/* * Portions Copyright (C) 2004-2008 Internet Systems Consortium, Inc. ("ISC") * Portions Copyright (C) 1999-2003 Internet Software Consortium. * Portions Copyright (C) 1995-2000 by Network Associates, Inc. * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND ISC AND NETWORK ASSOCIATES DISCLAIMS * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE * FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ /* $Id: dnssec-signzone.c,v 1.177.18.26 2008/06/02 23:46:01 tbox Exp $ */ /*! \file */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "dnssectool.h" const char *program = "dnssec-signzone"; int verbose; #define BUFSIZE 2048 #define MAXDSKEYS 8 typedef struct signer_key_struct signer_key_t; struct signer_key_struct { dst_key_t *key; isc_boolean_t issigningkey; isc_boolean_t isdsk; isc_boolean_t isksk; unsigned int position; ISC_LINK(signer_key_t) link; }; #define SIGNER_EVENTCLASS ISC_EVENTCLASS(0x4453) #define SIGNER_EVENT_WRITE (SIGNER_EVENTCLASS + 0) #define SIGNER_EVENT_WORK (SIGNER_EVENTCLASS + 1) #define SOA_SERIAL_KEEP 0 #define SOA_SERIAL_INCREMENT 1 #define SOA_SERIAL_UNIXTIME 2 typedef struct signer_event sevent_t; struct signer_event { ISC_EVENT_COMMON(sevent_t); dns_fixedname_t *fname; dns_dbnode_t *node; }; static ISC_LIST(signer_key_t) keylist; static unsigned int keycount = 0; static isc_stdtime_t starttime = 0, endtime = 0, now; static int cycle = -1; static int jitter = 0; static isc_boolean_t tryverify = ISC_FALSE; static isc_boolean_t printstats = ISC_FALSE; static isc_mem_t *mctx = NULL; static isc_entropy_t *ectx = NULL; static dns_ttl_t zonettl; static FILE *fp; static char *tempfile = NULL; static const dns_master_style_t *masterstyle; static dns_masterformat_t inputformat = dns_masterformat_text; static dns_masterformat_t outputformat = dns_masterformat_text; static unsigned int nsigned = 0, nretained = 0, ndropped = 0; static unsigned int nverified = 0, nverifyfailed = 0; static const char *directory; static isc_mutex_t namelock, statslock; static isc_taskmgr_t *taskmgr = NULL; static dns_db_t *gdb; /* The database */ static dns_dbversion_t *gversion; /* The database version */ static dns_dbiterator_t *gdbiter; /* The database iterator */ static dns_rdataclass_t gclass; /* The class */ static dns_name_t *gorigin; /* The database origin */ static isc_task_t *master = NULL; static unsigned int ntasks = 0; static isc_boolean_t shuttingdown = ISC_FALSE, finished = ISC_FALSE; static isc_boolean_t nokeys = ISC_FALSE; static isc_boolean_t removefile = ISC_FALSE; static isc_boolean_t generateds = ISC_FALSE; static isc_boolean_t ignoreksk = ISC_FALSE; static dns_name_t *dlv = NULL; static dns_fixedname_t dlv_fixed; static dns_master_style_t *dsstyle = NULL; static unsigned int serialformat = SOA_SERIAL_KEEP; #define INCSTAT(counter) \ if (printstats) { \ LOCK(&statslock); \ counter++; \ UNLOCK(&statslock); \ } static void sign(isc_task_t *task, isc_event_t *event); 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 dumpnode(dns_name_t *name, dns_dbnode_t *node) { isc_result_t result; if (outputformat != dns_masterformat_text) return; result = dns_master_dumpnodetostream(mctx, gdb, gversion, node, name, masterstyle, fp); check_result(result, "dns_master_dumpnodetostream"); } static signer_key_t * newkeystruct(dst_key_t *dstkey, isc_boolean_t signwithkey) { signer_key_t *key; key = isc_mem_get(mctx, sizeof(signer_key_t)); if (key == NULL) fatal("out of memory"); key->key = dstkey; if ((dst_key_flags(dstkey) & DNS_KEYFLAG_KSK) != 0) { key->issigningkey = signwithkey; key->isksk = ISC_TRUE; key->isdsk = ISC_FALSE; } else { key->issigningkey = signwithkey; key->isksk = ISC_FALSE; key->isdsk = ISC_TRUE; } key->position = keycount++; ISC_LINK_INIT(key, link); return (key); } 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; isc_stdtime_t jendtime; jendtime = (jitter != 0) ? isc_random_jitter(endtime, jitter) : endtime; result = dns_dnssec_sign(name, rdataset, key, &starttime, &jendtime, mctx, b, rdata); isc_entropy_stopcallbacksources(ectx); if (result != ISC_R_SUCCESS) { char keystr[KEY_FORMATSIZE]; key_format(key, keystr, sizeof(keystr)); fatal("dnskey '%s' failed to sign data: %s", keystr, isc_result_totext(result)); } INCSTAT(nsigned); if (tryverify) { result = dns_dnssec_verify(name, rdataset, key, ISC_TRUE, mctx, rdata); if (result == ISC_R_SUCCESS) { vbprintf(3, "\tsignature verified\n"); INCSTAT(nverified); } else { vbprintf(3, "\tsignature failed to verify\n"); INCSTAT(nverifyfailed); } } } static inline isc_boolean_t issigningkey(signer_key_t *key) { return (key->issigningkey); } static inline isc_boolean_t iszonekey(signer_key_t *key) { return (ISC_TF(dns_name_equal(dst_key_name(key->key), gorigin) && dst_key_iszonekey(key->key))); } /*% * Finds the key that generated a RRSIG, if possible. First look at the keys * that we've loaded already, and then see if there's a key on disk. */ static signer_key_t * keythatsigned(dns_rdata_rrsig_t *rrsig) { isc_result_t result; dst_key_t *pubkey = NULL, *privkey = NULL; signer_key_t *key; key = ISC_LIST_HEAD(keylist); while (key != NULL) { if (rrsig->keyid == dst_key_id(key->key) && rrsig->algorithm == dst_key_alg(key->key) && dns_name_equal(&rrsig->signer, dst_key_name(key->key))) return key; key = ISC_LIST_NEXT(key, link); } result = dst_key_fromfile(&rrsig->signer, rrsig->keyid, rrsig->algorithm, DST_TYPE_PUBLIC, NULL, mctx, &pubkey); if (result != ISC_R_SUCCESS) return (NULL); result = dst_key_fromfile(&rrsig->signer, rrsig->keyid, rrsig->algorithm, DST_TYPE_PUBLIC | DST_TYPE_PRIVATE, NULL, mctx, &privkey); if (result == ISC_R_SUCCESS) { dst_key_free(&pubkey); key = newkeystruct(privkey, ISC_FALSE); } else key = newkeystruct(pubkey, ISC_FALSE); ISC_LIST_APPEND(keylist, key, link); return (key); } /*% * Check to see if we expect to find a key at this name. If we see a RRSIG * and can't find the signing key that we expect to find, we drop the rrsig. * I'm not sure if this is completely correct, but it seems to work. */ static isc_boolean_t expecttofindkey(dns_name_t *name) { unsigned int options = DNS_DBFIND_NOWILD; dns_fixedname_t fname; isc_result_t result; char namestr[DNS_NAME_FORMATSIZE]; dns_fixedname_init(&fname); result = dns_db_find(gdb, name, gversion, dns_rdatatype_dnskey, 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); } dns_name_format(name, namestr, sizeof(namestr)); fatal("failure looking for '%s DNSKEY' in database: %s", namestr, 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 *rrsig) { isc_result_t result; result = dns_dnssec_verify(name, set, key->key, ISC_FALSE, mctx, rrsig); if (result == ISC_R_SUCCESS) { INCSTAT(nverified); return (ISC_TRUE); } else { INCSTAT(nverifyfailed); return (ISC_FALSE); } } /*% * Signs a set. Goes through contortions