d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt#include <config.h>

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt#include <stdlib.h>

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt#include <isc/commandline.h>

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt#include <isc/entropy.h>

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt#include <isc/mem.h>

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt#include <isc/stdio.h>

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt#include <isc/string.h>

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt#include <isc/util.h>

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt#include <dns/db.h>

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt#include <dns/dbiterator.h>

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt#include <dns/dnssec.h>

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt#include <dns/fixedname.h>

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt#include <dns/journal.h>

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt#include <dns/keyvalues.h>

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt#include <dns/log.h>

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt#include <dns/master.h>

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt#include <dns/masterdump.h>

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt#include <dns/nxt.h>

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt#include <dns/rdata.h>

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt#include <dns/rdataset.h>

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt#include <dns/rdatasetiter.h>

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt#include <dns/rdatastruct.h>

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt#include <dns/rdatatype.h>

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt#include <dns/result.h>

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt#include <dns/secalg.h>

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt#include <dns/time.h>

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt

d46855caedd5cb101795707f6f467fa363ef1448Evan Hunt#include <dst/dst.h>

#include <dst/result.h>

#include "dnssectool.h"

const char *program = "dnssec-signzone";

int verbose;

#define BUFSIZE 2048

typedef struct signer_key_struct signer_key_t;

struct signer_key_struct {

dst_key_t *key;

isc_boolean_t isdefault;

ISC_LINK(signer_key_t) link;

};

static ISC_LIST(signer_key_t) keylist;

static isc_stdtime_t starttime = 0, endtime = 0, now;

static int cycle = -1;

static isc_boolean_t tryverify = ISC_FALSE;

static isc_mem_t *mctx = NULL;

static isc_entropy_t *ectx = NULL;

static dns_ttl_t zonettl;

static FILE *fp;

static const dns_master_style_t *masterstyle = &dns_master_style_explicitttl;

static inline void

set_bit(unsigned char *array, unsigned int index, unsigned int bit) {

unsigned int shift, mask;

shift = 7 - (index % 8);

mask = 1 << shift;

if (bit != 0)

array[index / 8] |= mask;

else

array[index / 8] &= (~mask & 0xFF);

}

static void

signwithkey(dns_name_t *name, dns_rdataset_t *rdataset, dns_rdata_t *rdata,

dst_key_t *key, isc_buffer_t *b)

{

isc_result_t result;

dns_rdata_init(rdata);

result = dns_dnssec_sign(name, rdataset, key, &starttime, &endtime,

mctx, b, rdata);

isc_entropy_stopcallbacksources(ectx);

if (result != ISC_R_SUCCESS)

fatal("key '%s/%s/%d' failed to sign data: %s",

nametostr(dst_key_name(key)), algtostr(dst_key_alg(key)),

dst_key_id(key), isc_result_totext(result));

if (tryverify) {

result = dns_dnssec_verify(name, rdataset, key,

ISC_TRUE, mctx, rdata);

if (result == ISC_R_SUCCESS)

vbprintf(3, "\tsignature verified\n");

else

vbprintf(3, "\tsignature failed to verify\n");

}

}

static inline isc_boolean_t

issigningkey(signer_key_t *key) {

return (key->isdefault);

}

static inline isc_boolean_t

iszonekey(signer_key_t *key, dns_db_t *db) {

return (ISC_TF(dns_name_equal(dst_key_name(key->key),

dns_db_origin(db)) &&

dst_key_iszonekey(key->key)));

}

static signer_key_t *

keythatsigned(dns_rdata_sig_t *sig) {

isc_result_t result;

dst_key_t *pubkey = NULL, *privkey = NULL;

signer_key_t *key;

key = ISC_LIST_HEAD(keylist);

while (key != NULL) {

if (sig->keyid == dst_key_id(key->key) &&

sig->algorithm == dst_key_alg(key->key) &&

dns_name_equal(&sig->signer, dst_key_name(key->key)))

return key;

key = ISC_LIST_NEXT(key, link);

}

result = dst_key_fromfile(&sig->signer, sig->keyid, sig->algorithm,

DST_TYPE_PUBLIC, NULL, mctx, &pubkey);

if (result != ISC_R_SUCCESS)

return (NULL);

key = isc_mem_get(mctx, sizeof(signer_key_t));

if (key == NULL)

fatal("out of memory");

result = dst_key_fromfile(&sig->signer, sig->keyid, sig->algorithm,

DST_TYPE_PRIVATE, NULL, mctx, &privkey);

if (result == ISC_R_SUCCESS) {

key->key = privkey;

dst_key_free(&pubkey);

}

else

key->key = pubkey;

key->isdefault = ISC_FALSE;

ISC_LIST_APPEND(keylist, key, link);

return key;

