elem);
+               ND_PRINT((ndo, "[enterprise!=OID]"));
+               asn1_print(ndo, &elem);
                return;
        }
-       if (asn1_print(&elem) < 0)
+       if (asn1_print(ndo, &elem) < 0)
                return;
        length -= count;
        np += count;
 
-       putchar(' ');
+       ND_PRINT((ndo, " "));
 
        /* agent-addr (inetaddr) */
-       if ((count = asn1_parse(np, length, &elem)) < 0)
+       if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_INETADDR) {
-               fputs("[agent-addr!=INETADDR]", stdout);
-               asn1_print(&elem);
+               ND_PRINT((ndo, "[agent-addr!=INETADDR]"));
+               asn1_print(ndo, &elem);
                return;
        }
-       if (asn1_print(&elem) < 0)
+       if (asn1_print(ndo, &elem) < 0)
                return;
        length -= count;
        np += count;
 
        /* generic-trap (Integer) */
-       if ((count = asn1_parse(np, length, &elem)) < 0)
+       if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_INT) {
-               fputs("[generic-trap!=INT]", stdout);
-               asn1_print(&elem);
+               ND_PRINT((ndo, "[generic-trap!=INT]"));
+               asn1_print(ndo, &elem);
                return;
        }
        generic = elem.data.integer;
        {
                char buf[20];
-               printf(" %s", DECODE_GenericTrap(generic));
+               ND_PRINT((ndo, " %s", DECODE_GenericTrap(generic)));
        }
        length -= count;
        np += count;
 
        /* specific-trap (Integer) */
-       if ((count = asn1_parse(np, length, &elem)) < 0)
+       if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_INT) {
-               fputs("[specific-trap!=INT]", stdout);
-               asn1_print(&elem);
+               ND_PRINT((ndo, "[specific-trap!=INT]"));
+               asn1_print(ndo, &elem);
                return;
        }
        if (generic != GT_ENTERPRISE) {
                if (elem.data.integer != 0)
-                       printf("[specific-trap(%d)!=0]", elem.data.integer);
+                       ND_PRINT((ndo, "[specific-trap(%d)!=0]", elem.data.integer));
        } else
-               printf(" s=%d", elem.data.integer);
+               ND_PRINT((ndo, " s=%d", elem.data.integer));
        length -= count;
        np += count;
 
-       putchar(' ');
+       ND_PRINT((ndo, " "));
 
        /* time-stamp (TimeTicks) */
-       if ((count = asn1_parse(np, length, &elem)) < 0)
+       if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_UNS) {                      /* XXX */
-               fputs("[time-stamp!=TIMETICKS]", stdout);
-               asn1_print(&elem);
+               ND_PRINT((ndo, "[time-stamp!=TIMETICKS]"));
+               asn1_print(ndo, &elem);
                return;
        }
-       if (asn1_print(&elem) < 0)
+       if (asn1_print(ndo, &elem) < 0)
                return;
        length -= count;
        np += count;
 
-       varbind_print (TRAP, np, length);
+       varbind_print(ndo, TRAP, np, length);
        return;
 }
 
@@ -1465,45 +1461,46 @@ trappdu_print(const u_char *np, u_int length)
  * Decode arbitrary SNMP PDUs.
  */
 static void
-pdu_print(const u_char *np, u_int length, int version)
+pdu_print(netdissect_options *ndo,
+          const u_char *np, u_int length, int version)
 {
        struct be pdu;
        int count = 0;
 
        /* PDU (Context) */
-       if ((count = asn1_parse(np, length, &pdu)) < 0)
+       if ((count = asn1_parse(ndo, np, length, &pdu)) < 0)
                return;
        if (pdu.type != BE_PDU) {
-               fputs("[no PDU]", stdout);
+               ND_PRINT((ndo, "[no PDU]"));
                return;
        }
        if ((u_int)count < length)
-               printf("[%d extra after PDU]", length - count);
-       if (vflag) {
-               fputs("{ ", stdout);
+               ND_PRINT((ndo, "[%d extra after PDU]", length - count));
+       if (ndo->ndo_vflag) {
+               ND_PRINT((ndo, "{ "));
        }
-       if (asn1_print(&pdu) < 0)
+       if (asn1_print(ndo, &pdu) < 0)
                return;
-       fputs(" ", stdout);
+       ND_PRINT((ndo, " "));
        /* descend into PDU */
        length = pdu.asnlen;
-       np = (u_char *)pdu.data.raw;
+       np = (const u_char *)pdu.data.raw;
 