to decide if each RRSIG should * be dropped or retained, and then determines if any new SIGs need to * be generated. */ static void signset(dns_diff_t *del, dns_diff_t *add, dns_dbnode_t *node, dns_name_t *name, dns_rdataset_t *set) { dns_rdataset_t sigset; dns_rdata_t sigrdata = DNS_RDATA_INIT; dns_rdata_rrsig_t rrsig; signer_key_t *key; isc_result_t result; isc_boolean_t nosigs = ISC_FALSE; isc_boolean_t *wassignedby, *nowsignedby; int arraysize; dns_difftuple_t *tuple; dns_ttl_t ttl; int i; char namestr[DNS_NAME_FORMATSIZE]; char typestr[TYPE_FORMATSIZE]; char sigstr[SIG_FORMATSIZE]; dns_name_format(name, namestr, sizeof(namestr)); type_format(set->type, typestr, sizeof(typestr)); ttl = ISC_MIN(set->ttl, endtime - starttime); dns_rdataset_init(&sigset); result = dns_db_findrdataset(gdb, node, gversion, dns_rdatatype_rrsig, 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 RRSIG %s': %s", namestr, typestr, isc_result_totext(result)); vbprintf(1, "%s/%s:\n", namestr, typestr); arraysize = keycount; if (!nosigs) arraysize += dns_rdataset_count(&sigset); wassignedby = isc_mem_get(mctx, arraysize * sizeof(isc_boolean_t)); nowsignedby = isc_mem_get(mctx, arraysize * sizeof(isc_boolean_t)); if (wassignedby == NULL || nowsignedby == NULL) fatal("out of memory"); for (i = 0; i < arraysize; i++) wassignedby[i] = nowsignedby[i] = ISC_FALSE; 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, &rrsig, NULL); check_result(result, "dns_rdata_tostruct"); future = isc_serial_lt(now, rrsig.timesigned); key = keythatsigned(&rrsig); sig_format(&rrsig, sigstr, sizeof(sigstr)); if (key != NULL && issigningkey(key)) expired = isc_serial_gt(now + cycle, rrsig.timeexpire); else expired = isc_serial_gt(now, rrsig.timeexpire); if (isc_serial_gt(rrsig.timesigned, rrsig.timeexpire)) { /* rrsig is dropped and not replaced */ vbprintf(2, "\trrsig by %s dropped - " "invalid validity period\n", sigstr); } else if (key == NULL && !future && expecttofindkey(&rrsig.signer)) { /* rrsig is dropped and not replaced */ vbprintf(2, "\trrsig by %s dropped - " "private dnskey not found\n", sigstr); } else if (key == NULL || future) { vbprintf(2, "\trrsig by %s %s - dnskey not found\n", expired ? "retained" : "dropped", sigstr); if (!expired) keep = ISC_TRUE; } else if (issigningkey(key)) { if (!expired && setverifies(name, set, key, &sigrdata)) { vbprintf(2, "\trrsig by %s retained\n", sigstr); keep = ISC_TRUE; wassignedby[key->position] = ISC_TRUE; nowsignedby[key->position] = ISC_TRUE; } else { vbprintf(2, "\trrsig by %s dropped - %s\n", sigstr, expired ? "expired" : "failed to verify"); wassignedby[key->position] = ISC_TRUE; resign = ISC_TRUE; } } else if (iszonekey(key)) { if (!expired && setverifies(name, set, key, &sigrdata)) { vbprintf(2, "\trrsig by %s retained\n", sigstr); keep = ISC_TRUE; wassignedby[key->position] = ISC_TRUE; nowsignedby[key->position] = ISC_TRUE; } else { vbprintf(2, "\trrsig by %s dropped - %s\n", sigstr, expired ? "expired" : "failed to verify"); wassignedby[key->position] = ISC_TRUE; } } else if (!expired) { vbprintf(2, "\trrsig by %s retained\n", sigstr); keep = ISC_TRUE; } else { vbprintf(2, "\trrsig by %s expired\n", sigstr); } if (keep) { nowsignedby[key->position] = ISC_TRUE; INCSTAT(nretained); if (sigset.ttl != ttl) { vbprintf(2, "\tfixing ttl %s\n", sigstr); tuple = NULL; result = dns_difftuple_create(mctx, DNS_DIFFOP_DEL, name, sigset.ttl, &sigrdata, &tuple); check_result(result, "dns_difftuple_create"); dns_diff_append(del, &tuple); result = dns_difftuple_create(mctx, DNS_DIFFOP_ADD, name, ttl, &sigrdata, &tuple); check_result(result, "dns_difftuple_create"); dns_diff_append(add, &tuple); } } else { tuple = NULL; result = dns_difftuple_create(mctx, DNS_DIFFOP_DEL, name, sigset.ttl, &sigrdata, &tuple); check_result(result, "dns_difftuple_create"); dns_diff_append(del, &tuple); INCSTAT(ndropped); } if (resign) { isc_buffer_t b; dns_rdata_t trdata = DNS_RDATA_INIT; unsigned char array[BUFSIZE]; char keystr[KEY_FORMATSIZE]; INSIST(!keep); key_format(key->key, keystr, sizeof(keystr)); vbprintf(1, "\tresigning with dnskey %s\n", keystr); isc_buffer_init(&b, array, sizeof(array)); signwithkey(name, set, &trdata, key->key, &b); nowsignedby[key->position] = 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(add, &tuple); } dns_rdata_reset(&sigrdata); dns_rdata_freestruct(&rrsig); 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 (key = ISC_LIST_HEAD(keylist); key != NULL; key = ISC_LIST_NEXT(key, link)) { isc_buffer_t b; dns_rdata_t trdata; unsigned char array[BUFSIZE]; char keystr[KEY_FORMATSIZE]; if (nowsignedby[key->position]) continue; if (!key->issigningkey) continue; if (!(ignoreksk || key->isdsk || (key->isksk && set->type == dns_rdatatype_dnskey && dns_name_equal(name, gorigin)))) continue; key_format(key->key, keystr, sizeof(keystr)); vbprintf(1, "\tsigning with dnskey %s\n", keystr); dns_rdata_init(&trdata); 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(add, &tuple); } isc_mem_put(mctx, wassignedby, arraysize * sizeof(isc_boolean_t)); isc_mem_put(mctx, nowsignedby, arraysize * sizeof(isc_boolean_t)); } static void opendb(const char *prefix, dns_name_t *name, dns_rdataclass_t rdclass, dns_db_t **dbp) { char filename[256]; isc_buffer_t b; isc_result_t result; isc_buffer_init(&b, filename, sizeof(filename)); if (directory != NULL) { isc_buffer_putstr(&b, directory); if (directory[strlen(directory) - 1] != '/') isc_buffer_putstr(&b, "/"); } isc_buffer_putstr(&b, prefix); result = dns_name_tofilenametext(name, ISC_FALSE, &b); check_result(result, "dns_name_tofilenametext()"); if (isc_buffer_availablelength(&b) == 0) { char namestr[DNS_NAME_FORMATSIZE]; dns_name_format(name, namestr, sizeof(namestr)); fatal("name '%s' is too long", namestr); } isc_buffer_putuint8(&b, 0); result = dns_db_create(mctx, "rbt", dns_rootname, dns_dbtype_zone, rdclass, 0, NULL, dbp); check_result(result, "dns_db_create()"); result = dns_db_load(*dbp, filename); if (result != ISC_R_SUCCESS && result != DNS_R_SEENINCLUDE) dns_db_detach(dbp); } /*% * Loads the key set for a child zone, if there is one, and builds DS records. */ static isc_result_t loadds(dns_name_t *name, isc_uint32_t ttl, dns_rdataset_t *dsset) { dns_db_t *db = NULL; dns_dbversion_t *ver = NULL; dns_dbnode_t *node = NULL; isc_result_t result; dns_rdataset_t keyset; dns_rdata_t key, ds; unsigned char dsbuf[DNS_DS_BUFFERSIZE]; dns_diff_t diff; dns_difftuple_t *tuple = NULL; opendb("keyset-", name, gclass, &db); if (db == NULL) return (ISC_R_NOTFOUND); result = dns_db_findnode(db, name, ISC_FALSE, &node); if (result != ISC_R_SUCCESS) { dns_db_detach(&db); return (DNS_R_BADDB); } dns_rdataset_init(&keyset); result = dns_db_findrdataset(db, node, NULL, dns_rdatatype_dnskey, 0, 0, &keyset, NULL); if (result != ISC_R_SUCCESS) { dns_db_detachnode(db, &node); dns_db_detach(&db); return (result); } vbprintf(2, "found DNSKEY records\n"); result = dns_db_newversion(db, &ver); check_result(result, "dns_db_newversion"); dns_diff_init(mctx, &diff); for (result = dns_rdataset_first(&keyset); result == ISC_R_SUCCESS; result = dns_rdataset_next(&keyset)) { dns_rdata_init(&key); dns_rdata_init(&ds); dns_rdataset_current(&keyset, &key); result = dns_ds_buildrdata(name, &key, DNS_DSDIGEST_SHA1, dsbuf, &ds); check_result(result, "dns_ds_buildrdata"); result = dns_difftuple_create(mctx, DNS_DIFFOP_ADD, name, ttl, &ds, &tuple); check_result(result, "dns_difftuple_create"); dns_diff_append(&diff, &tuple); dns_rdata_reset(&ds); result = dns_ds_buildrdata(name, &key, DNS_DSDIGEST_SHA256, dsbuf, &ds); check_result(result, "dns_ds_buildrdata"); result = dns_difftuple_create(mctx, DNS_DIFFOP_ADD, name, ttl, &ds, &tuple); check_result(result, "dns_difftuple_create"); dns_diff_append(&diff, &tuple); } result = dns_diff_apply(&diff, db, ver); check_result(result, "dns_diff_apply"); dns_diff_clear(&diff); dns_db_closeversion(db, &ver, ISC_TRUE); result = dns_db_findrdataset(db, node, NULL, dns_rdatatype_ds, 0, 0, dsset, NULL); check_result(result, "dns_db_findrdataset"); dns_rdataset_disassociate(&keyset); dns_db_detachnode(db, &node); dns_db_detach(&db); return (result); } static isc_boolean_t nsec_setbit(dns_name_t *name, dns_rdataset_t *rdataset, dns_rdatatype_t type, unsigned int val) { isc_result_t result; dns_rdata_t rdata = DNS_RDATA_INIT; dns_rdata_nsec_t nsec; unsigned int newlen; unsigned char bitmap[8192 + 512]; unsigned char nsecdata[8192 + 512 + DNS_NAME_MAXWIRE]; isc_boolean_t answer = ISC_FALSE; unsigned int i, len, window; int octet; result = dns_rdataset_first(rdataset); check_result(result, "dns_rdataset_first()"); dns_rdataset_current(rdataset, &rdata); result = dns_rdata_tostruct(&rdata, &nsec, NULL); check_result(result, "dns_rdata_tostruct"); INSIST(nsec.len <= sizeof(bitmap)); newlen = 0; memset(bitmap, 0, sizeof(bitmap)); for (i = 0; i < nsec.len; i += len) { INSIST(i + 2 <= nsec.len); window = nsec.typebits[i]; len = nsec.typebits[i+1]; i += 2; INSIST(len > 0 && len <= 32); INSIST(i + len <= nsec.len); memmove(&bitmap[window * 32 + 512], &nsec.typebits[i], len); } set_bit(bitmap + 512, type, val); for (window = 0; window < 256; window++) { for (octet = 31; octet >= 0; octet--) if (bitmap[window * 32 + 512 + octet] != 0) break; if (octet < 0) continue; bitmap[newlen] = window; bitmap[newlen + 1] = octet + 1; newlen += 2; /* * Overlapping move. */ memmove(&bitmap[newlen], &bitmap[window * 32 + 512], octet + 1); newlen += octet + 1; } if (newlen != nsec.len || memcmp(nsec.typebits, bitmap, newlen) != 0) { dns_rdata_t newrdata = DNS_RDATA_INIT; isc_buffer_t b; dns_diff_t diff; dns_difftuple_t *tuple = NULL; dns_diff_init(mctx, &diff); result = dns_difftuple_create(mctx, DNS_DIFFOP_DEL, name, rdataset->ttl, &rdata, &tuple); check_result(result, "dns_difftuple_create"); dns_diff_append(&diff, &tuple); nsec.typebits = bitmap; nsec.len = newlen; isc_buffer_init(&b, nsecdata, sizeof(nsecdata)); result = dns_rdata_fromstruct(&newrdata, rdata.rdclass, dns_rdatatype_nsec, &nsec, &b); check_result(result, "dns_rdata_fromstruct"); result = dns_difftuple_create(mctx, DNS_DIFFOP_ADD, name, rdataset->ttl, &newrdata, &tuple); check_result(result, "dns_difftuple_create"); dns_diff_append(&diff, &tuple); result = dns_diff_apply(&diff, gdb, gversion); check_result(result, "dns_difftuple_apply"); dns_diff_clear(&diff); answer = ISC_TRUE; } dns_rdata_freestruct(&nsec); return (answer); } static isc_boolean_t delegation(dns_name_t *name, dns_dbnode_t *node, isc_uint32_t *ttlp) { dns_rdataset_t nsset; isc_result_t result; if (dns_name_equal(name, gorigin)) return (ISC_FALSE); dns_rdataset_init(&nsset); result = dns_db_findrdataset(gdb, node, gversion, dns_rdatatype_ns, 0, 0, &nsset, NULL); if (dns_rdataset_isassociated(&nsset)) { if (ttlp != NULL) *ttlp = nsset.ttl; dns_rdataset_disassociate(&nsset); } return (ISC_TF(result == ISC_R_SUCCESS)); } /*% * Signs all records at a name. This mostly just signs each set individually, * but also adds the RRSIG bit to any NSECs generated earlier, deals with * parent/child KEY signatures, and handles other exceptional cases. */ static void signname(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 hasds = ISC_FALSE; isc_boolean_t changed = ISC_FALSE; dns_diff_t del, add; char namestr[DNS_NAME_FORMATSIZE]; isc_uint32_t nsttl = 0; dns_name_format(name, namestr, sizeof(namestr)); /* * Determine if this is a delegation point. */ if (delegation(name, node, &nsttl)) isdelegation = ISC_TRUE; /* * If this is a delegation point, look for a DS set. */ if (isdelegation) { dns_rdataset_t dsset; dns_rdataset_t sigdsset; dns_rdataset_init(&dsset); dns_rdataset_init(&sigdsset); result = dns_db_findrdataset(gdb, node, gversion, dns_rdatatype_ds, 0, 0, &dsset, &sigdsset); if (result == ISC_R_SUCCESS) { dns_rdataset_disassociate(&dsset); if (generateds) { result = dns_db_deleterdataset(gdb, node, gversion, dns_rdatatype_ds, 0); check_result(result, "dns_db_deleterdataset"); } else hasds = ISC_TRUE; } if (generateds) { result = loadds(name, nsttl, &dsset); if (result == ISC_R_SUCCESS) { result = dns_db_addrdataset(gdb, node, gversion, 0, &dsset, 0, NULL); check_result(result, "dns_db_addrdataset"); hasds = ISC_TRUE; dns_rdataset_disassociate(&dsset); if (dns_rdataset_isassociated(&sigdsset)) dns_rdataset_disassociate(&sigdsset); } else if (dns_rdataset_isassociated(&sigdsset)) { result = dns_db_deleterdataset(gdb, node, gversion, dns_rdatatype_rrsig, dns_rdatatype_ds); check_result(result, "dns_db_deleterdataset"); dns_rdataset_disassociate(&sigdsset); } } else if (dns_rdataset_isassociated(&sigdsset)) dns_rdataset_disassociate(&sigdsset); } /* * Make sure that NSEC bits are appropriately set. */ dns_rdataset_init(&rdataset); RUNTIME_CHECK(dns_db_findrdataset(gdb, node, gversion, dns_rdatatype_nsec, 0, 0, &rdataset, NULL) == ISC_R_SUCCESS); if (!nokeys) changed = nsec_setbit(name, &rdataset, dns_rdatatype_rrsig, 1); if (changed) { dns_rdataset_disassociate(&rdataset); RUNTIME_CHECK(dns_db_findrdataset(gdb, node, gversion, dns_rdatatype_nsec, 0, 0, &rdataset, NULL) == ISC_R_SUCCESS); } if (hasds) (void)nsec_setbit(name, &rdataset, dns_rdatatype_ds, 1); else (void)nsec_setbit(name, &rdataset, dns_rdatatype_ds, 0); dns_rdataset_disassociate(&rdataset); /* * Now iterate through the rdatasets. */ dns_diff_init(mctx, &del); dns_diff_init(mctx, &add); rdsiter = NULL; result = dns_db_allrdatasets(gdb, node, gversion, 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 RRSIG set, skip it. */ if (rdataset.type == dns_rdatatype_rrsig) goto skip; /* * If