}

static isc_boolean_t

expecttofindkey(dns_name_t *name, dns_db_t *db, dns_dbversion_t *version) {

unsigned int options = DNS_DBFIND_NOWILD;

dns_fixedname_t fname;

isc_result_t result;

dns_fixedname_init(&fname);

result = dns_db_find(db, name, version, dns_rdatatype_key, options,

0, NULL, dns_fixedname_name(&fname), NULL, NULL);

switch (result) {

case ISC_R_SUCCESS:

case DNS_R_NXDOMAIN:

case DNS_R_NXRRSET:

return ISC_TRUE;

case DNS_R_DELEGATION:

case DNS_R_CNAME:

case DNS_R_DNAME:

return ISC_FALSE;

default:

fatal("failure looking for '%s KEY' in database: %s",

nametostr(name), isc_result_totext(result));

return ISC_FALSE; /* removes a warning */

}

}

static inline isc_boolean_t

setverifies(dns_name_t *name, dns_rdataset_t *set, signer_key_t *key,

dns_rdata_t *sig)

{

isc_result_t result;

result = dns_dnssec_verify(name, set, key->key, ISC_FALSE, mctx, sig);

return (ISC_TF(result == ISC_R_SUCCESS));

}

static void

signset(dns_db_t *db, dns_dbversion_t *version, dns_diff_t *diff,

dns_dbnode_t *node, dns_name_t *name, dns_rdataset_t *set)

{

dns_rdataset_t sigset;

dns_rdata_t sigrdata;

dns_rdata_sig_t sig;

signer_key_t *key;

isc_result_t result;

isc_boolean_t notsigned = ISC_TRUE, nosigs = ISC_FALSE;

isc_boolean_t wassignedby[256], nowsignedby[256];

dns_difftuple_t *tuple;

dns_ttl_t ttl;

int i;

ttl = ISC_MIN(set->ttl, endtime - starttime);

for (i = 0; i < 256; i++)

wassignedby[i] = nowsignedby[i] = ISC_FALSE;

dns_rdataset_init(&sigset);

result = dns_db_findrdataset(db, node, version, dns_rdatatype_sig,

set->type, 0, &sigset, NULL);

if (result == ISC_R_NOTFOUND) {

result = ISC_R_SUCCESS;

nosigs = ISC_TRUE;

}

if (result != ISC_R_SUCCESS)

fatal("failed while looking for '%s SIG %s': %s",

nametostr(name), typetostr(set->type),

isc_result_totext(result));

vbprintf(1, "%s/%s:\n", nametostr(name), typetostr(set->type));

if (nosigs)

result = ISC_R_NOMORE;

else

result = dns_rdataset_first(&sigset);

while (result == ISC_R_SUCCESS) {

isc_boolean_t expired, future;

isc_boolean_t keep = ISC_FALSE, resign = ISC_FALSE;

dns_rdataset_current(&sigset, &sigrdata);

result = dns_rdata_tostruct(&sigrdata, &sig, NULL);

check_result(result, "dns_rdata_tostruct");

expired = ISC_TF(now + cycle > sig.timeexpire);

future = ISC_TF(now < sig.timesigned);

key = keythatsigned(&sig);

if (sig.timesigned > sig.timeexpire) {

/* sig is dropped and not replaced */

vbprintf(2, "\tsig by %s dropped - "

"invalid validity period\n",

sigtostr(&sig));

} else if (key == NULL && !future &&

expecttofindkey(&sig.signer, db, version))

{

/* sig is dropped and not replaced */

vbprintf(2, "\tsig by %s dropped - "

"private key not found\n",

sigtostr(&sig));

} else if (key == NULL || future) {

vbprintf(2, "\tsig by %s %s - key not found\n",

expired ? "retained" : "dropped",

sigtostr(&sig));

if (!expired)

keep = ISC_TRUE;

} else if (issigningkey(key)) {

if (!expired && setverifies(name, set, key, &sigrdata))

{

vbprintf(2, "\tsig by %s retained\n",

sigtostr(&sig));

keep = ISC_TRUE;

wassignedby[sig.algorithm] = ISC_TRUE;

} else {

vbprintf(2, "\tsig by %s dropped - %s\n",

sigtostr(&sig),

expired ? "expired" :

"failed to verify");

wassignedby[sig.algorithm] = ISC_TRUE;

resign = ISC_TRUE;

}

} else if (iszonekey(key, db)) {

if (!expired && setverifies(name, set, key, &sigrdata))

{

vbprintf(2, "\tsig by %s retained\n",

sigtostr(&sig));

keep = ISC_TRUE;

wassignedby[sig.algorithm] = ISC_TRUE;

nowsignedby[sig.algorithm] = ISC_TRUE;

} else {

vbprintf(2, "\tsig by %s dropped - %s\n",

sigtostr(&sig),

expired ? "expired" :

"failed to verify");

wassignedby[sig.algorithm] = ISC_TRUE;

if (dst_key_isprivate(key->key))

resign = ISC_TRUE;

}

} else if (!expired) {

vbprintf(2, "\tsig by %s retained\n",

sigtostr(&sig));

keep = ISC_TRUE;

} else {

vbprintf(2, "\tsig by %s expired\n",

sigtostr(&sig));