        if (version == SNMP_VERSION_1 &&
            (pdu.id == GETBULKREQ || pdu.id == INFORMREQ ||
             pdu.id == V2TRAP || pdu.id == REPORT)) {
-               printf("[v2 PDU in v1 message]");
+               ND_PRINT((ndo, "[v2 PDU in v1 message]"));
                return;
        }
 
        if (version == SNMP_VERSION_2 && pdu.id == TRAP) {
-               printf("[v1 PDU in v2 message]");
+               ND_PRINT((ndo, "[v1 PDU in v2 message]"));
                return;
        }
 
        switch (pdu.id) {
        case TRAP:
-               trappdu_print(np, length);
+               trappdu_print(ndo, np, length);
                break;
        case GETREQ:
        case GETNEXTREQ:
@@ -1513,12 +1510,12 @@ pdu_print(const u_char *np, u_int length, int version)
        case INFORMREQ:
        case V2TRAP:
        case REPORT:
-               snmppdu_print(pdu.id, np, length);
+               snmppdu_print(ndo, pdu.id, np, length);
                break;
        }
 
-       if (vflag) {
-               fputs(" } ", stdout);
+       if (ndo->ndo_vflag) {
+               ND_PRINT((ndo, " } "));
        }
 }
 
@@ -1526,185 +1523,189 @@ pdu_print(const u_char *np, u_int length, int version)
  * Decode a scoped SNMP PDU.
  */
 static void
-scopedpdu_print(const u_char *np, u_int length, int version)
+scopedpdu_print(netdissect_options *ndo,
+                const u_char *np, u_int length, int version)
 {
        struct be elem;
        int i, count = 0;
 
        /* Sequence */
-       if ((count = asn1_parse(np, length, &elem)) < 0)
+       if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_SEQ) {
-               fputs("[!scoped PDU]", stdout);
-               asn1_print(&elem);
+               ND_PRINT((ndo, "[!scoped PDU]"));
+               asn1_print(ndo, &elem);
                return;
        }
        length = elem.asnlen;
-       np = (u_char *)elem.data.raw;
+       np = (const u_char *)elem.data.raw;
 
        /* contextEngineID (OCTET STRING) */
-       if ((count = asn1_parse(np, length, &elem)) < 0)
+       if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_STR) {
-               fputs("[contextEngineID!=STR]", stdout);
-               asn1_print(&elem);
+               ND_PRINT((ndo, "[contextEngineID!=STR]"));
+               asn1_print(ndo, &elem);
                return;
        }
        length -= count;
        np += count;
 
-       fputs("E= ", stdout);
+       ND_PRINT((ndo, "E= "));
        for (i = 0; i < (int)elem.asnlen; i++) {
-            printf("0x%02X", elem.data.str[i]);
-        }
-       fputs(" ", stdout);
+               ND_PRINT((ndo, "0x%02X", elem.data.str[i]));
+       }
+       ND_PRINT((ndo, " "));
 
        /* contextName (OCTET STRING) */
-       if ((count = asn1_parse(np, length, &elem)) < 0)
+       if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_STR) {
-               fputs("[contextName!=STR]", stdout);
-               asn1_print(&elem);
+               ND_PRINT((ndo, "[contextName!=STR]"));
+               asn1_print(ndo, &elem);
                return;
        }
        length -= count;
        np += count;
 
-       printf("C=%.*s ", (int)elem.asnlen, elem.data.str);
+       ND_PRINT((ndo, "C=%.*s ", (int)elem.asnlen, elem.data.str));
 
-       pdu_print(np, length, version);
+       pdu_print(ndo, np, length, version);
 }
 
 /*
  * Decode SNMP Community Header (SNMPv1 and SNMPv2c)
  */
 static void
-community_print(const u_char *np, u_int length, int version)
+community_print(netdissect_options *ndo,
+                const u_char *np, u_int length, int version)
 {
        struct be elem;
        int count = 0;
 
        /* Community (String) */
-       if ((count = asn1_parse(np, length, &elem)) < 0)
+       if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_STR) {
-               fputs("[comm!=STR]", stdout);
-               asn1_print(&elem);
+               ND_PRINT((ndo, "[comm!=STR]"));
+               asn1_print(ndo, &elem);
                return;
        }
        /* default community */
        if (!(elem.asnlen == sizeof(DEF_COMMUNITY) - 1 &&
-           strncmp((char *)elem.data.str, DEF_COMMUNITY,
+           strncmp((const char *)elem.data.str, DEF_COMMUNITY,
                    sizeof(DEF_COMMUNITY) - 1) == 0))
                /* ! "public" */
-               printf("C=%.*s ", (int)elem.asnlen, elem.data.str);
+               ND_PRINT((ndo, "C=%.*s ", (int)elem.asnlen, elem.data.str));
        length -= count;
        np += count;
 