this name is a delegation point, skip all records * except NSEC and DS sets. Otherwise check that there * isn't a DS record. */ if (isdelegation) { if (rdataset.type != dns_rdatatype_nsec && rdataset.type != dns_rdatatype_ds) goto skip; } else if (rdataset.type == dns_rdatatype_ds) { char namebuf[DNS_NAME_FORMATSIZE]; dns_name_format(name, namebuf, sizeof(namebuf)); fatal("'%s': found DS RRset without NS RRset\n", namebuf); } signset(&del, &add, 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", namestr, isc_result_totext(result)); dns_rdatasetiter_destroy(&rdsiter); result = dns_diff_applysilently(&del, gdb, gversion); if (result != ISC_R_SUCCESS) fatal("failed to delete SIGs at node '%s': %s", namestr, isc_result_totext(result)); result = dns_diff_applysilently(&add, gdb, gversion); if (result != ISC_R_SUCCESS) fatal("failed to add SIGs at node '%s': %s", namestr, isc_result_totext(result)); dns_diff_clear(&del); dns_diff_clear(&add); } static inline isc_boolean_t active_node(dns_dbnode_t *node) { dns_rdatasetiter_t *rdsiter = NULL; dns_rdatasetiter_t *rdsiter2 = NULL; isc_boolean_t active = ISC_FALSE; isc_result_t result; dns_rdataset_t rdataset; dns_rdatatype_t type; dns_rdatatype_t covers; isc_boolean_t found; dns_rdataset_init(&rdataset); result = dns_db_allrdatasets(gdb, node, gversion, 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_nsec && rdataset.type != dns_rdatatype_rrsig) 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)); if (!active) { /*% * The node is empty of everything but NSEC / RRSIG records. */ for (result = dns_rdatasetiter_first(rdsiter); result == ISC_R_SUCCESS; result = dns_rdatasetiter_next(rdsiter)) { dns_rdatasetiter_current(rdsiter, &rdataset); result = dns_db_deleterdataset(gdb, node, gversion, rdataset.type, rdataset.covers); check_result(result, "dns_db_deleterdataset()"); dns_rdataset_disassociate(&rdataset); } if (result != ISC_R_NOMORE) fatal("rdataset iteration failed: %s", isc_result_totext(result)); } else { /* * Delete RRSIGs for types that no longer exist. */ result = dns_db_allrdatasets(gdb, node, gversion, 0, &rdsiter2); check_result(result, "dns_db_allrdatasets()"); for (result = dns_rdatasetiter_first(rdsiter); result == ISC_R_SUCCESS; result = dns_rdatasetiter_next(rdsiter)) { dns_rdatasetiter_current(rdsiter, &rdataset); type = rdataset.type; covers = rdataset.covers; dns_rdataset_disassociate(&rdataset); if (type != dns_rdatatype_rrsig) continue; found = ISC_FALSE; for (result = dns_rdatasetiter_first(rdsiter2); !found && result == ISC_R_SUCCESS; result = dns_rdatasetiter_next(rdsiter2)) { dns_rdatasetiter_current(rdsiter2, &rdataset); if (rdataset.type == covers) found = ISC_TRUE; dns_rdataset_disassociate(&rdataset); } if (!found) { if (result != ISC_R_NOMORE) fatal("rdataset iteration failed: %s", isc_result_totext(result)); result = dns_db_deleterdataset(gdb, node, gversion, type, covers); check_result(result, "dns_db_deleterdataset(rrsig)"); } else if (result != ISC_R_NOMORE && result != ISC_R_SUCCESS) fatal("rdataset iteration failed: %s", isc_result_totext(result)); } if (result != ISC_R_NOMORE) fatal("rdataset iteration failed: %s", isc_result_totext(result)); dns_rdatasetiter_destroy(&rdsiter2); } dns_rdatasetiter_destroy(&rdsiter); return (active); } /*% * Extracts the TTL from the SOA. */ static dns_ttl_t soattl(void) { dns_rdataset_t soaset; dns_fixedname_t fname; dns_name_t *name; isc_result_t result; dns_ttl_t ttl; dns_rdata_t rdata = DNS_RDATA_INIT; dns_rdata_soa_t soa; dns_fixedname_init(&fname); name = dns_fixedname_name(&fname); dns_rdataset_init(&soaset); result = dns_db_find(gdb, gorigin, gversion, dns_rdatatype_soa, 0, 0, NULL, name, &soaset, NULL); if (result != ISC_R_SUCCESS) fatal("failed to find an SOA at the zone apex: %s", isc_result_totext(result)); result = dns_rdataset_first(&soaset); check_result(result, "dns_rdataset_first"); dns_rdataset_current(&soaset, &rdata); result = dns_rdata_tostruct(&rdata, &soa, NULL); check_result(result, "dns_rdata_tostruct"); ttl = soa.minimum; dns_rdataset_disassociate(&soaset); return (ttl); } /*% * Increment (or set if nonzero) the SOA serial */ static isc_result_t setsoaserial(isc_uint32_t serial) { isc_result_t result; dns_dbnode_t *node = NULL; dns_rdataset_t rdataset; dns_rdata_t rdata = DNS_RDATA_INIT; isc_uint32_t old_serial, new_serial; result = dns_db_getoriginnode(gdb, &node); if (result != ISC_R_SUCCESS) return result; dns_rdataset_init(&rdataset); result = dns_db_findrdataset(gdb, node, gversion, dns_rdatatype_soa, 0, 0, &rdataset, NULL); if (result != ISC_R_SUCCESS) goto cleanup; result = dns_rdataset_first(&rdataset); RUNTIME_CHECK(result == ISC_R_SUCCESS); dns_rdataset_current(&rdataset, &rdata); old_serial = dns_soa_getserial(&rdata); if (serial) { /* Set SOA serial to the value provided. */ new_serial = serial; } else { /* Increment SOA serial using RFC 1982 arithmetics */ new_serial = (old_serial + 1) & 0xFFFFFFFF; if (new_serial == 0) new_serial = 1; } /* If the new serial is not likely to cause a zone transfer * (a/ixfr) from servers having the old serial, warn the user. * * RFC1982 section 7 defines the maximum increment to be * (2^(32-1))-1. Using u_int32_t arithmetic, we can do a single * comparison. (5 - 6 == (2^32)-1, not negative-one) */ if (new_serial == old_serial || (new_serial - old_serial) > 0x7fffffffU) fprintf(stderr, "%s: warning: Serial number not advanced, " "zone may not transfer\n", program); dns_soa_setserial(new_serial, &rdata); result = dns_db_deleterdataset(gdb, node, gversion, dns_rdatatype_soa, 0); check_result(result, "dns_db_deleterdataset"); if (result != ISC_R_SUCCESS) goto cleanup; result = dns_db_addrdataset(gdb, node, gversion, 0, &rdataset, 0, NULL); check_result(result, "dns_db_addrdataset"); if (result != ISC_R_SUCCESS) goto cleanup; cleanup: dns_rdataset_disassociate(&rdataset); if (node != NULL) dns_db_detachnode(gdb, &node); dns_rdata_reset(&rdata); return (result); } /*% * Delete any RRSIG records at a node. */ 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; if (outputformat != dns_masterformat_text) return; 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_rrsig) { 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_rrsig, covers); check_result(dresult, "dns_db_deleterdataset"); } } if (result != ISC_R_NOMORE) fatal("rdataset iteration failed: %s", isc_result_totext(result)); dns_rdatasetiter_destroy(&rdsiter); } /*% * Set up the iterator and global state before starting the tasks. */ static void presign(void) { isc_result_t result; gdbiter = NULL; result = dns_db_createiterator(gdb, ISC_FALSE, &gdbiter); check_result(result, "dns_db_createiterator()"); result = dns_dbiterator_first(gdbiter); check_result(result, "dns_dbiterator_first()"); } /*% * Clean