}

if (keep)

nowsignedby[sig.algorithm] = ISC_TRUE;

else {

tuple = NULL;

result = dns_difftuple_create(mctx, DNS_DIFFOP_DEL,

name, 0, &sigrdata,

&tuple);

check_result(result, "dns_difftuple_create");

dns_diff_append(diff, &tuple);

}

if (resign) {

isc_buffer_t b;

dns_rdata_t trdata;

unsigned char array[BUFSIZE];

vbprintf(1, "\tresigning with key %s/%s/%d\n",

nametostr(dst_key_name(key->key)),

algtostr(dst_key_alg(key->key)),

dst_key_id(key->key));

isc_buffer_init(&b, array, sizeof(array));

signwithkey(name, set, &trdata, key->key, &b);

nowsignedby[sig.algorithm] = ISC_TRUE;

tuple = NULL;

result = dns_difftuple_create(mctx, DNS_DIFFOP_ADD,

name, ttl, &trdata,

&tuple);

check_result(result, "dns_difftuple_create");

dns_diff_append(diff, &tuple);

}

dns_rdata_freestruct(&sig);

result = dns_rdataset_next(&sigset);

}

if (result == ISC_R_NOMORE)

result = ISC_R_SUCCESS;

check_result(result, "dns_rdataset_first/next");

if (dns_rdataset_isassociated(&sigset))

dns_rdataset_disassociate(&sigset);

for (i = 0; i < 256; i++)

if (wassignedby[i]) {

notsigned = ISC_FALSE;

break;

}

key = ISC_LIST_HEAD(keylist);

while (key != NULL) {

unsigned int alg = dst_key_alg(key->key);

if (key->isdefault &&

(notsigned || (wassignedby[alg] && !nowsignedby[alg])))

{

isc_buffer_t b;

dns_rdata_t trdata;

unsigned char array[BUFSIZE];

vbprintf(1, "\tsigning with key %s/%s/%d\n",

nametostr(dst_key_name(key->key)),

algtostr(dst_key_alg(key->key)),

dst_key_id(key->key));

isc_buffer_init(&b, array, sizeof(array));

signwithkey(name, set, &trdata, key->key, &b);

tuple = NULL;

result = dns_difftuple_create(mctx, DNS_DIFFOP_ADD,

name, ttl, &trdata,

&tuple);

check_result(result, "dns_difftuple_create");

dns_diff_append(diff, &tuple);

}

key = ISC_LIST_NEXT(key, link);

}

}

static isc_boolean_t

hasnullkey(dns_rdataset_t *rdataset) {

isc_result_t result;

dns_rdata_t rdata;

isc_boolean_t found = ISC_FALSE;

result = dns_rdataset_first(rdataset);

while (result == ISC_R_SUCCESS) {

dst_key_t *key = NULL;

dns_rdataset_current(rdataset, &rdata);

result = dns_dnssec_keyfromrdata(dns_rootname,

&rdata, mctx, &key);

if (result != ISC_R_SUCCESS)

fatal("could not convert KEY into internal format");

if (dst_key_isnullkey(key))

found = ISC_TRUE;

dst_key_free(&key);

if (found == ISC_TRUE)

return (ISC_TRUE);

result = dns_rdataset_next(rdataset);

}

if (result != ISC_R_NOMORE)

fatal("failure looking for null keys");

return (ISC_FALSE);

}

static void

opendb(const char *prefix, dns_name_t *name, dns_rdataclass_t rdclass,

dns_db_t **db)

{

char filename[256];

isc_buffer_t b;

isc_result_t result;

isc_buffer_init(&b, filename, sizeof(filename));

isc_buffer_putstr(&b, prefix);

result = dns_name_totext(name, ISC_FALSE, &b);

check_result(result, "dns_name_totext()");

if (isc_buffer_availablelength(&b) == 0)

fatal("name '%s' is too long", nametostr(name));

isc_buffer_putuint8(&b, 0);

result = dns_db_create(mctx, "rbt", name, dns_dbtype_zone,

rdclass, 0, NULL, db);

check_result(result, "dns_db_create()");

result = dns_db_load(*db, filename);

if (result != ISC_R_SUCCESS)

dns_db_detach(db);

}

static void

importparentsig(dns_db_t *db, dns_diff_t *diff, dns_name_t *name,

dns_rdataset_t *set)

{

dns_db_t *newdb = NULL;

dns_dbnode_t *newnode = NULL;

dns_rdataset_t newset, sigset;

dns_rdata_t rdata, newrdata;

isc_result_t result;

dns_rdataset_init(&newset);

dns_rdataset_init(&sigset);

opendb("signedkey-", name, dns_db_class(db), &newdb);

if (newdb == NULL)

return;

result = dns_db_findnode(newdb, name, ISC_FALSE, &newnode);

if (result != ISC_R_SUCCESS)

goto failure;

result = dns_db_findrdataset(newdb, newnode, NULL, dns_rdatatype_key,

0, 0, &newset, &sigset);

if (result != ISC_R_SUCCESS)

goto failure;

if (!dns_rdataset_isassociated(&newset) ||

!dns_rdataset_isassociated(&sigset))

goto failure;

if (dns_rdataset_count(set) != dns_rdataset_count(&newset))

goto failure;

dns_rdata_init(&rdata);

dns_rdata_init(&newrdata);

result = dns_rdataset_first(set);

check_result(result, "dns_rdataset_first()");

for (; result == ISC_R_SUCCESS; result = dns_rdataset_next(set)) {

dns_rdataset_current(set, &rdata);

result = dns_rdataset_first(&newset);

check_result(result, "dns_rdataset_first()");

for (;

result == ISC_R_SUCCESS;

result = dns_rdataset_next(&newset))