-       pdu_print(np, length, version);
+       pdu_print(ndo, np, length, version);
 }
 
 /*
  * Decode SNMPv3 User-based Security Message Header (SNMPv3)
  */
 static void
-usm_print(const u_char *np, u_int length)
+usm_print(netdissect_options *ndo,
+          const u_char *np, u_int length)
 {
         struct be elem;
        int count = 0;
 
        /* Sequence */
-       if ((count = asn1_parse(np, length, &elem)) < 0)
+       if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_SEQ) {
-               fputs("[!usm]", stdout);
-               asn1_print(&elem);
+               ND_PRINT((ndo, "[!usm]"));
+               asn1_print(ndo, &elem);
                return;
        }
        length = elem.asnlen;
-       np = (u_char *)elem.data.raw;
+       np = (const u_char *)elem.data.raw;
 
        /* msgAuthoritativeEngineID (OCTET STRING) */
-       if ((count = asn1_parse(np, length, &elem)) < 0)
+       if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_STR) {
-               fputs("[msgAuthoritativeEngineID!=STR]", stdout);
-               asn1_print(&elem);
+               ND_PRINT((ndo, "[msgAuthoritativeEngineID!=STR]"));
+               asn1_print(ndo, &elem);
                return;
        }
        length -= count;
        np += count;
 
        /* msgAuthoritativeEngineBoots (INTEGER) */
-       if ((count = asn1_parse(np, length, &elem)) < 0)
+       if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_INT) {
-               fputs("[msgAuthoritativeEngineBoots!=INT]", stdout);
-               asn1_print(&elem);
+               ND_PRINT((ndo, "[msgAuthoritativeEngineBoots!=INT]"));
+               asn1_print(ndo, &elem);
                return;
        }
-       if (vflag)
-               printf("B=%d ", elem.data.integer);
+       if (ndo->ndo_vflag)
+               ND_PRINT((ndo, "B=%d ", elem.data.integer));
        length -= count;
        np += count;
 
        /* msgAuthoritativeEngineTime (INTEGER) */
-       if ((count = asn1_parse(np, length, &elem)) < 0)
+       if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_INT) {
-               fputs("[msgAuthoritativeEngineTime!=INT]", stdout);
-               asn1_print(&elem);
+               ND_PRINT((ndo, "[msgAuthoritativeEngineTime!=INT]"));
+               asn1_print(ndo, &elem);
                return;
        }
-       if (vflag)
-               printf("T=%d ", elem.data.integer);
+       if (ndo->ndo_vflag)
+               ND_PRINT((ndo, "T=%d ", elem.data.integer));
        length -= count;
        np += count;
 
        /* msgUserName (OCTET STRING) */
-       if ((count = asn1_parse(np, length, &elem)) < 0)
+       if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_STR) {
-               fputs("[msgUserName!=STR]", stdout);
-               asn1_print(&elem);
+               ND_PRINT((ndo, "[msgUserName!=STR]"));
+               asn1_print(ndo, &elem);
                return;
        }
        length -= count;
         np += count;
 
-       printf("U=%.*s ", (int)elem.asnlen, elem.data.str);
+       ND_PRINT((ndo, "U=%.*s ", (int)elem.asnlen, elem.data.str));
 
        /* msgAuthenticationParameters (OCTET STRING) */
-       if ((count = asn1_parse(np, length, &elem)) < 0)
+       if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_STR) {
-               fputs("[msgAuthenticationParameters!=STR]", stdout);
-               asn1_print(&elem);
+               ND_PRINT((ndo, "[msgAuthenticationParameters!=STR]"));
+               asn1_print(ndo, &elem);
                return;
        }
        length -= count;
         np += count;
 
        /* msgPrivacyParameters (OCTET STRING) */
-       if ((count = asn1_parse(np, length, &elem)) < 0)
+       if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_STR) {
-               fputs("[msgPrivacyParameters!=STR]", stdout);
-               asn1_print(&elem);
+               ND_PRINT((ndo, "[msgPrivacyParameters!=STR]"));
+               asn1_print(ndo, &elem);
                return;
        }
        length -= count;
         np += count;
 
        if ((u_int)count < length)
-               printf("[%d extra after usm SEQ]", length - count);
+               ND_PRINT((ndo, "[%d extra after usm SEQ]", length - count));
 }
 