up the iterator and global state after the tasks complete. */ static void postsign(void) { dns_dbiterator_destroy(&gdbiter); } /*% * Sign the apex of the zone. */ static void signapex(void) { dns_dbnode_t *node = NULL; dns_fixedname_t fixed; dns_name_t *name; isc_result_t result; dns_fixedname_init(&fixed); name = dns_fixedname_name(&fixed); result = dns_dbiterator_current(gdbiter, &node, name); check_result(result, "dns_dbiterator_current()"); signname(node, name); dumpnode(name, node); cleannode(gdb, gversion, node); dns_db_detachnode(gdb, &node); result = dns_dbiterator_next(gdbiter); if (result == ISC_R_NOMORE) finished = ISC_TRUE; else if (result != ISC_R_SUCCESS) fatal("failure iterating database: %s", isc_result_totext(result)); } /*% * Assigns a node to a worker thread. This is protected by the master task's * lock. */ static void assignwork(isc_task_t *task, isc_task_t *worker) { dns_fixedname_t *fname; dns_name_t *name; dns_dbnode_t *node; sevent_t *sevent; dns_rdataset_t nsec; isc_boolean_t found; isc_result_t result; static unsigned int ended = 0; /* Protected by namelock. */ if (shuttingdown) return; LOCK(&namelock); if (finished) { ended++; if (ended == ntasks) { isc_task_detach(&task); isc_app_shutdown(); } goto unlock; } fname = isc_mem_get(mctx, sizeof(dns_fixedname_t)); if (fname == NULL) fatal("out of memory"); dns_fixedname_init(fname); name = dns_fixedname_name(fname); node = NULL; found = ISC_FALSE; while (!found) { result = dns_dbiterator_current(gdbiter, &node, name); if (result != ISC_R_SUCCESS) fatal("failure iterating database: %s", isc_result_totext(result)); dns_rdataset_init(&nsec); result = dns_db_findrdataset(gdb, node, gversion, dns_rdatatype_nsec, 0, 0, &nsec, NULL); if (result == ISC_R_SUCCESS) found = ISC_TRUE; else dumpnode(name, node); if (dns_rdataset_isassociated(&nsec)) dns_rdataset_disassociate(&nsec); if (!found) dns_db_detachnode(gdb, &node); result = dns_dbiterator_next(gdbiter); if (result == ISC_R_NOMORE) { finished = ISC_TRUE; break; } else if (result != ISC_R_SUCCESS) fatal("failure iterating database: %s", isc_result_totext(result)); } if (!found) { ended++; if (ended == ntasks) { isc_task_detach(&task); isc_app_shutdown(); } isc_mem_put(mctx, fname, sizeof(dns_fixedname_t)); goto unlock; } sevent = (sevent_t *) isc_event_allocate(mctx, task, SIGNER_EVENT_WORK, sign, NULL, sizeof(sevent_t)); if (sevent == NULL) fatal("failed to allocate event\n"); sevent->node = node; sevent->fname = fname; isc_task_send(worker, ISC_EVENT_PTR(&sevent)); unlock: UNLOCK(&namelock); } /*% * Start a worker task */ static void startworker(isc_task_t *task, isc_event_t *event) { isc_task_t *worker; worker = (isc_task_t *)event->ev_arg; assignwork(task, worker); isc_event_free(&event); } /*% * Write a node to the output file, and restart the worker task. */ static void writenode(isc_task_t *task, isc_event_t *event) { isc_task_t *worker; sevent_t *sevent = (sevent_t *)event; worker = (isc_task_t *)event->ev_sender; dumpnode(dns_fixedname_name(sevent->fname), sevent->node); cleannode(gdb, gversion, sevent->node); dns_db_detachnode(gdb, &sevent->node); isc_mem_put(mctx, sevent->fname, sizeof(dns_fixedname_t)); assignwork(task, worker); isc_event_free(&event); } /*% * Sign a database node. */ static void sign(isc_task_t *task, isc_event_t *event) { dns_fixedname_t *fname; dns_dbnode_t *node; sevent_t *sevent, *wevent; sevent = (sevent_t *)event; node = sevent->node; fname = sevent->fname; isc_event_free(&event); signname(node, dns_fixedname_name(fname)); wevent = (sevent_t *) isc_event_allocate(mctx, task, SIGNER_EVENT_WRITE, writenode, NULL, sizeof(sevent_t)); if (wevent == NULL) fatal("failed to allocate event\n"); wevent->node = node; wevent->fname = fname; isc_task_send(master, ISC_EVENT_PTR(&wevent)); } /*% * Generate NSEC records for the zone. */ static void nsecify(void) { dns_dbiterator_t *dbiter = NULL; dns_dbnode_t *node = NULL, *nextnode = NULL; dns_fixedname_t fname, fnextname, fzonecut; dns_name_t *name, *nextname, *zonecut; isc_boolean_t done = ISC_FALSE; isc_result_t result; dns_fixedname_init(&fname); name = dns_fixedname_name(&fname); dns_fixedname_init(&fnextname); nextname = dns_fixedname_name(&fnextname); dns_fixedname_init(&fzonecut); zonecut = NULL; result = dns_db_createiterator(gdb, ISC_FALSE, &dbiter); check_result(result, "dns_db_createiterator()"); result = dns_dbiterator_first(dbiter); check_result(result, "dns_dbiterator_first()"); while (!done) { dns_dbiterator_current(dbiter, &node, name); if (delegation(name, node, NULL)) { zonecut = dns_fixedname_name(&fzonecut); dns_name_copy(name, zonecut, NULL); } result = dns_dbiterator_next(dbiter); nextnode = NULL; while (result == ISC_R_SUCCESS) { isc_boolean_t active = ISC_FALSE; result = dns_dbiterator_current(dbiter, &nextnode, nextname); if (result != ISC_R_SUCCESS) break; active = active_node(nextnode); if (!active) { dns_db_detachnode(gdb, &nextnode); result = dns_dbiterator_next(dbiter); continue; } if (!dns_name_issubdomain(nextname, gorigin) || (zonecut != NULL && dns_name_issubdomain(nextname, zonecut))) { dns_db_detachnode(gdb, &nextnode); result = dns_dbiterator_next(dbiter); continue; } dns_db_detachnode(gdb, &nextnode); break; } if (result == ISC_R_NOMORE) { dns_name_clone(gorigin, nextname); done = ISC_TRUE; } else if (result != ISC_R_SUCCESS) fatal("iterating through the database failed: %s", isc_result_totext(result)); result = dns_nsec_build(gdb, gversion, node, nextname, zonettl); check_result(result, "dns_nsec_build()"); dns_db_detachnode(gdb, &node); } dns_dbiterator_destroy(&dbiter); } /*% * Load the zone file from disk */ static void loadzone(char *file, char *origin, dns_rdataclass_t rdclass, dns_db_t **db) { isc_buffer_t b; int len; dns_fixedname_t fname; dns_name_t *name; isc_result_t result; len = strlen(origin); isc_buffer_init(&b, origin, len); isc_buffer_add(&b, len); dns_fixedname_init(&fname); name = dns_fixedname_name(&fname); result = dns_name_fromtext(name, &b, dns_rootname, ISC_FALSE, NULL); 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, rdclass, 0, NULL, db); check_result(result, "dns_db_create()"); result = dns_db_load2(*db, file, inputformat); if (result != ISC_R_SUCCESS && result != DNS_R_SEENINCLUDE) fatal("failed loading zone from '%s': %s", file, isc_result_totext(result)); } /*% * Finds all public zone keys in the zone, and attempts to load the * private keys from disk. */ static void loadzonekeys(dns_db_t *db) { dns_dbnode_t *node; dns_dbversion_t *currentversion; isc_result_t result; dst_key_t *keys[20]; unsigned int nkeys, i; currentversion = NULL; dns_db_currentversion(db, ¤tversion); node = NULL; result = dns_db_findnode(db, gorigin, 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, gorigin, 