{

dns_rdataset_current(&newset, &newrdata);

if (dns_rdata_compare(&rdata, &newrdata) == 0)

break;

}

if (result != ISC_R_SUCCESS)

break;

}

if (result != ISC_R_NOMORE)

goto failure;

vbprintf(2, "found the parent's signature of our zone key\n");

result = dns_rdataset_first(&sigset);

while (result == ISC_R_SUCCESS) {

dns_difftuple_t *tuple = NULL;

dns_rdataset_current(&sigset, &rdata);

result = dns_difftuple_create(mctx, DNS_DIFFOP_ADD, name,

sigset.ttl, &rdata, &tuple);

check_result(result, "dns_difftuple_create");

dns_diff_append(diff, &tuple);

result = dns_rdataset_next(&sigset);

}

failure:

if (dns_rdataset_isassociated(&newset))

dns_rdataset_disassociate(&newset);

if (dns_rdataset_isassociated(&sigset))

dns_rdataset_disassociate(&sigset);

if (newnode != NULL)

dns_db_detachnode(newdb, &newnode);

if (newdb != NULL)

dns_db_detach(&newdb);

}

static isc_boolean_t

haschildkey(dns_db_t *db, dns_name_t *name) {

dns_db_t *newdb = NULL;

dns_dbnode_t *newnode = NULL;

dns_rdataset_t set, sigset;

dns_rdata_t sigrdata;

isc_result_t result;

isc_boolean_t found = ISC_FALSE;

dns_rdata_sig_t sig;

signer_key_t *key;

dns_rdataset_init(&set);

dns_rdataset_init(&sigset);

opendb("signedkey-", name, dns_db_class(db), &newdb);

if (newdb == NULL)

return (ISC_FALSE);

result = dns_db_findnode(newdb, name, ISC_FALSE, &newnode);

if (result != ISC_R_SUCCESS)

goto failure;

result = dns_db_findrdataset(newdb, newnode, NULL, dns_rdatatype_key,

0, 0, &set, &sigset);

if (result != ISC_R_SUCCESS)

goto failure;

if (!dns_rdataset_isassociated(&set) ||

!dns_rdataset_isassociated(&sigset))

goto failure;

result = dns_rdataset_first(&sigset);

check_result(result, "dns_rdataset_first()");

dns_rdata_init(&sigrdata);

for (; result == ISC_R_SUCCESS; result = dns_rdataset_next(&sigset)) {

dns_rdataset_current(&sigset, &sigrdata);

result = dns_rdata_tostruct(&sigrdata, &sig, NULL);

if (result != ISC_R_SUCCESS)

goto failure;

key = keythatsigned(&sig);

dns_rdata_freestruct(&sig);

if (key == NULL)

goto failure;

result = dns_dnssec_verify(name, &set, key->key,

ISC_FALSE, mctx, &sigrdata);

if (result == ISC_R_SUCCESS) {

found = ISC_TRUE;

break;

}

}

failure:

if (dns_rdataset_isassociated(&set))

dns_rdataset_disassociate(&set);

if (dns_rdataset_isassociated(&sigset))

dns_rdataset_disassociate(&sigset);

if (newnode != NULL)

dns_db_detachnode(newdb, &newnode);

if (newdb != NULL)

dns_db_detach(&newdb);

return (found);

}

static void

nxt_setbit(dns_rdataset_t *rdataset, dns_rdatatype_t type) {

unsigned char *nxt_bits;

dns_name_t nxtname;

isc_region_t r, r2;

isc_result_t result;

dns_rdata_t rdata;

result = dns_rdataset_first(rdataset);

check_result(result, "dns_rdataset_first()");

dns_rdataset_current(rdataset, &rdata);

dns_rdata_toregion(&rdata, &r);

dns_name_init(&nxtname, NULL);

dns_name_fromregion(&nxtname, &r);

dns_name_toregion(&nxtname, &r2);

nxt_bits = r.base + r2.length;

set_bit(nxt_bits, type, 1);

}

static void

createnullkey(dns_db_t *db, dns_dbversion_t *version, dns_name_t *name) {

unsigned char keydata[4];

dns_rdata_t keyrdata;

dns_rdata_key_t key;

dns_diff_t diff;

dns_difftuple_t *tuple = NULL;

isc_buffer_t b;

isc_result_t result;

vbprintf(2, "adding null key at %s\n", nametostr(name));

key.common.rdclass = dns_db_class(db);

key.common.rdtype = dns_rdatatype_key;