 /*
  * Decode SNMPv3 Message Header (SNMPv3)
  */
 static void
-v3msg_print(const u_char *np, u_int length)
+v3msg_print(netdissect_options *ndo,
+            const u_char *np, u_int length)
 {
        struct be elem;
        int count = 0;
@@ -1714,75 +1715,74 @@ v3msg_print(const u_char *np, u_int length)
        int xlength = length;
 
        /* Sequence */
-       if ((count = asn1_parse(np, length, &elem)) < 0)
+       if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_SEQ) {
-               fputs("[!message]", stdout);
-               asn1_print(&elem);
+               ND_PRINT((ndo, "[!message]"));
+               asn1_print(ndo, &elem);
                return;
        }
        length = elem.asnlen;
-       np = (u_char *)elem.data.raw;
+       np = (const u_char *)elem.data.raw;
 
-       if (vflag) {
-               fputs("{ ", stdout);
+       if (ndo->ndo_vflag) {
+               ND_PRINT((ndo, "{ "));
        }
 
        /* msgID (INTEGER) */
-       if ((count = asn1_parse(np, length, &elem)) < 0)
+       if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_INT) {
-               fputs("[msgID!=INT]", stdout);
-               asn1_print(&elem);
+               ND_PRINT((ndo, "[msgID!=INT]"));
+               asn1_print(ndo, &elem);
                return;
        }
        length -= count;
        np += count;
 
        /* msgMaxSize (INTEGER) */
-       if ((count = asn1_parse(np, length, &elem)) < 0)
+       if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_INT) {
-               fputs("[msgMaxSize!=INT]", stdout);
-               asn1_print(&elem);
+               ND_PRINT((ndo, "[msgMaxSize!=INT]"));
+               asn1_print(ndo, &elem);
                return;
        }
        length -= count;
        np += count;
 
        /* msgFlags (OCTET STRING) */
-       if ((count = asn1_parse(np, length, &elem)) < 0)
+       if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_STR) {
-               fputs("[msgFlags!=STR]", stdout);
-               asn1_print(&elem);
+               ND_PRINT((ndo, "[msgFlags!=STR]"));
+               asn1_print(ndo, &elem);
                return;
        }
        if (elem.asnlen != 1) {
-               printf("[msgFlags size %d]", elem.asnlen);
+               ND_PRINT((ndo, "[msgFlags size %d]", elem.asnlen));
                return;
        }
        flags = elem.data.str[0];
        if (flags != 0x00 && flags != 0x01 && flags != 0x03
            && flags != 0x04 && flags != 0x05 && flags != 0x07) {
-               printf("[msgFlags=0x%02X]", flags);
+               ND_PRINT((ndo, "[msgFlags=0x%02X]", flags));
                return;
        }
        length -= count;
        np += count;
 
-       fputs("F=", stdout);
-       if (flags & 0x01) fputs("a", stdout);
-       if (flags & 0x02) fputs("p", stdout);
-       if (flags & 0x04) fputs("r", stdout);
-       fputs(" ", stdout);
+       ND_PRINT((ndo, "F=%s%s%s ",
+                 flags & 0x01 ? "a" : "",
+                 flags & 0x02 ? "p" : "",
+                 flags & 0x04 ? "r" : ""));
 
        /* msgSecurityModel (INTEGER) */
-       if ((count = asn1_parse(np, length, &elem)) < 0)
+       if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_INT) {
-               fputs("[msgSecurityModel!=INT]", stdout);
-               asn1_print(&elem);
+               ND_PRINT((ndo, "[msgSecurityModel!=INT]"));
+               asn1_print(ndo, &elem);
                return;
        }
        model = elem.data.integer;
@@ -1790,18 +1790,18 @@ v3msg_print(const u_char *np, u_int length)
        np += count;
 
        if ((u_int)count < length)
-               printf("[%d extra after message SEQ]", length - count);
+               ND_PRINT((ndo, "[%d extra after message SEQ]", length - count));
 
-       if (vflag) {
-               fputs("} ", stdout);
+       if (ndo->ndo_vflag) {
+               ND_PRINT((ndo, "} "));
        }
 
        if (model == 3) {
-           if (vflag) {
-               fputs("{ USM ", stdout);
+           if (ndo->ndo_vflag) {
+               ND_PRINT((ndo, "{ USM "));
            }
        } else {
-           printf("[security model %d]", model);
+           ND_PRINT((ndo, "[security model %d]", model));
             return;
        }
 