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 = newkeystruct(keys[i], dst_key_isprivate(keys[i])); ISC_LIST_APPEND(keylist, key, link); } dns_db_detachnode(db, &node); dns_db_closeversion(db, ¤tversion, ISC_FALSE); } /*% * Finds all public zone keys in the zone. */ static void loadzonepubkeys(dns_db_t *db) { dns_dbversion_t *currentversion = NULL; dns_dbnode_t *node = NULL; dns_rdataset_t rdataset; dns_rdata_t rdata = DNS_RDATA_INIT; dst_key_t *pubkey; signer_key_t *key; isc_result_t result; dns_db_currentversion(db, ¤tversion); result = dns_db_findnode(db, gorigin, ISC_FALSE, &node); if (result != ISC_R_SUCCESS) fatal("failed to find the zone's origin: %s", isc_result_totext(result)); dns_rdataset_init(&rdataset); result = dns_db_findrdataset(db, node, currentversion, dns_rdatatype_dnskey, 0, 0, &rdataset, NULL); if (result != ISC_R_SUCCESS) fatal("failed to find keys at the zone apex: %s", isc_result_totext(result)); result = dns_rdataset_first(&rdataset); check_result(result, "dns_rdataset_first"); while (result == ISC_R_SUCCESS) { pubkey = NULL; dns_rdata_reset(&rdata); dns_rdataset_current(&rdataset, &rdata); result = dns_dnssec_keyfromrdata(gorigin, &rdata, mctx, &pubkey); if (result != ISC_R_SUCCESS) goto next; if (!dst_key_iszonekey(pubkey)) { dst_key_free(&pubkey); goto next; } key = newkeystruct(pubkey, ISC_FALSE); ISC_LIST_APPEND(keylist, key, link); next: result = dns_rdataset_next(&rdataset); } dns_rdataset_disassociate(&rdataset); dns_db_detachnode(db, &node); dns_db_closeversion(db, ¤tversion, ISC_FALSE); } static void warnifallksk(dns_db_t *db) { dns_dbversion_t *currentversion = NULL; dns_dbnode_t *node = NULL; dns_rdataset_t rdataset; dns_rdata_t rdata = DNS_RDATA_INIT; isc_result_t result; dns_rdata_key_t key; isc_boolean_t have_non_ksk = ISC_FALSE; dns_db_currentversion(db, ¤tversion); result = dns_db_findnode(db, gorigin, ISC_FALSE, &node); if (result != ISC_R_SUCCESS) fatal("failed to find the zone's origin: %s", isc_result_totext(result)); dns_rdataset_init(&rdataset); result = dns_db_findrdataset(db, node, currentversion, dns_rdatatype_dnskey, 0, 0, &rdataset, NULL); if (result != ISC_R_SUCCESS) fatal("failed to find keys at the zone apex: %s", isc_result_totext(result)); result = dns_rdataset_first(&rdataset); check_result(result, "dns_rdataset_first"); while (result == ISC_R_SUCCESS) { dns_rdata_reset(&rdata); dns_rdataset_current(&rdataset, &rdata); result = dns_rdata_tostruct(&rdata, &key, NULL); check_result(result, "dns_rdata_tostruct"); if ((key.flags & DNS_KEYFLAG_KSK) == 0) { have_non_ksk = ISC_TRUE; result = ISC_R_NOMORE; } else result = dns_rdataset_next(&rdataset); } dns_rdataset_disassociate(&rdataset); dns_db_detachnode(db, &node); dns_db_closeversion(db, ¤tversion, ISC_FALSE); if (!have_non_ksk && !ignoreksk) fprintf(stderr, "%s: warning: No non-KSK dnskey found. " "Supply non-KSK dnskey or use '-z'.\n", program); } static void writeset(const char *prefix, dns_rdatatype_t type) { char *filename; char namestr[DNS_NAME_FORMATSIZE]; dns_db_t *db = NULL; dns_dbversion_t *version = NULL; dns_diff_t diff; dns_difftuple_t *tuple = NULL; dns_fixedname_t fixed; dns_name_t *name; dns_rdata_t rdata, ds; isc_boolean_t have_ksk = ISC_FALSE; isc_boolean_t have_non_ksk = ISC_FALSE; isc_buffer_t b; isc_buffer_t namebuf; isc_region_t r; isc_result_t result; signer_key_t *key; unsigned char dsbuf[DNS_DS_BUFFERSIZE]; unsigned char keybuf[DST_KEY_MAXSIZE]; unsigned int filenamelen; const dns_master_style_t *style = (type == dns_rdatatype_dnskey) ? masterstyle : dsstyle; isc_buffer_init(&namebuf, namestr, sizeof(namestr)); result = dns_name_tofilenametext(gorigin, ISC_FALSE, &namebuf); check_result(result, "dns_name_tofilenametext"); isc_buffer_putuint8(&namebuf, 0); filenamelen = strlen(prefix) + strlen(namestr); if (directory != NULL) filenamelen += strlen(directory) + 1; filename = isc_mem_get(mctx, filenamelen + 1); if (filename == NULL) fatal("out of memory"); if (directory != NULL) sprintf(filename, "%s/", directory); else filename[0] = 0; strcat(filename, prefix); strcat(filename, namestr); dns_diff_init(mctx, &diff); for (key = ISC_LIST_HEAD(keylist); key != NULL; key = ISC_LIST_NEXT(key, link)) if (!key->isksk) { have_non_ksk = ISC_TRUE; break; } for (key = ISC_LIST_HEAD(keylist); key != NULL; key = ISC_LIST_NEXT(key, link)) if (key->isksk) { have_ksk = ISC_TRUE; break; } if (type == dns_rdatatype_dlv) { dns_name_t tname; unsigned int labels; dns_name_init(&tname, NULL); dns_fixedname_init(&fixed); name = dns_fixedname_name(&fixed); labels = dns_name_countlabels(gorigin); dns_name_getlabelsequence(gorigin, 0, labels - 1, &tname); result = dns_name_concatenate(&tname, dlv, name, NULL); check_result(result, "dns_name_concatenate"); } else name = gorigin; for (key = ISC_LIST_HEAD(keylist); key != NULL; key = ISC_LIST_NEXT(key, link)) { if (have_ksk && have_non_ksk && !key->isksk) continue; dns_rdata_init(&rdata); dns_rdata_init(&ds); isc_buffer_init(&b, keybuf, sizeof(keybuf)); result = dst_key_todns(key->key, &b); check_result(result, "dst_key_todns"); isc_buffer_usedregion(&b, &r); dns_rdata_fromregion(&rdata, gclass, dns_rdatatype_dnskey, &r); if (type != dns_rdatatype_dnskey) { result = dns_ds_buildrdata(gorigin, &rdata, DNS_DSDIGEST_SHA1, dsbuf, &ds); check_result(result, "dns_ds_buildrdata"); if (type == dns_rdatatype_dlv) ds.type = dns_rdatatype_dlv; result = dns_difftuple_create(mctx, DNS_DIFFOP_ADD, name, 0, &ds, &tuple); check_result(result, "dns_difftuple_create"); dns_diff_append(&diff, &tuple); dns_rdata_reset(&ds); result = dns_ds_buildrdata(gorigin, &rdata, DNS_DSDIGEST_SHA256, dsbuf, &ds); check_result(result, "dns_ds_buildrdata"); if (type == dns_rdatatype_dlv) ds.type = dns_rdatatype_dlv; result = dns_difftuple_create(mctx, DNS_DIFFOP_ADD, name, 0, &ds, &tuple); } else result = dns_difftuple_create(mctx, DNS_DIFFOP_ADD, gorigin, zonettl, &rdata, &tuple); check_result(result, "dns_difftuple_create"); dns_diff_append(&diff, &tuple); } result = dns_db_create(mctx, "rbt", dns_rootname, dns_dbtype_zone, gclass, 0, NULL, &db); check_result(result, "dns_db_create"); result = dns_db_newversion(db, &version); check_result(result, "dns_db_newversion"); result = dns_diff_apply(&diff, db, version); check_result(result, "dns_diff_apply"); dns_diff_clear(&diff); result = dns_master_dump(mctx, db, version, style, filename); check_result(result, "dns_master_dump"); isc_mem_put(mctx, filename, filenamelen + 1); dns_db_closeversion(db, &version, ISC_FALSE); dns_db_detach(&db); } static void print_time(FILE *fp) { time_t currenttime; if (outputformat != dns_masterformat_text) return; currenttime = time(NULL); fprintf(fp, "; File written on %s", ctime(¤ttime)); } static void print_version(FILE *fp) { if (outputformat != dns_masterformat_text) return; fprintf(fp, "; dnssec_signzone version " VERSION "\n"); } static void usage(void) { fprintf(stderr, "Usage:\n"); fprintf(stderr, "\t%s [options] zonefile [keys]\n", program); fprintf(stderr, "\n"); fprintf(stderr, "Version: %s\n", VERSION); fprintf(stderr, "Options: (default value in parenthesis) \n"); fprintf(stderr, "\t-c class (IN)\n"); fprintf(stderr, "\t-d directory\n"); fprintf(stderr, "\t\tdirectory to find keyset files (.)