ISC_LINK_INIT(&key.common, link);

key.mctx = NULL;

key.flags = DNS_KEYTYPE_NOKEY | DNS_KEYOWNER_ZONE;

key.protocol = DNS_KEYPROTO_DNSSEC;

key.algorithm = DNS_KEYALG_DSA;

key.datalen = 0;

key.data = NULL;

isc_buffer_init(&b, keydata, sizeof keydata);

result = dns_rdata_fromstruct(&keyrdata, dns_db_class(db),

dns_rdatatype_key, &key, &b);

if (result != ISC_R_SUCCESS)

fatal("failed to build null key");

dns_diff_init(mctx, &diff);

result = dns_difftuple_create(mctx, DNS_DIFFOP_ADD, name, zonettl,

&keyrdata, &tuple);

check_result(result, "dns_difftuple_create");

dns_diff_append(&diff, &tuple);

result = dns_diff_apply(&diff, db, version);

check_result(result, "dns_diff_apply");

dns_diff_clear(&diff);

}

static void

signname(dns_db_t *db, dns_dbversion_t *version, dns_dbnode_t *node,

dns_name_t *name)

{

isc_result_t result;

dns_rdataset_t rdataset;

dns_rdatasetiter_t *rdsiter;

isc_boolean_t isdelegation = ISC_FALSE;

isc_boolean_t childkey = ISC_FALSE;

static int warnwild = 0;

isc_boolean_t atorigin;

isc_boolean_t neednullkey = ISC_FALSE;

dns_diff_t diff;

if (dns_name_iswildcard(name)) {

if (warnwild++ == 0) {

fprintf(stderr, "%s: warning: BIND 9 doesn't properly "

"handle wildcards in secure zones:\n",

program);

fprintf(stderr, "\t- wildcard nonexistence proof is "

"not generated by the server\n");

fprintf(stderr, "\t- wildcard nonexistence proof is "

"not required by the resolver\n");

}

fprintf(stderr, "%s: warning: wildcard name seen: %s\n",

program, nametostr(name));

}

atorigin = dns_name_equal(name, dns_db_origin(db));

/*

if (!atorigin) {

dns_rdataset_t nsset;

dns_rdataset_init(&nsset);

result = dns_db_findrdataset(db, node, version,

dns_rdatatype_ns, 0, 0, &nsset,

NULL);

/* Is this a delegation point? */

if (result == ISC_R_SUCCESS) {

isdelegation = ISC_TRUE;

dns_rdataset_disassociate(&nsset);

}

}

/*

if (isdelegation) {

dns_rdataset_t keyset;

childkey = haschildkey(db, name);

neednullkey = ISC_TRUE;

dns_rdataset_init(&keyset);

result = dns_db_findrdataset(db, node, version,

dns_rdatatype_key, 0, 0, &keyset,

NULL);

if (result == ISC_R_SUCCESS && childkey)

fatal("%s has both a signedkey file and KEY "

"records in the zone. Aborting.",

nametostr(name));

else if (result == ISC_R_SUCCESS) {

if (hasnullkey(&keyset))

neednullkey = ISC_FALSE;

dns_rdataset_disassociate(&keyset);

} else if (childkey) {

vbprintf(2, "child key for %s found\n",

nametostr(name));

neednullkey = ISC_FALSE;

}

if (neednullkey)

createnullkey(db, version, name);

}

/*

dns_diff_init(mctx, &diff);

dns_rdataset_init(&rdataset);

rdsiter = NULL;

result = dns_db_allrdatasets(db, node, version, 0, &rdsiter);

check_result(result, "dns_db_allrdatasets()");

result = dns_rdatasetiter_first(rdsiter);

while (result == ISC_R_SUCCESS) {

dns_rdatasetiter_current(rdsiter, &rdataset);

/* If this is a SIG set, skip it. */

if (rdataset.type == dns_rdatatype_sig)

goto skip;

/*

if (atorigin && rdataset.type == dns_rdatatype_key) {

importparentsig(db, &diff, name, &rdataset);

goto skip;

}

/*

if (isdelegation) {

if (!(rdataset.type == dns_rdatatype_nxt ||

(rdataset.type == dns_rdatatype_key &&

hasnullkey(&rdataset))))

goto skip;

}

if (rdataset.type == dns_rdatatype_nxt) {

nxt_setbit(&rdataset, dns_rdatatype_sig);

if (neednullkey)

nxt_setbit(&rdataset, dns_rdatatype_key);

}

signset(db, version, &diff, node, name, &rdataset);

skip:

dns_rdataset_disassociate(&rdataset);

result = dns_rdatasetiter_next(rdsiter);

}

if (result != ISC_R_NOMORE)

fatal("rdataset iteration for name '%s' failed: %s",

nametostr(name), isc_result_totext(result));

dns_rdatasetiter_destroy(&rdsiter);

result = dns_diff_apply(&diff, db, version);

if (result != ISC_R_SUCCESS)

fatal("failed to add SIGs at node %s", nametostr(name));

dns_diff_clear(&diff);