@@ -1809,31 +1809,31 @@ v3msg_print(const u_char *np, u_int length)
        length = xlength - (np - xnp);
 
        /* msgSecurityParameters (OCTET STRING) */
-       if ((count = asn1_parse(np, length, &elem)) < 0)
+       if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_STR) {
-               fputs("[msgSecurityParameters!=STR]", stdout);
-               asn1_print(&elem);
+               ND_PRINT((ndo, "[msgSecurityParameters!=STR]"));
+               asn1_print(ndo, &elem);
                return;
        }
        length -= count;
        np += count;
 
        if (model == 3) {
-           usm_print(elem.data.str, elem.asnlen);
-           if (vflag) {
-               fputs("} ", stdout);
+           usm_print(ndo, elem.data.str, elem.asnlen);
+           if (ndo->ndo_vflag) {
+               ND_PRINT((ndo, "} "));
            }
        }
 
-       if (vflag) {
-           fputs("{ ScopedPDU ", stdout);
+       if (ndo->ndo_vflag) {
+           ND_PRINT((ndo, "{ ScopedPDU "));
        }
 
-       scopedpdu_print(np, length, 3);
+       scopedpdu_print(ndo, np, length, 3);
 
-       if (vflag) {
-               fputs("} ", stdout);
+       if (ndo->ndo_vflag) {
+               ND_PRINT((ndo, "} "));
        }
 }
 
@@ -1841,34 +1841,35 @@ v3msg_print(const u_char *np, u_int length)
  * Decode SNMP header and pass on to PDU printing routines
  */
 void
-snmp_print(const u_char *np, u_int length)
+snmp_print(netdissect_options *ndo,
+           const u_char *np, u_int length)
 {
        struct be elem;
        int count = 0;
        int version = 0;
 
-       putchar(' ');
+       ND_PRINT((ndo, " "));
 
        /* initial Sequence */
-       if ((count = asn1_parse(np, length, &elem)) < 0)
+       if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_SEQ) {
-               fputs("[!init SEQ]", stdout);
-               asn1_print(&elem);
+               ND_PRINT((ndo, "[!init SEQ]"));
+               asn1_print(ndo, &elem);
                return;
        }
        if ((u_int)count < length)
-               printf("[%d extra after iSEQ]", length - count);
+               ND_PRINT((ndo, "[%d extra after iSEQ]", length - count));
        /* descend */
        length = elem.asnlen;
-       np = (u_char *)elem.data.raw;
+       np = (const u_char *)elem.data.raw;
 
        /* Version (INTEGER) */
-       if ((count = asn1_parse(np, length, &elem)) < 0)
+       if ((count = asn1_parse(ndo, np, length, &elem)) < 0)
                return;
        if (elem.type != BE_INT) {
-               fputs("[version!=INT]", stdout);
-               asn1_print(&elem);
+               ND_PRINT((ndo, "[version!=INT]"));
+               asn1_print(ndo, &elem);
                return;
        }
 
@@ -1876,11 +1877,11 @@ snmp_print(const u_char *np, u_int length)
        case SNMP_VERSION_1:
        case SNMP_VERSION_2:
        case SNMP_VERSION_3:
-               if (vflag)
-                       printf("{ %s ", SnmpVersion[elem.data.integer]);
+               if (ndo->ndo_vflag)
+                       ND_PRINT((ndo, "{ %s ", SnmpVersion[elem.data.integer]));
                break;
        default:
-               printf("[version = %d]", elem.data.integer);
+               ND_PRINT((ndo, "[version = %d]", elem.data.integer));
                return;
        }
        version = elem.data.integer;
@@ -1890,17 +1891,17 @@ snmp_print(const u_char *np, u_int length)
        switch (version) {
        case SNMP_VERSION_1:
         case SNMP_VERSION_2:
-               community_print(np, length, version);
+               community_print(ndo, np, length, version);
                break;
        case SNMP_VERSION_3:
-               v3msg_print(np, length);
+               v3msg_print(ndo, np, length);
                break;
        default:
-               printf("[version = %d]", elem.data.integer);
+               ND_PRINT((ndo, "[version = %d]", elem.data.integer));
                break;
        }
 
-       if (vflag) {
-               fputs("} ", stdout);
+       if (ndo->ndo_vflag) {
+               ND_PRINT((ndo, "} "));
        }
 }