\n"); fprintf(stderr, "\t-g:\t"); fprintf(stderr, "generate DS records from keyset files\n"); fprintf(stderr, "\t-s [YYYYMMDDHHMMSS|+offset]:\n"); fprintf(stderr, "\t\tRRSIG start time - absolute|offset (now - 1 hour)\n"); fprintf(stderr, "\t-e [YYYYMMDDHHMMSS|+offset|\"now\"+offset]:\n"); fprintf(stderr, "\t\tRRSIG end time - absolute|from start|from now " "(now + 30 days)\n"); fprintf(stderr, "\t-i interval:\n"); fprintf(stderr, "\t\tcycle interval - resign " "if < interval from end ( (end-start)/4 )\n"); fprintf(stderr, "\t-j jitter:\n"); fprintf(stderr, "\t\trandomize signature end time up to jitter seconds\n"); fprintf(stderr, "\t-v debuglevel (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-I format:\n"); fprintf(stderr, "\t\tfile format of input zonefile (text)\n"); fprintf(stderr, "\t-O format:\n"); fprintf(stderr, "\t\tfile format of signed zone file (text)\n"); fprintf(stderr, "\t-N format:\n"); fprintf(stderr, "\t\tsoa serial format of signed zone file (keep)\n"); fprintf(stderr, "\t-r randomdev:\n"); fprintf(stderr, "\t\ta file containing random data\n"); fprintf(stderr, "\t-a:\t"); fprintf(stderr, "verify generated signatures\n"); fprintf(stderr, "\t-p:\t"); fprintf(stderr, "use pseudorandom data (faster but less secure)\n"); fprintf(stderr, "\t-t:\t"); fprintf(stderr, "print statistics\n"); fprintf(stderr, "\t-n ncpus (number of cpus present)\n"); fprintf(stderr, "\t-k key_signing_key\n"); fprintf(stderr, "\t-l lookasidezone\n"); fprintf(stderr, "\t-z:\t"); fprintf(stderr, "ignore KSK flag in DNSKEYs"); 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); } static void removetempfile(void) { if (removefile) isc_file_remove(tempfile); } static void print_stats(isc_time_t *timer_start, isc_time_t *timer_finish) { isc_uint64_t runtime_us; /* Runtime in microseconds */ isc_uint64_t runtime_ms; /* Runtime in milliseconds */ isc_uint64_t sig_ms; /* Signatures per millisecond */ runtime_us = isc_time_microdiff(timer_finish, timer_start); printf("Signatures generated: %10d\n", nsigned); printf("Signatures retained: %10d\n", nretained); printf("Signatures dropped: %10d\n", ndropped); printf("Signatures successfully verified: %10d\n", nverified); printf("Signatures unsuccessfully verified: %10d\n", nverifyfailed); runtime_ms = runtime_us / 1000; printf("Runtime in seconds: %7u.%03u\n", (unsigned int) (runtime_ms / 1000), (unsigned int) (runtime_ms % 1000)); if (runtime_us > 0) { sig_ms = ((isc_uint64_t)nsigned * 1000000000) / runtime_us; printf("Signatures per second: %7u.%03u\n", (unsigned int) sig_ms / 1000, (unsigned int) sig_ms % 1000); } } int main(int argc, char *argv[]) { int i, ch; char *startstr = NULL, *endstr = NULL, *classname = NULL; char *origin = NULL, *file = NULL, *output = NULL; char *inputformatstr = NULL, *outputformatstr = NULL; char *serialformatstr = NULL; char *dskeyfile[MAXDSKEYS]; int ndskeys = 0; char *endp; isc_time_t timer_start, timer_finish; 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; int tempfilelen; dns_rdataclass_t rdclass; isc_task_t **tasks = NULL; isc_buffer_t b; int len; masterstyle = &dns_master_style_explicitttl; check_result(isc_app_start(), "isc_app_start"); 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, "ac:d:e:f:ghi:I:j:k:l:n:N:o:O:pr:s:Stv:z")) != -1) { switch (ch) { case 'a': tryverify = ISC_TRUE; break; case 'c': classname = isc_commandline_argument; break; case 'd': directory = isc_commandline_argument; break; case 'e': endstr = isc_commandline_argument; break; case 'f': output = isc_commandline_argument; break; case 'g': generateds = ISC_TRUE; break; case 'h': default: usage(); break; case 'i': endp = NULL; cycle = strtol(isc_commandline_argument, &endp, 0); if (*endp != '\0' || cycle < 0) fatal("cycle period must be numeric and " "positive"); break; case 'I': inputformatstr = isc_commandline_argument; break; case 'j': endp = NULL; jitter = strtol(isc_commandline_argument, &endp, 0); if (*endp != '\0' || jitter < 0) fatal("jitter must be numeric and positive"); break; case 'l': dns_fixedname_init(&dlv_fixed); len = strlen(isc_commandline_argument); isc_buffer_init(&b, isc_commandline_argument, len); isc_buffer_add(&b, len); dns_fixedname_init(&dlv_fixed); dlv = dns_fixedname_name(&dlv_fixed); result = dns_name_fromtext(dlv, &b, dns_rootname, ISC_FALSE, NULL); check_result(result, "dns_name_fromtext(dlv)"); break; case 'k': if (ndskeys == MAXDSKEYS) fatal("too many key-signing keys specified"); dskeyfile[ndskeys++] = isc_commandline_argument; break; case 'n': endp = NULL; ntasks = strtol(isc_commandline_argument, &endp, 0); if (*endp != '\0' || ntasks > ISC_INT32_MAX) fatal("number of cpus must be numeric"); break; case 'N': serialformatstr = isc_commandline_argument; break; case 'o': origin = isc_commandline_argument; break; case 'O': outputformatstr = isc_commandline_argument; break; case 'p': pseudorandom = ISC_TRUE; break; case 'r': setup_entropy(mctx, isc_commandline_argument, &ectx); break; case 's': startstr = isc_commandline_argument; break; case 'S': /* This is intentionally undocumented */ /* -S: simple output style */ masterstyle = &dns_master_style_simple; break; case 't': printstats = ISC_TRUE; break; case 'v': endp = NULL; verbose = strtol(isc_commandline_argument, &endp, 0); if (*endp != '\0') fatal("verbose level must be numeric"); break; case 'z': ignoreksk = ISC_TRUE; break; } } if (ectx == NULL) setup_entropy(mctx, NULL, &ectx); eflags = ISC_ENTROPY_BLOCKING; if (!pseudorandom) eflags |= ISC_ENTROPY_GOODONLY; result = isc_hash_create(mctx, ectx, DNS_NAME_MAXWIRE); if (result != ISC_R_SUCCESS) fatal("could not create hash context"); result = dst_lib_init(mctx, ectx, eflags); if (result != ISC_R_SUCCESS) fatal("could not initialize dst"); isc_stdtime_get(&now); if (startstr != NULL) starttime = strtotime(startstr, now, now); else starttime = now - 3600; /* Allow for some clock skew. */ if (endstr != NULL) endtime = strtotime(endstr, now, starttime); else endtime = starttime + (30 * 24 * 60 * 60); if (cycle == -1) cycle = (endtime - starttime) / 4; if (ntasks == 0) ntasks = isc_os_ncpus(); vbprintf(4, "using %d cpus\n", ntasks); rdclass = strtoclass(classname); setup_logging(verbose, mctx, &log); argc -= isc_commandline_index; argv += isc_commandline_index; if (argc < 1) usage(); file = argv[0]; argc -= 1; argv += 1; if (origin == NULL) origin = file; if (output == NULL) { free_output = ISC_TRUE; output = isc_mem_allocate(mctx, strlen(file) + strlen(".signed") + 1); if (output == NULL) fatal("out of memory"); sprintf(output, "%s.signed", file); } if (inputformatstr != NULL) { if (strcasecmp(inputformatstr, "text") == 0) inputformat = dns_masterformat_text; else if (strcasecmp(inputformatstr, "raw") == 0) inputformat = dns_masterformat_raw; else fatal("unknown file format: %s\n", inputformatstr); } if (outputformatstr != NULL) { if (strcasecmp(outputformatstr, "text") == 0) outputformat = dns_masterformat_text; else if (strcasecmp(outputformatstr, "raw") == 0) outputformat = dns_masterformat_raw; else fatal("unknown file format: %s\n", outputformatstr); } if (serialformatstr != NULL) { if (strcasecmp(serialformatstr, "keep") == 0) serialformat = SOA_SERIAL_KEEP; else if (strcasecmp(serialformatstr, "increment") == 0 || strcasecmp(serialformatstr, "incr") == 0) serialformat = SOA_SERIAL_INCREMENT; else if (strcasecmp(serialformatstr, "unixtime") == 0) serialformat = SOA_SERIAL_UNIXTIME; else fatal("unknown soa serial format: %s\n", serialformatstr); } result = dns_master_stylecreate(&dsstyle, DNS_STYLEFLAG_NO_TTL, 0, 24, 0, 0, 0, 8, mctx); check_result(result, "dns_master_stylecreate"); gdb = NULL; TIME_NOW(&timer_start); loadzone(file, origin, rdclass, &gdb); gorigin = dns_db_origin(gdb); gclass = dns_db_class(gdb); zonettl = soattl(); ISC_LIST_INIT(keylist); if (argc == 0) { loadzonekeys(gdb); } else { for (i = 0; i < argc; i++) { dst_key_t *newkey = NULL; result = dst_key_fromnamedfile(argv[i], DST_TYPE_PUBLIC | DST_TYPE_PRIVATE, mctx, &newkey); if (result != ISC_R_SUCCESS) fatal("cannot load dnskey %s: %s", argv[i], isc_result_totext(result)); key = ISC_LIST_HEAD(keylist); while (key != NULL) { dst_key_t *dkey = key->key; if (dst_key_id(dkey) == dst_key_id(newkey) && dst_key_alg(dkey) == dst_key_alg(newkey) && dns_name_equal(dst_key_name(dkey), dst_key_name(newkey))) { if (!dst_key_isprivate(dkey)) fatal("cannot sign zone with " "non-private dnskey %s", argv[i]); break; } key = ISC_LIST_NEXT(key, link); } if (key == NULL) { key = newkeystruct(newkey, ISC_TRUE); ISC_LIST_APPEND(keylist, key, link); } else dst_key_free(&newkey); } loadzonepubkeys(gdb); } for (i = 0; i < ndskeys; i++) { dst_key_t *newkey = NULL; result = dst_key_fromnamedfile(dskeyfile[i], DST_TYPE_PUBLIC | DST_TYPE_PRIVATE, mctx, &newkey); if (result != ISC_R_SUCCESS) fatal("cannot load dnskey %s: %s", dskeyfile[i], isc_result_totext(result)); key = ISC_LIST_HEAD(keylist); while (key != NULL) { dst_key_t *dkey = key->key; if (dst_key_id(dkey) == dst_key_id(newkey) && dst_key_alg(dkey) == dst_key_alg(newkey) && dns_name_equal(dst_key_name(dkey), dst_key_name(newkey))) { /* Override key flags. */ key->issigningkey = ISC_TRUE; key->isksk = ISC_TRUE; key->isdsk = ISC_FALSE; dst_key_free(&dkey); key->key = newkey; break; } key = ISC_LIST_NEXT(key, link); } if (key == NULL) { /* Override dnskey flags. */ key = newkeystruct(newkey, ISC_TRUE); key->isksk = ISC_TRUE; key->isdsk = ISC_FALSE; ISC_LIST_APPEND(keylist, key, link); } } if (ISC_LIST_EMPTY(keylist)) { fprintf(stderr, "%s: warning: No keys specified or found\n", program); nokeys = ISC_TRUE; } warnifallksk(gdb); gversion = NULL; result = dns_db_newversion(gdb, &gversion); check_result(result, "dns_db_newversion()"); switch (serialformat) { case SOA_SERIAL_INCREMENT: setsoaserial(0); break; case SOA_SERIAL_UNIXTIME: setsoaserial(now); break; case SOA_SERIAL_KEEP: default: /* do nothing */ break; } nsecify(); if (!nokeys) { writeset("keyset-", dns_rdatatype_dnskey); writeset("dsset-", dns_rdatatype_ds); if (dlv != NULL) { writeset("dlvset-", dns_rdatatype_dlv); } } tempfilelen = strlen(output) + 20; tempfile = isc_mem_get(mctx, tempfilelen); if (tempfile == NULL) fatal("out of memory"); result = isc_file_mktemplate(output, tempfile, tempfilelen); check_result(result, "isc_file_mktemplate"); fp = NULL; result = isc_file_openunique(tempfile, &fp); if (result != ISC_R_SUCCESS) fatal("failed to open temporary output file: %s", isc_result_totext(result)); removefile = ISC_TRUE; setfatalcallback(&removetempfile); print_time(fp); print_version(fp); result = isc_taskmgr_create(mctx, ntasks, 0, &taskmgr); if (result != ISC_R_SUCCESS) fatal("failed to create task manager: %s", isc_result_totext(result)); master = NULL; result = isc_task_create(taskmgr, 0, &master); if (result != ISC_R_SUCCESS) fatal("failed to create task: %s", isc_result_totext(result)); tasks = isc_mem_get(mctx, ntasks * sizeof(isc_task_t *)); if (tasks == NULL) fatal("out of memory"); for (i = 0; i < (int)ntasks; i++) { tasks[i] = NULL; result = isc_task_create(taskmgr, 0, &tasks[i]); if (result != ISC_R_SUCCESS) fatal("failed to create task: %s", isc_result_totext(result)); } RUNTIME_CHECK(isc_mutex_init(&namelock) == ISC_R_SUCCESS); if (printstats) RUNTIME_CHECK(isc_mutex_init(&statslock) == ISC_R_SUCCESS); presign(); signapex(); if (!finished) { /* * There is more work to do. Spread it out over multiple * processors if possible. */ for (i = 0; i < (int)ntasks; i++) { result = isc_app_onrun(mctx, master, startworker, tasks[i]); if (result != ISC_R_SUCCESS) fatal("failed to start task: %s", isc_result_totext(result)); } (void)isc_app_run(); if (!finished) fatal("process aborted by user"); } else isc_task_detach(&master); shuttingdown = ISC_TRUE; for (i = 0; i < (int)ntasks; i++) isc_task_detach(&tasks[i]); isc_taskmgr_destroy(&taskmgr); isc_mem_put(mctx, tasks, ntasks * sizeof(isc_task_t *)); postsign(); if (outputformat != dns_masterformat_text) { result = dns_master_dumptostream2(mctx, gdb, gversion, masterstyle, outputformat, fp); check_result(result, "dns_master_dumptostream2"); } result = isc_stdio_close(fp); check_result(result, "isc_stdio_close"); removefile = ISC_FALSE; result = isc_file_rename(tempfile, output); if (result != ISC_R_SUCCESS) fatal("failed to rename temp file to %s: %s\n", output, isc_result_totext(result)); DESTROYLOCK(&namelock); if (printstats) DESTROYLOCK(&statslock); printf("%s\n", output); dns_db_closeversion(gdb, &gversion, ISC_FALSE); dns_db_detach(&gdb); while (!ISC_LIST_EMPTY(keylist)) { key = ISC_LIST_HEAD(keylist); ISC_LIST_UNLINK(keylist, key, link); dst_key_free(&key->key); isc_mem_put(mctx, key, sizeof(signer_key_t)); } isc_mem_put(mctx, tempfile, tempfilelen); if (free_output) isc_mem_free(mctx, output); dns_master_styledestroy(&dsstyle, mctx); cleanup_logging(&log); dst_lib_destroy(); isc_hash_destroy(); cleanup_entropy(&ectx); dns_name_destroy(); if (verbose > 10) isc_mem_stats(mctx, stdout); isc_mem_destroy(&mctx); (void) isc_app_finish(); if (printstats) { TIME_NOW(&timer_finish); print_stats(&timer_start, &timer_finish); } return (0); }