}

static inline isc_boolean_t

active_node(dns_db_t *db, dns_dbversion_t *version, dns_dbnode_t *node) {

dns_rdatasetiter_t *rdsiter;

isc_boolean_t active = ISC_FALSE;

isc_result_t result;

dns_rdataset_t rdataset;

dns_rdataset_init(&rdataset);

rdsiter = NULL;

result = dns_db_allrdatasets(db, node, version, 0, &rdsiter);

check_result(result, "dns_db_allrdatasets()");

result = dns_rdatasetiter_first(rdsiter);

while (result == ISC_R_SUCCESS) {

dns_rdatasetiter_current(rdsiter, &rdataset);

if (rdataset.type != dns_rdatatype_nxt)

active = ISC_TRUE;

dns_rdataset_disassociate(&rdataset);

if (!active)

result = dns_rdatasetiter_next(rdsiter);

else

result = ISC_R_NOMORE;

}

if (result != ISC_R_NOMORE)

fatal("rdataset iteration failed: %s",

isc_result_totext(result));

dns_rdatasetiter_destroy(&rdsiter);

if (!active) {

/*

result = dns_db_deleterdataset(db, node, version,

dns_rdatatype_nxt, 0);

if (result == DNS_R_UNCHANGED)

result = ISC_R_SUCCESS;

check_result(result, "dns_db_deleterdataset");

}

return (active);

}

static inline isc_result_t

next_active(dns_db_t *db, dns_dbversion_t *version, dns_dbiterator_t *dbiter,

dns_name_t *name, dns_dbnode_t **nodep)

{

isc_result_t result;

isc_boolean_t active;

do {

active = ISC_FALSE;

result = dns_dbiterator_current(dbiter, nodep, name);

if (result == ISC_R_SUCCESS) {

active = active_node(db, version, *nodep);

if (!active) {

dns_db_detachnode(db, nodep);

result = dns_dbiterator_next(dbiter);

}

}

} while (result == ISC_R_SUCCESS && !active);

return (result);

}

static inline isc_result_t

next_nonglue(dns_db_t *db, dns_dbversion_t *version, dns_dbiterator_t *dbiter,

dns_name_t *name, dns_dbnode_t **nodep, dns_name_t *origin,

dns_name_t *lastcut)

{

isc_result_t result, dresult;

do {

result = next_active(db, version, dbiter, name, nodep);

if (result == ISC_R_SUCCESS) {

if (dns_name_issubdomain(name, origin) &&

(lastcut == NULL ||

!dns_name_issubdomain(name, lastcut)))

return (ISC_R_SUCCESS);

dresult = dns_master_dumpnodetostream(mctx, db,

version,

*nodep, name,

masterstyle, fp);

check_result(dresult, "dns_master_dumpnodetostream");

dns_db_detachnode(db, nodep);

result = dns_dbiterator_next(dbiter);

}

} while (result == ISC_R_SUCCESS);

return (result);

}

static dns_ttl_t

minimumttl(dns_db_t *db, dns_dbversion_t *version) {

dns_rdataset_t soaset;

dns_name_t *origin;

dns_fixedname_t fname;

dns_name_t *name;

dns_rdata_t soarr;

dns_rdata_soa_t soa;

isc_result_t result;

dns_ttl_t ttl;

origin = dns_db_origin(db);

dns_fixedname_init(&fname);

name = dns_fixedname_name(&fname);

dns_rdataset_init(&soaset);

result = dns_db_find(db, origin, version, dns_rdatatype_soa,

0, 0, NULL, name, &soaset, NULL);

if (result != ISC_R_SUCCESS)

fatal("failed to find '%s SOA' in the zone: %s",

nametostr(name), isc_result_totext(result));

result = dns_rdataset_first(&soaset);

check_result(result, "dns_rdataset_first()");

dns_rdataset_current(&soaset, &soarr);

result = dns_rdata_tostruct(&soarr, &soa, NULL);

check_result(result, "dns_rdataset_tostruct()");

ttl = soa.minimum;

dns_rdata_freestruct(&soa);

dns_rdataset_disassociate(&soaset);

return (ttl);

}

static void

cleannode(dns_db_t *db, dns_dbversion_t *version, dns_dbnode_t *node) {

dns_rdatasetiter_t *rdsiter = NULL;

dns_rdataset_t set;

isc_result_t result, dresult;

dns_rdataset_init(&set);

result = dns_db_allrdatasets(db, node, version, 0, &rdsiter);

check_result(result, "dns_db_allrdatasets");

result = dns_rdatasetiter_first(rdsiter);

while (result == ISC_R_SUCCESS) {

isc_boolean_t destroy = ISC_FALSE;

dns_rdatatype_t covers = 0;

dns_rdatasetiter_current(rdsiter, &set);

if (set.type == dns_rdatatype_sig) {

covers = set.covers;

destroy = ISC_TRUE;

}

dns_rdataset_disassociate(&set);

result = dns_rdatasetiter_next(rdsiter);

if (destroy) {

dresult = dns_db_deleterdataset(db, node, version,

dns_rdatatype_sig,

covers);

check_result(dresult, "dns_db_allrdatasets");

}

}

if (result != ISC_R_NOMORE)

fatal("rdataset iteration failed: %s",

isc_result_totext(result));

dns_rdatasetiter_destroy(&rdsiter);

}

static void

signzone(dns_db_t *db, dns_dbversion_t *version) {

isc_result_t result, nxtresult, dresult;

dns_dbnode_t *node, *nextnode;

dns_fixedname_t fname, fnextname;

dns_name_t *name, *nextname, *target, *lastcut;

dns_dbiterator_t *dbiter;

dns_name_t *origin;

zonettl = minimumttl(db, version);

dns_fixedname_init(&fname);

name = dns_fixedname_name(&fname);

dns_fixedname_init(&fnextname);

nextname = dns_fixedname_name(&fnextname);

origin = dns_db_origin(db);

lastcut = NULL;

dbiter = NULL;

result = dns_db_createiterator(db, ISC_FALSE, &dbiter);

check_result(result, "dns_db_createiterator()");

result = dns_dbiterator_first(dbiter);

node = NULL;

dns_name_concatenate(origin, NULL, name, NULL);

result = next_nonglue(db, version, dbiter, name, &node, origin,

lastcut);

while (result == ISC_R_SUCCESS) {

nextnode = NULL;

if (!dns_name_equal(name, dns_db_origin(db))) {

dns_rdatasetiter_t *rdsiter = NULL;

dns_rdataset_t set;

dns_rdataset_init(&set);

result = dns_db_allrdatasets(db, node, version,

0, &rdsiter);

check_result(result, "dns_db_allrdatasets");

result = dns_rdatasetiter_first(rdsiter);

while (result == ISC_R_SUCCESS) {

dns_rdatasetiter_current(rdsiter, &set);

if (set.type == dns_rdatatype_ns) {

dns_rdataset_disassociate(&set);

break;

}

dns_rdataset_disassociate(&set);

result = dns_rdatasetiter_next(rdsiter);

}

if (result != ISC_R_SUCCESS && result != ISC_R_NOMORE)

fatal("rdataset iteration failed: %s",

isc_result_totext(result));

if (result == ISC_R_SUCCESS) {

if (lastcut != NULL)

dns_name_free(lastcut, mctx);

else {

lastcut = isc_mem_get(mctx,

sizeof(dns_name_t));

if (lastcut == NULL)

fatal("out of memory");

}

dns_name_init(lastcut, NULL);

result = dns_name_dup(name, mctx, lastcut);

check_result(result, "dns_name_dup()");

}

dns_rdatasetiter_destroy(&rdsiter);

}

result = dns_dbiterator_next(dbiter);

if (result == ISC_R_SUCCESS)

result = next_nonglue(db, version, dbiter, nextname,

&nextnode, origin, lastcut);

if (result == ISC_R_SUCCESS)

target = nextname;

else if (result == ISC_R_NOMORE)

target = origin;

else {

target = NULL; /* Make compiler happy. */

fatal("iterating through the database failed: %s",

isc_result_totext(result));

}

nxtresult = dns_buildnxt(db, version, node, target, zonettl);

check_result(nxtresult, "dns_buildnxt()");

signname(db, version, node, name);

dresult = dns_master_dumpnodetostream(mctx, db, version,

node, name,

masterstyle, fp);

check_result(dresult, "dns_master_dumpnodetostream");

cleannode(db, version, node);

dns_db_detachnode(db, &node);

node = nextnode;

dns_name_concatenate(nextname, NULL, name, NULL);

}

if (result != ISC_R_NOMORE)

fatal("iterating through the database failed: %s",

isc_result_totext(result));

if (lastcut != NULL) {

dns_name_free(lastcut, mctx);

isc_mem_put(mctx, lastcut, sizeof(dns_name_t));

}

dns_dbiterator_destroy(&dbiter);

}

static void

loadzone(char *file, char *origin, dns_db_t **db) {

isc_buffer_t b, b2;

unsigned char namedata[1024];

int len;

dns_name_t name;

isc_result_t result;

len = strlen(origin);

isc_buffer_init(&b, origin, len);

isc_buffer_add(&b, len);

isc_buffer_init(&b2, namedata, sizeof(namedata));

dns_name_init(&name, NULL);

result = dns_name_fromtext(&name, &b, dns_rootname, ISC_FALSE, &b2);

if (result != ISC_R_SUCCESS)

fatal("failed converting name '%s' to dns format: %s",

origin, isc_result_totext(result));

result = dns_db_create(mctx, "rbt", &name, dns_dbtype_zone,

dns_rdataclass_in, 0, NULL, db);

check_result(result, "dns_db_create()");

result = dns_db_load(*db, file);

if (result != ISC_R_SUCCESS)

fatal("failed loading zone from '%s': %s",

file, isc_result_totext(result));

}

static void

loadzonekeys(dns_db_t *db) {

dns_name_t *origin;

dns_dbnode_t *node;

dns_dbversion_t *currentversion;

isc_result_t result;

dst_key_t *keys[20];

unsigned int nkeys, i;

origin = dns_db_origin(db);

currentversion = NULL;

dns_db_currentversion(db, &currentversion);

node = NULL;

result = dns_db_findnode(db, origin, ISC_FALSE, &node);

if (result != ISC_R_SUCCESS)

fatal("failed to find the zone's origin: %s",

isc_result_totext(result));

result = dns_dnssec_findzonekeys(db, currentversion, node, origin, mctx,

20, keys, &nkeys);

if (result == ISC_R_NOTFOUND)

result = ISC_R_SUCCESS;

if (result != ISC_R_SUCCESS)

fatal("failed to find the zone keys: %s",

isc_result_totext(result));

for (i = 0; i < nkeys; i++) {

signer_key_t *key;

key = isc_mem_get(mctx, sizeof(signer_key_t));

if (key == NULL)

fatal("out of memory");

key->key = keys[i];

key->isdefault = ISC_FALSE;

ISC_LIST_APPEND(keylist, key, link);

}

dns_db_detachnode(db, &node);

dns_db_closeversion(db, &currentversion, ISC_FALSE);

}

static isc_stdtime_t

strtotime(char *str, isc_int64_t now, isc_int64_t base) {

isc_int64_t val, offset;

isc_result_t result;

char *endp;

if (str[0] == '+') {

offset = strtol(str + 1, &endp, 0);

if (*endp != '\0')

fatal("time value %s is invalid", str);

val = base + offset;

} else if (strncmp(str, "now+", 4) == 0) {

offset = strtol(str + 4, &endp, 0);

if (*endp != '\0')

fatal("time value %s is invalid", str);

val = now + offset;

} else {

result = dns_time64_fromtext(str, &val);

if (result != ISC_R_SUCCESS)

fatal("time %s must be numeric", str);

}

return ((isc_stdtime_t) val);

}

static void

usage(void) {

fprintf(stderr, "Usage:\n");

fprintf(stderr, "\t%s [options] zonefile [keys]\n", program);

fprintf(stderr, "\n");

fprintf(stderr, "Options: (default value in parenthesis) \n");

fprintf(stderr, "\t-s YYYYMMDDHHMMSS|+offset:\n");

fprintf(stderr, "\t\tSIG start time - absolute|offset (now)\n");

fprintf(stderr, "\t-e YYYYMMDDHHMMSS|+offset|\"now\"+offset]:\n");

fprintf(stderr, "\t\tSIG end time - absolute|from start|from now "

"(now + 30 days)\n");

fprintf(stderr, "\t-c ttl:\n");

fprintf(stderr, "\t\tcycle period - regenerate "

"if < cycle from end ( (end-start)/4 )\n");

fprintf(stderr, "\t-v level:\n");

fprintf(stderr, "\t\tverbose level (0)\n");

fprintf(stderr, "\t-o origin:\n");

fprintf(stderr, "\t\tzone origin (name of zonefile)\n");

fprintf(stderr, "\t-f outfile:\n");

fprintf(stderr, "\t\tfile the signed zone is written in "

"(zonefile + .signed)\n");

fprintf(stderr, "\t-a\n");

fprintf(stderr, "\t\tverify generated signatures\n");

fprintf(stderr, "\t-p\n");

fprintf(stderr, "\t\tuse pseudorandom data (faster but less secure)\n");

fprintf(stderr, "\t-r randomdev:\n");

fprintf(stderr, "\t\ta file containing random data\n");

fprintf(stderr, "\n");

fprintf(stderr, "Signing Keys: ");

fprintf(stderr, "(default: all zone keys that have private keys)\n");

fprintf(stderr, "\tkeyfile (Kname+alg+tag)\n");

exit(0);

}

main(int argc, char *argv[]) {

int i, ch;

char *startstr = NULL, *endstr = NULL;

char *origin = NULL, *file = NULL, *output = NULL;

char *randomfile = NULL;

char *endp;

dns_db_t *db;

dns_dbversion_t *version;

signer_key_t *key;

isc_result_t result;

isc_log_t *log = NULL;

isc_boolean_t pseudorandom = ISC_FALSE;

unsigned int eflags;

isc_boolean_t free_output = ISC_FALSE;

result = isc_mem_create(0, 0, &mctx);

if (result != ISC_R_SUCCESS)

fatal("out of memory");

dns_result_register();

while ((ch = isc_commandline_parse(argc, argv, "s:e:c:v:o:f:ahpr:"))

!= -1) {

switch (ch) {

case 's':

startstr = isc_commandline_argument;

break;

case 'e':

endstr = isc_commandline_argument;

break;

case 'c':

endp = NULL;

cycle = strtol(isc_commandline_argument, &endp, 0);

if (*endp != '\0' || cycle < 0)

fatal("cycle period must be numeric and "

"positive");

break;

case 'p':

pseudorandom = ISC_TRUE;

break;

case 'r':

randomfile = isc_commandline_argument;

break;

case 'v':

endp = NULL;

verbose = strtol(isc_commandline_argument, &endp, 0);

if (*endp != '\0')

fatal("verbose level must be numeric");

break;